plz koi CS504 ki assig ka sol send kar day.
aj extend date hai .........
On 6/18/12, Umair Saulat <saulat.umair@googlemail.com> wrote:
> *CS614 - Data Warehousing*
>
> *Quiz No.4 June 18,2012*
>
>
>
>
>
> With data mining, the best way to accomplish this is by setting aside some
> of your data in a vault to isolate it from the mining process; once the
> mining is complete, the results can be tested against the isolated data to
> confirm the model's _______.
>
> *Validity** (Right Answer) *
>
> Security
>
> Integrity
>
> None of above
>
>
>
> The automated, prospective analyses offered by data mining move beyond the
> analyses of past events provided by _____________ tools typical of decision
> support systems.
>
> Introspective
>
> Intuitive
>
> Reminiscent
>
> *Retrospective** (Right Answer)*
>
>
>
> The technique that is used to perform these feats in data mining is called
> modeling, and this act of model building is something that people have been
> doing for a long time, certainly before the _________ of computers or data
> mining technology.
>
> Access
>
> Advent *(Right Answer)*
>
> Ascent
>
> Avowal
>
>
>
> Classification consists of examining the properties of a newly presented
> observation and assigning it to a predefined ____________.
>
> Object
>
> Container
>
> Subject
>
> Class *(Right Answer)*
>
>
>
> During business hours, most ______ systems should probably not use parallel
> execution.
>
> OLAP
>
> DSS
>
> Data Mining
>
> OLTP *(Right Answer)*
>
>
>
>
>
> In contrast to statistics, data mining is ______ driven.
>
> Assumption
>
> Knowledge *(Right Answer)*
>
> Human
>
> Database
>
>
>
>
>
>
>
> Data mining derives its name from the similarities between searching for
> valuable business information in a large database, for example, finding
> linked products in gigabytes of store scanner data, and mining a mountain
> for a _________ of valuable ore.
>
> Furrow
>
> Streak
>
> Trough
>
> Vein *(Right Answer)*
>
>
>
>
>
> As opposed to the outcome of classification, estimation deal with
> __________ valued outcome.
>
> Discrete *(Right Answer)*
>
> Isolated
>
> Continuous
>
> Distinct
>
>
>
> The goal of ideal parallel execution is to completely parallelize those
> parts of a computation that are not constrained by data dependencies. The
> smaller the portion of the program that must be executed __________, the
> greater the scalability of the computation.
>
> In Parallel
>
> Distributed
>
> Sequentially *(Right Answer)*
>
> None of above
>
>
>
>
>
> Data mining evolve as a mechanism to cater the limitations of ________
> systems to deal massive data sets with high dimensionality, new data types,
> multiple heterogeneous data resources etc.
>
> OLTP *(Right Answer)*
>
> OLAP
>
> DSS
>
> DWH
>
>
>
> The goal of ideal parallel execution is to completely parallelize those
> parts of a computation that are not constrained by data dependencies. The
> ______ the portion of the program that must be executed sequentially, the
> greater the scalability of the computation.
>
> Larger
>
> Smaller *(Right Answer)*
>
> Unambiguous
>
> Superior
>
>
>
> The goal of ___________ is to look at as few blocks as possible to find the
> matching records(s).
>
>
>
> Indexing *(Right Answer)*
>
> Partitioning
>
> Joining
>
> None of above
>
>
>
>
>
>
>
> In nested-loop join case, if there are 'M' rows in outer table and 'N' rows
> in inner table, time complexity is
>
> O (M log N)
>
> O (log MN)
>
> O (MN) *(Right Answer)*
>
> O (M + N)
>
>
>
>
>
> Data mining derives its name from the similarities between searching for
> valuable business information in a large database, for example, finding
> linked products in gigabytes of store scanner data, and mining a mountain
> for a _________ of valuable ore.
>
> Furrow
>
> Streak
>
> Trough
>
> Vein *(Right Answer)*
>
>
>
>
>
> The technique that is used to perform these feats in data mining is called
> modeling, and this act of model building is something that people have been
> doing for a long time, certainly before the _________ of computers or data
> mining technology.
>
> Access
>
> Advent *(Right Answer)*
>
> Ascent
>
> Avowal
>
>
>
> There are many variants of the traditional nested-loop join. If there is an
> index and that index is exploited, then it is called
>
> Naive nested-loop join
>
> Index nested-loop join *(Right Answer)*
>
> Temporary index nested-loop join
>
> None of these
>
>
>
> Data mining is a/an __________ approach, where browsing through data using
> data mining techniques may reveal something that might be of interest to
> the user as information that was unknown previously
>
> Non-Exploratory
>
> Exploratory *(Right Answer)*
>
> Computer Science
>
> None of these
>
>
>
> With data mining, the best way to accomplish this is by setting aside some
> of your data in a ________ to isolate it from the mining process; once the
> mining is complete, the results can be tested against the isolated data to
> confirm the model's validity.
>
> Cell
>
> Disk
>
> Folder
>
> Vault *(Right Answer)*
>
>
>
> The automated, prospective analyses offered by data mining move beyond the
> analyses of past events provided by _____________ tools typical of decision
> support systems.
>
> Introspective
>
> Intuitive
>
> Reminiscent
>
> Retrospective *(Right Answer)*
>
>
>
> There are many variants of the traditional nested-loop join. When the
> entire table is scanned it is called
>
> Index nested-loop join
>
> Naive nested-loop join *(Right Answer)*
>
> Temporary index nested-loop join
>
> None of these
>
>
>
> As opposed to the outcome of classification, estimation deal with
> __________ valued outcome.
>
> Discrete *(Right Answer)*
>
> Isolated
>
> Continuous
>
> Distinct
>
>
>
> Data mining evolve as a mechanism to cater the limitations of ________
> systems to deal massive data sets with high dimensionality, new data types,
> multiple heterogeneous data resources etc.
>
> OLTP *(Right Answer)*
>
> OLAP
>
> DSS
>
> DWH
>
>
>
> With data mining, the best way to accomplish this is by setting aside some
> of your data in a vault to isolate it from the mining process; once the
> mining is complete, the results can be tested against the isolated data to
> confirm the model's _______.
>
> Validity *(Right Answer)*
>
> Security
>
> Integrity
>
> None of these
>
>
>
>
>
>
>
> In contrast to statistics, data mining is ______ driven.
>
> Assumption
>
> Knowledge *(Right Answer)*
>
> Human
>
> Database
>
>
>
> The goal of ___________ is to look at as few blocks as possible to find the
> matching records(s).
>
> Indexing *(Right Answer)*
>
> Partitioning
>
> Joining
>
> None
>
>
>
> If every key in the data file is represented in the index file then index
> is
>
>
>
> Dense Index *(Right Answer)*
>
> Sparse Index
>
> Inverted Index
>
> None
>
>
>
> An optimized structure which is built primarily for retrieval, with update
> being only a secondary consideration is
>
>
>
> OLTP
>
> OLAP
>
> DSS
>
> inverted Index *(Right Answer)*
>
>
>
> Which of the following is not an "Orr's Law of Data Quality"?
>
>
>
> Data that is not used cannot be correct!"
>
> Data quality is a function of its use, not its co
>
> Data will be no better than its most stringent use!"
>
> Data duplication can be harmful for the organization!" *(Right Answer)*
>
>
>
> During business hours, most ______ systems should probably not use parallel
> execution.
>
> OLAP
>
> DSS
>
> Data Mining
>
> OLTP *(Right Answer)*
>
>
>
> _______________, if fits into memory, costs only one disk I/O access to
> locate a record by given key.
>
>
>
> An Inverted Index
>
> A Sparse Index
>
> A Dense Index *(Right Answer)*
>
> None of these
>
> _______________, if too big and does not fit into memory, will be expensive
> when used to find a record by given key.
>
>
>
> An Inverted Index
>
> A Sparse Index
>
> A Dense Index *(Right Answer)*
>
> None of these
>
>
>
> The goal of ideal parallel execution is to completely parallelize those
> parts of a computation that are not constrained by data dependencies. The
> smaller the portion of the program that must be executed __________, the
> greater the scalability of the computation.
>
> In Parallel
>
> Distributed
>
> Sequentially *(Right Answer)*
>
> None of these
>
>
>
> A dense index, if fits into memory, costs only ______ disk I/O access to
> locate a record by given key.
>
> One *(Right Answer)*
>
> Two
>
> Linear
>
> Quadratic
>
>
>
> Which of the following is not an activity of Data Quality Analysis Project?
>
>
>
> "Define"
>
> Measure"
>
> Analyze"
>
> "Compression" *(Right Answer)*
>
>
>
> The goal of ideal parallel execution is to completely parallelize those
> parts of a computation that are not constrained by data dependencies. The
> ______ the portion of the program that must be executed in parallel, the
> greater the scalability of the computation.
>
>
>
> Smaller *(Right Answer)*
>
> Larger
>
> Shorter
>
> None
>
>
>
>
>
> The automated, prospective analyses offered by data mining move beyond the
> analyses of past events provided by retrospective tools typical of
> ______________ .
>
> OLTP
>
> OLAP
>
> Decision Support Systems *(Right Answer)*
>
> None of these
>
>
>
> Data mining, the ________ of hidden predictive information from large
> databases, is a powerful new technology with great potential to help
> companies focus on the most important information in their data warehouses.
>
> Extraction *(Right Answer)*
>
> Insertion
>
> Inclusion
>
> Enclosure
>
>
>
>
>
> An optimized structure which is built primarily for retrieval, with update
> being only a secondary consideration is
> Select correct option:
> OLTP
> OLAP
> DSS
> Inverted Index *(Right Answer)*
>
> Question # 4 of 10 ( Start time: 10:33:23 PM ) Total Marks: 1
> If every key in the data file is represented in the index file then index
> is
> Select correct option:
> Dense Index *(Right Answer)*
> Sparse Index
> Inverted Index
> None of these
>
> Question # 5 of 10 ( Start time: 10:34:47 PM ) Total Marks: 1
> There are many variants of the traditional nested-loop join. If the index
> is built as part of the query plan and subsequently dropped, it is called
> Select correct option:
> Naive nested-loop join
> Index nested-loop join
> Temporary index nested-loop join *(Right Answer)*
> None of these
>
> Question # 6 of 10 ( Start time: 10:36:08 PM ) Total Marks: 1
> Data mining evolve as a mechanism to cater the limitations of ________
> systems to deal massive data sets with high dimensionality, new data types,
> multiple heterogeneous data resources etc.
> Select correct option:
> OLTP *(Right Answer)*
> OLAP
> DSS
> DWH
>
> Question # 7 of 10 ( Start time: 10:37:30 PM ) Total Marks: 1
> A dense index, if fits into memory, costs only ______ disk I/O access to
> locate a record by given key.
> Select correct option:
> One *(Right Answer)*
> Two
> Linear
> Quadratic
>
> Question # 8 of 10 ( Start time: 10:38:29 PM ) Total Marks: 1
> Data mining derives its name from the similarities between searching for
> valuable business information in a large database, for example, finding
> linked products in gigabytes of store scanner data, and mining a mountain
> for a _________ of valuable ore.
> Select correct option:
> Furrow
> Streak
> Trough
> Vein *(Right Answer)*
>
> The goal of ideal parallel execution is to completely parallelize those
> parts of a computation that are not constrained by data dependencies. The
> ______ the portion of the program that must be executed sequentially, the
> greater the scalability of the computation
>
> Larger
>
> Smaller *(Right Answer)*
>
> Unambiguous
>
> Superior
>
>
>
> _______________, if fits into memory, costs only one disk I/O access to
> locate a record by given key.
>
> An Inverted Index
>
> A Sparse Index
>
> A Dense Index *(Right Answer)*
>
> None of these
>
>
>
> If someone told you that he had a good model to predict customer usage, the
> first thing you might try would be to ask him to apply his model to your
> customer _______, where you already knew the answer.
>
> Base
>
> Drive
>
> File *(Right Answer)*
>
> Log
>
>
>
> The automated, prospective analyses offered by data mining move beyond the
> analyses of past events provided by _____________ tools typical of decision
> support systems.
>
> Introspective
>
> Intuitive
>
> Reminiscent
>
> Retrospective *(Right Answer)*
>
>
>
> If every key in the data file is represented in the index file then index
> is
>
> Dense Index *(Right Answer)*
>
> Sparse Index
>
> Inverted Index
>
> None of these
>
>
>
> A dense index, if fits into memory, costs only ______ disk I/O access to
> locate a record by given key.
>
> One *(Right Answer)*
>
> Two
>
> Linear
>
> Quadratic
>
>
>
> With data mining, the best way to accomplish this is by setting aside some
> of your data in a vault to isolate it from the mining process; once the
> mining is complete, the results can be tested against the isolated data to
> confirm the model's _______.
>
> Validity *(Right Answer)*
>
> Security
>
> Integrity
>
> None of these
>
>
>
> Data mining uses _________ algorithms to discover patterns and regularities
> in data.
>
> Mathematical
>
> Computational
>
> Statistical *(Right Answer)*
>
> None of these
>
>
>
> The goal of ___________ is to look at as few blocks as possible to find the
> matching records(s).
>
> Indexing *(Right Answer)*
>
> Partitioning
>
> Joining
>
> None of these
>
>
>
> _______________, if too big and does not fit into memory, will be expensive
> when used to find a record by given key.
>
> An Inverted Index
>
> A Sparse Index
>
> A Dense Index *(Right Answer)*
>
> None of these
>
>
>
>
>
> There are many variants of the traditional nested-loop join. If the index
> is built as part of the query plan and subsequently dropped, it is called
>
> Naive nested-loop join
>
> Index nested-loop join
>
> Temporary index nested-loop join *(Right Answer)*
>
>
>
> _______________, if fits into memory, costs only one disk I/O access to
> locate a record by given key.
>
> An Inverted Index
>
> A Sparse Index
>
> A Dense Index *(Right Answer)*
>
> None of these
>
> The goal of ideal parallel execution is to completely parallelize those
> parts of a computation that are not constrained by data dependencies. The
> smaller the portion of the program that must be executed __________, the
> greater the scalability of the computation.
>
> In Parallel
>
> Distributed
>
> Sequentially *(Right Answer)*
>
> None of these
>
>
>
>
>
> Data mining is a/an __________ approach, where browsing through data using
> data mining techniques may reveal something that might be of interest to
> the user as information that was unknown previously.
>
> Non-Exploratory
>
> Exploratory *(Right Answer)*
>
> Compute Science
>
> none of these
>
>
>
> Data mining evolve as mechanism to cater the limitations of _____ systems
> to deal massive data sets with high dimensionality , new data types,
> multiple heterogeneous data resources etc..
> OLTP *(Right Answer)*
>
> OLAP
>
> DSS
>
> DWH
>
>
>
> The goal of ideal parallel execution is to completely parallelize those
> parts of a computation that are not constrained by data dependencies. The
> smaller the portion of the program that must be executed __________, the
> greater the scalability of the computation.
> None of these
> Sequentially *(Right Answer)*
> In Parallel
> Distributed
>
>
>
> Data mining is a/an __________ approach, where browsing through data using
> data mining techniques may reveal something that might be of interest to
> the user as information that was unknown previously.
> Exploratory *(Right Answer)*
> Non-Exploratory
> Computer Science
>
> Data mining evolve as a mechanism to cater the limitations of ________
> systems to dealmassive data sets with high dimensionality, new data types,
> multiple heterogeneous data resources etc.
> OLTP *(Right Answer)*
> OLAP
> DSS
> DWH
>
>
>
> There are many variants of the traditional nested-loop join. If the index
> is built as part of the query plan and subsequently dropped, it is called
>
> Naive nested-loop join
>
> Index nested-loop join
>
> Temporary index nested-loop join *(Right Answer)*
>
> None of these
>
>
>
> Data mining derives its name from the similarities between searching for
> valuable business information in a large database, for example, finding
> linked products in gigabytes of store scanner data, and mining a mountain
> for a _________ of valuable ore.
>
> Furrow
>
> Streak
>
> Trough
>
> Vein *(Right Answer)*
>
>
>
> With data mining, the best way to accomplish this is by setting aside some
> of your data in a ________ to isolate it from the mining process; once the
> mining is complete, the results can be tested against the isolated data to
> confirm the model's validity.
>
> Cell
>
> Disk
>
> Folder
>
> Vault *(Right Answer)*
>
> The automated, prospective analyses offered by data mining move beyond the
> analysis of past
>
> events provided by respective tools typical of ___________.
>
> OLTP *(Right Answer)*
>
> OLAP
>
> Decision Support systems
>
> None of these
>
>
>
> There are many variants of the traditional nested-loop join, if there is an
> index is exploited, then it is called……
>
> Naïve nested loop join index
>
> Nested loop join temporary index *(Right Answer)*
>
> Index nested-loop joins
>
>
>
> Data mining uses _________ algorithms to discover patterns and regularities
> in data.
> Select correct option:
> Mathematical
> Computational
> Statistical *(Right Answer)*
> None of these
>
> Question # 2 of 10 ( Start time: 10:31:13 PM ) Total Marks: 1
> The goal of ___________ is to look at as few blocks as possible to find the
> matching records(s).
> Select correct option:
> Indexing *(Right Answer)*
> Partitioning
> Joining
> None of these
>
> Question # 3 of 10 ( Start time: 10:32:34 PM ) Total Marks: 1
> An optimized structure which is built primarily for retrieval, with update
> being only a secondary consideration is
> Select correct option:
> OLTP
> OLAP
> DSS
> Inverted Index *(Right Answer)*
>
> Question # 4 of 10 ( Start time: 10:33:23 PM ) Total Marks: 1
> If every key in the data file is represented in the index file then index
> is
> Select correct option:
> Dense Index *(Right Answer)*
> Sparse Index
> Inverted Index
> None of these
>
> Question # 5 of 10 ( Start time: 10:34:47 PM ) Total Marks: 1
> There are many variants of the traditional nested-loop join. If the index
> is built as part of the query plan and subsequently dropped, it is called
> Select correct option:
> Naive nested-loop join
> Index nested-loop join
> Temporary index nested-loop join *(Right Answer)*
> None of these
>
> Question # 6 of 10 ( Start time: 10:36:08 PM ) Total Marks: 1
> Data mining evolve as a mechanism to cater the limitations of ________
> systems to deal massive data sets with high dimensionality, new data types,
> multiple heterogeneous data resources etc.
> Select correct option:
> OLTP *(Right Answer)*
> OLAP
> DSS
> DWH
>
> Question # 7 of 10 ( Start time: 10:37:30 PM ) Total Marks: 1
> A dense index, if fits into memory, costs only ______ disk I/O access to
> locate a record by given key.
> Select correct option:
> One *(Right Answer)*
> Two
> Linear
> Quadratic
>
> Question # 8 of 10 ( Start time: 10:38:29 PM ) Total Marks: 1
> Data mining derives its name from the similarities between searching for
> valuable business information in a large database, for example, finding
> linked products in gigabytes of store scanner data, and mining a mountain
> for a _________ of valuable ore.
> Select correct option:
> Furrow
> Streak *(Right Answer)*
> Trough
> Vein
>
> Question # 9 of 10 ( Start time: 10:39:49 PM ) Total Marks: 1
> If 'M' rows from table-A match the conditions in the query then table-B is
> accessed 'M' times. Suppose table-B has an index on the join column. If 'a'
> I/Os are required to read the data block for each scan plus 'b' I/Os for
> each data block then the total cost of accessing table-B is _____________
> logical I/Os approximately.
> Select correct option:
> (a + b)M *(Right Answer)*
> (a - b)M
> (a + b + M)
> (a * b * M)
>
> Question # 10 of 10 ( Start time: 10:41:16 PM ) Total Marks: 1
> ________ is the technique in which existing heterogeneous segments are
> reshuffled, relocated into homogeneous segments.
> Select correct option:
> Clustering *(Right Answer)*
> Aggregation
> Segmentation
> Partitioning
>
>
>
>
>
> The goal of ideal parallel execution is to completely parallelize those
> parts of a computation that are not constrained by data dependencies. The
> ______ the portion of the program that must be executed sequentially, the
> greater the scalability of the computation
>
> Larger
>
> Smaller *(Right Answer)*
>
> Unambiguous
>
> Superior
>
>
>
> _______________, if fits into memory, costs only one disk I/O access to
> locate a record by given key.
>
> An Inverted Index
>
> A Sparse Index
>
> A Dense Index *(Right Answer)*
>
> None of these
>
>
>
> If someone told you that he had a good model to predict customer usage, the
> first thing you might try would be to ask him to apply his model to your
> customer _______, where you already knew the answer.
>
> Base
>
> Drive
>
> File *(Right Answer)*
>
> Log
>
>
>
> The automated, prospective analyses offered by data mining move beyond the
> analyses of past events provided by _____________ tools typical of decision
> support systems.
>
> Introspective
>
> Intuitive
>
> Reminiscent
>
> Retrospective *(Right Answer)*
>
>
>
> If every key in the data file is represented in the index file then index
> is
>
> Dense Index *(Right Answer)*
>
> Sparse Index
>
> Inverted Index
>
> None of these
>
>
>
> A dense index, if fits into memory, costs only ______ disk I/O access to
> locate a record by given key.
>
> One *(Right Answer)*
>
> Two
>
> Linear
>
> Quadratic
>
>
>
> With data mining, the best way to accomplish this is by setting aside some
> of your data in a vault to isolate it from the mining process; once the
> mining is complete, the results can be tested against the isolated data to
> confirm the model's _______.
>
> Validity *(Right Answer)*
>
> Security
>
> Integrity
>
> None of these
>
>
>
> Data mining uses _________ algorithms to discover patterns and regularities
> in data.
>
> Mathematical
>
> Computational
>
> Statistical *(Right Answer)*
>
> None of these
>
>
>
> The goal of ___________ is to look at as few blocks as possible to find the
> matching records(s).
>
> Indexing *(Right Answer)*
>
> Partitioning
>
> Joining
>
> None of these
>
>
>
> _______________, if too big and does not fit into memory, will be expensive
> when used to find a record by given key.
>
> An Inverted Index
>
> A Sparse Index
>
> A Dense Index *(Right Answer)*
>
> None of these
>
>
>
>
>
> There are many variants of the traditional nested-loop join. If the index
> is built as part of the query plan and subsequently dropped, it is called
>
> Naive nested-loop join
>
> Index nested-loop join
>
> Temporary index nested-loop join *(Right Answer)*
>
> None of these
>
>
>
> _______________, if fits into memory, costs only one disk I/O access to
> locate a record by given key.
>
> An Inverted Index
>
> A Sparse Index
>
> A Dense Index *(Right Answer)*
>
> None of these
>
>
>
>
>
> The goal of ideal parallel execution is to completely parallelize those
> parts of a computation that are not constrained by data dependencies. The
> smaller the portion of the program that must be executed __________, the
> greater the scalability of the computation.
>
> In Parallel
>
> Distributed
>
> Sequentially *(Right Answer)*
>
> None of these
>
>
>
>
>
> Data mining is a/an __________ approach, where browsing through data using
> data mining techniques may reveal something that might be of interest to
> the user as information that was unknown previously.
>
> Non-Exploratory
>
> Exploratory *(Right Answer)*
>
> Compute Science
>
> none of these
>
>
>
> Data mining evolve as mechanism to cater the limitations of _____ systems
> to deal massive data sets with high dimensionality , new data types,
> multiple heterogeneous data resources etc..
> OLTP *(Right Answer)*
>
> OLAP
>
> DSS
>
> DWH
>
>
>
> To identify the __________________ required we need to perform data
> profiling
> Degree of Transformation *(Right Answer)*
> Complexity
> Cost
> Time
>
>
> Execution can be completed successfully or it may be stopped due to some
> error. If some error occurs, execution will be terminated abnormally and
> all transactions will be ___________
> Committed to the database *(Right Answer)*
> Rolled back
>
> Companies collect and record their own operational data, but at the same
> time they also use reference data obtained from _______ sources such as
> codes, prices etc.
> Operational
> None of these
> Internal
> External *(Right Answer)*
>
>
>
>
> Ad-hoc access means to run such queries which are known already.
> True
> False *(Right Answer)*
>
>
>
>
> ____________ in agriculture extension is that pest population beyond which
> the benefit of spraying outweighs its cost.
> Profit Threshold Level
> Economic Threshold Level *(Right Answer)*
> Medicine Threshold Level
> None of these
>
>
> People that design and build the data warehouse must be capable of working
> across the organization at all levels
> True *(Right Answer)*
> False
>
> The _________ is only a small part in realizing the true business
> value buried within the mountain of data collected and stored within
> organizations business systems and operational databases.
> Independence on technology
> Dependence on technology *(Right Answer)*
> None of these
>
> Many data warehouse project teams waste enormous amounts of time searching
> in vain for a ___________________.
> Silver Bullet *(Right Answer)*
> Golden Bullet
> Suitable Hardware
> Compatible Product
>
>
>
> Multidimensional databases typically use proprietary __________ format to
> store pre-summarized cube structures.
> File *(Right Answer)*
> Application
> Aggregate
> Database
>
> A dense index, if fits into memory, costs only ______ disk I/O access to
> locate a record by given key.
> One *(Right Answer)*
> Two
> lg (n)
> n
>
> All data is ______________ of something real.
> I An Abstraction
> II A Representation
> Which of the following option is true?
> I Only *(Right Answer)*
> II Only
> Both I & II
> None of I & II
>
> The key idea behind ___________ is to take a big task and break it into
> subtasks that can be processed concurrently on a stream of data inputs in
> multiple, overlapping stages of execution.
> Pipeline Parallelism *(Right Answer)*
> Overlapped Parallelism
> Massive Parallelism
> Distributed Parallelism
>
> Non uniform distribution, when the data is distributed across the
> processors, is called ______.
> Skew in Partition *(Right Answer)*
> Pipeline Distribution
> Distributed Distribution
> Uncontrolled Distribution
>
> The goal of ideal parallel execution is to completely parallelize those
> parts of a computation that are not constrained by data dependencies. The
> smaller the portion of the program that must be executed __________, the
> greater the scalability of the computation.
> None of these
> Sequentially *(Right Answer)*
> In Parallel
> Distributed
>
>
>
> Data mining is a/an __________ approach, where browsing through data using
> data mining techniques may reveal something that might be of interest to
> the user as information that was unknown previously.
> Exploratory *(Right Answer)*
> Non-Exploratory
> Computer Science
>
> Data mining evolve as a mechanism to cater the limitations of ________
> systems to dealmassive data sets with high dimensionality, new data types,
> multiple heterogeneous data resources etc.
> OLTP *(Right Answer)*
> OLAP
> DSS
> DWH
>
> ________ is the technique in which existing heterogeneous segments are
> reshuffled, relocated into homogeneous segments.
> Clustering *(Right Answer)*
> Aggregation
> Segmentation
> Partitioning
>
> To measure or quantify the similarity or dissimilarity, different
> techniques are available. Which of the following option represent the name
> of available techniques?
> Pearson correlation is the only technique
> Euclidean distance is the only technique
> Both Pearson correlation and Euclidean distance *(Right Answer)*
> None of these
>
>
>
> For a DWH project, the key requirement are ________ and product experience.
> Tools
> Industry *(Right Answer)*
> Software
> None of these
>
> Pipeline parallelism focuses on increasing throughput of task execution,
> NOT on __________ sub-task execution time.
> Increasing
> Decreasing *(Right Answer)*
> Maintaining
> None of these
>
> Focusing on data warehouse delivery only often end up _________.
> Rebuilding *(Right Answer)*
> Success
> Good Stable Product
> None of these
>
> Pakistan is one of the five major ________ countries in the world.
> Cotton-growing *(Right Answer)*
> Rice-growing
> Weapon Producing
>
> _____________ is a process which involves gathering of information about
> column through execution of certain queries with intention to identify
> erroneous records.
> Data profiling *(Right Answer)*
> Data Anomaly Detection
> Record Duplicate Detection
> None of these
>
> Relational databases allow you to navigate the data in ____________ that
> is appropriate using the primary, foreign key structure within the data
> model.
> Only One Direction
> Any Direction *(Right Answer)*
> Two Direction
> None of these
>
> DSS queries do not involve a primary key
> True *(Right Answer)*
> False
>
> __________________ contributes to an under-utilization of valuable and
> expensive historical data, and inevitably results in a limited capability
> to provide decision support and analysis.
> The lack of data integration and standardization *(Right Answer)*
> Missing Data
> Data Stored in Heterogeneous Sources
>
>
>
>
>
> DTS allows us to connect through any data source or destination that is
> supported by ____________
> OLE DB *(Right Answer)*
> OLAP
> OLTP
> Data Warehouse
>
> Data Transformation Services (DTS) provide a set of _____ that lets you
> extract, transform, and consolidate data from disparate sources into single
> or multipledestinations supported by DTS connectivity.
> Tools *(Right Answer)*
> Documentations
> Guidelines
>
> If some error occurs, execution will be terminated abnormally and all
> transactions will be rolled back. In this case when we will access the
> database we will find it in the state that was before the ____________.
> Execution of package *(Right Answer)*
> Creation of package
> Connection of package
>
> To judge effectiveness we perform data profiling twice.
> One before Extraction and the other after Extraction
> One before Transformation and the other after Transformation *(Right
> Answer)
> *
> One before Loading and the other after Loading
>
> The need to synchronize data upon update is called
> Data Manipulation
> Data Replication
> Data Coherency *(Right Answer)*
> Data Imitation
>
> Taken jointly, the extract programs or naturally evolving systems formed a
> spider web, also known as
> Distributed Systems Architecture
> Legacy Systems Architecture *(Right Answer)*
> Online Systems Architecture
> Intranet Systems Architecture
>
>
>
> Node of a B-Tree is stored in memory block and traversing a B-Tree involves
> ______ page faults.
> O (n)
> O (n2)
> O (n lg n)
> O (lg n) *(Right Answer)*
> Which statement is true for De-Normalization?
> Redundant data is a performance liability at query time, but is a
> performance benefit at update time.
> Redundant data is a performance benefit at both query time and update time.
> Redundant data is a performance liability at both query time and update
> time.
> Redundant data is a performance benefit at query time, but is a performance
> liability at update time. *(Right Answer)*
>
> It is observed that every year the amount of data recorded in an
> organization is
>
> Doubles *(Right Answer)*
>
> Triples
>
> Quartiles
>
> Remains same as previous year
>
>
>
> Pre-computed _______ can solve performance problems
>
> Aggregates *(Right Answer)*
>
> Facts
>
> Dimensions
>
>
>
> The degree of similarity between two records, often measured by a numerical
> value between _______, usually depends on application characteristics.
>
> 0 and 1 *(Right Answer)*
>
> 0 and 10
>
> 0 and 100
>
> 0 and 99
>
> The purpose of the House of Quality technique is to reduce ______ types of
> risk.
>
> Two *(Right Answer)*
>
> Three
>
> Four
>
> All
>
> NUMA stands for __________
>
> Non-uniform Memory Access *(Right Answer)*
>
> Non-updateable Memory Architecture
>
> New Universal Memory Architecture
>
>
>
> There are many variants of the traditional nested-loop join. If the index
> is built as part of the query plan and subsequently dropped, it is called
>
> Naive nested-loop join
>
> Index nested-loop join
>
> Temporary index nested-loop join *(Right Answer)*
>
> None of these
>
> The Kimball s iterative data warehouse development approach drew on decades
> of experience to develop the _____________.
>
> Business Dimensional Lifecycle *(Right Answer)*
>
> Data Warehouse Dimension
>
> Business Definition Lifecycle
>
> OLAP Dimension
>
>
>
> For a smooth DWH implementation we must be a technologist.
>
> True
>
> False *(Right Answer)*
>
> During the application specification activity, we also must give
> consideration to the organization of the applications.
>
> True *(Right Answer)*
>
> False
>
>
>
> The most recent attack is the ________ attack on the cotton crop during
> 2003- 04, resulting in a loss of nearly 0.5 million bales.
>
> Boll Worm *(Right Answer)*
>
> Purple Worm
>
> Blue Worm
>
> Cotton Worm
>
>
>
> The users of data warehouse are knowledge workers in other words they
> are_________ in the organization.
>
> Decision maker *(Right Answer)*
>
> Manager
>
> Database Administrator
>
> DWH Analyst
>
>
>
> _________ breaks a table into multiple tables based upon common column
> values.
>
> Horizontal splitting *(Right Answer)*
>
> Vertical splitting
>
>
>
> As apposed to the out come of classification , estimation deal with
> ____________ valued
>
> outcome.
>
> Discrete
>
> Isolated
>
> Continuous *(Right Answer)*
>
> Distinct
>
>
>
>
>
>
>
>
>
> The goal of ______is to look at as few block as possible to find the
> matching records. Indexing
>
> Partitioning
>
> Joining
>
> none of these
>
> nested loop join *(Right Answer)*
>
> none of these
>
>
>
> The technique that is used to perform these feats in data mining modeling,
> and this act of model building is something that people have been doing for
> long time, certainly before the _______ of computers or data mining
> technology.
>
> Access Advent *(Right Answer)*
>
> Ascent Avowal
>
>
>
> A data warehouse may include
> Legacy systems *(Right Answer)*
> Only internal data sources
> Privacy restrictions
> Small data mart
>
> De-Normalization normally speeds up
> Data Retrieval *(Right Answer)*
> Data Modification
> Development Cycle
> Data Replication
>
> In horizontal splitting, we split a relation into multiple tables on the
> basis of
> Common Column Values *(Right Answer)*
> Common Row Values
> Different Index Values
> Value resulted by ad-hoc query
>
>
>
> For a given data set, to get a global view in un-supervised learning we use
> One-way Clustering *(Right Answer)*
> Bi-clustering
> Pearson correlation
> Euclidean distance
>
> In DWH project, it is assured that ___________ environment is similar to
> the production environment.
> Designing
> Development *(Right Answer)*
> Analysis
> Implementation
>
> For good decision making, data should be integrated across the
> organization to cross the LoB (Line of Business). This is to give the total
> view of organization from:
> Owner's Perspective
> Customer's Perspective *(Right Answer)*
> Decision Maker's Perspective
> Employee's Perspective
>
>
>
> Data mining derives its name from the similarities between searching for
> valuable business information in a large database, for example, finding
> linked products in gigabytes of store scanner data, and mining a mountain
> for a _________ of valuable ore.
>
> Furrow
>
> Streak
>
> Trough
>
> Vein *(Right Answer)*
>
>
>
>
>
> We must try to find the one access tool that will handle all the needs of
> their users.
>
> True
>
> False *(Right Answer)*
>
> Investing years in architecture and forgetting the primary purpose of
> solving business problems, results in inefficient application. This is the
> example of _________ mistake.
>
> Extreme Technology Design
>
> Extreme Architecture Design *(Right Answer)*
>
>
>
> The automated, prospective analyses offered by data mining move beyond the
> analysis of past
>
> events provided by respective tools typical of ___________.
>
> OLTP *(Right Answer)*
>
> OLAP
>
> Decision Support systems
>
> None of these
>
> There are many variants of the traditional nested-loop join, if there is an
> index is exploited, then it is called……
>
> Naïve nested loop join index
>
> Nested loop join temporary index *(Right Answer)*
>
> Index nested-loop joins
>
>
>
>
> A data warehouse implementation without an OLAP tool is always possible.
>
> True
>
> False *(Right Answer)*
>
>
>
>
>
> _____modeling technique is more appropriate for data warehouses.
>
> entity-relationship *(Right Answer)*
>
> dimensional
>
> physical
>
> None of the given
>
>
>
>
>
> The performance in a MOLAP cube comes from the O(1) look-up time for the
> array data structure.
>
>
>
> True *(Right Answer)*
>
> False
>
>
>
>
>
> Multi-dimensional databases (MDDs) typically use ___________ formats to
> store pre-summarized cube structures.
>
>
>
> SQL
>
> proprietary file *(Right Answer)***
>
> Object oriented
>
> Non- proprietary file
>
>
>
> Slice and Dice is changing the view of the data.
>
> True *(Right Answer)*
>
> False
>
>
>
>
>
>
>
> Data warehousing and on-line analytical processing (OLAP) are _______
> elements of decision support system.
>
>
>
> Unusual
>
> Essential *(Right Answer)*
>
> Optional
>
> None of the given
>
>
>
>
>
> Virtual cube is used to query two similar cubes by creating a third
> "virtual" cube by a join between two cubes.
>
> * *
>
> True *(Right Answer)*
>
> False
>
> * *
>
> Analytical processing uses ____________ , instead of record level access.
>
> multi-level aggregates *(Right Answer)*
>
> Single-level aggregates
>
> Single-level hierarchy
>
> None of the Given
>
>
>
>
>
> The divide&conquer cube partitioning approach helps alleviate the
> ____________ limitations of MOLAP implementation.
>
> Flexibility
>
> Maintainability
>
> Security
>
> Scalability *(Right Answer)*
>
>
>
>
>
> In a traditional MIS system, there is an almost linear sequence of queries.
>
> True *(Right Answer)*
>
> False
>
>
>
>
>
> Data Warehouse provides the best support for analysis while OLAP carries
> out the _________ task.
>
> Mandatory
>
> Whole
>
> Analysis *(Right Answer)*
>
> Prediction
>
>
>
>
>
> DOLAP allows download of "cube" structures to a desktop platform with the
> need for shared relational or cube server.
>
>
>
> True *(Right Answer)*
>
> False
>
>
>
>
>
> The STAR schema used for data design is a __________ consisting of fact and
> dimension tables.
>
> Select correct option:
>
> Network model
>
> Relational model *(Right Answer)*
>
> Hierarchical data model
>
> None of the given
>
>
>
> Data Warehouse provides the best support for analysis while OLAP carries
> out the _________ task.
>
> Select correct option:
>
> Mandatory
>
> Whole
>
> Analysis *(Right Answer)*
>
> Prediction
>
>
>
>
>
> Virtual cube is used to query two similar cubes by creating a third
> "virtual" cube by a join between two cubes.
>
> Select correct option:
>
> True *(Right Answer)*
>
> False
>
>
>
> Data warehousing and on-line analytical processing (OLAP) are _______
> elements of decision support system.
>
> Select correct option:
>
> Unusual
>
> Essential *(Right Answer)*
>
> Optional
>
> None of the given
>
>
>
> --
> *Zindagi mein 2 Logo ka buhat khayal rahkoooo
>
> *
> *Ist woh jiss ney tumhari jeet ke Liye buhat kuch hara hoo (Father)
>
> 2nd woh jiss ko tum ney har dukh me pukaara hoo (Mother)
> *
> *
> *
> *Regards, *
> *Umair Saulat*
>
> --
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>
>
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