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Dear Students!

       Please note that QUIZ-4 of CS614 will be launched on 11th of August, 2014 (11-August-2014) and will include Lectures No. 34 to 38.

QUIZ will last for 48 hours only and no alternate or offline will be provided once it is missed, so try to attempt QUIZ at your earliest.

For any query: CS614@vu.edu.pk

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Replies to This Discussion

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

 

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

 

ye sare  quiz no. 4 hn?  mean lecture no . 34 to 38???????

__________________ 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

 

Question # 3 of 10

Horizontally wide data means:

Select correct option:

                Dataset has large no. of attributes

                Dataset has large no. of records

                Dataset has attribute skews

                Dataset has partitioning skews

               

Question # 4 of 10

Which of the following is NOT one of the top-10 mistakes that should be avoided during DWH development?

Select correct option:

                Not interacting directly with end user

                Not being an accommodating person

                Isolating IT support people from business users

                Training the users with dummy data and considering it success

               

Question # 5 of 10

Which of the following is NOT one of the examples of dynamic attributes?

Select correct option:

                Daily Sale

                Date of Birth cnfim not

                Air pressure

                None of the given options

               

Question # 6 of 10

In context of requirement definition phase of Kimball’s DWH development approach, ________ is positioned as a findings review and prioritization meeting.

Select correct option:

                System analysis

                Scope definition

                Requirement configuration

                Requirements wrap-up presentation

               

Question # 7 of 10 ( Start time: 12:30:29 AM )      Total Marks: 1

Which of the following activity/activities is/are part of project planning phase in Kimballs DWH development approach?

Select correct option:

                Obtain resources

                Establish the preliminary scope and justification

                Assess organization's readiness for a data warehouse initiative

                All of the given options

 

 

Question # 8 of 10

Which of the following activity executes parallel with all other activities in Kimball’s DWH development approach?

Select correct option:

                Requirement elicitation

                Project Planning

                Project management

                Deployment

 

Question # 9 of 10

Improper documentation results the problem(s) like:

Select correct option:

                Maintenance issue

                New developers unable to configure already existing code

                Lot of time required for enhancing the code

                All of the given options

               

Question # 10 of 10 ( Start time: 12:33:02 AM )   Total Marks: 1

Goal driven approach of data warehouse development was result of ______ work

Select correct option:

                Bill Inmon

                Ralph Kimball

                Böhnlein and Ulbrich-vom

                Westerman

 

aj kiun ni???????/

zakki?

knowledge ni h?????????????????

no..its Discovery driven..in contrast data mining..

pg 24
 in contrast is discovery-driven in the sense that patterns are automatically.
 
pg 49

 

10th ka ans btao??????????? zakki?  where r u?

My Today Quizz 

1_If every key in the data file is represented in the index file then index is

 Dense Index

Sparse Index

Inverted Index

None

2_The goal of ___________ is to look at as few blocks as possible to find the matching records(s).

Indexing

Partitioning

Joining

None

3_An optimized structure which is built primarily for retrieval, with update being only a secondary consideration is

OLTP

OLAP

DSS

inverted Index

 

4_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

Larger

Shorter

None

5_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!”

 

6_During business hours, most ______ systems should probably not use parallel execution.

OLAP

DSS

Data Mining

OLTP

 

7_ _______________, 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

None of these

8_ _______________, 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

None of these

 

9_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

None of these

 

10_A dense index, if fits into memory, costs only ______ disk I/O access to locate a record by given key.

One

Two

Linear

Quadratic

Jazzak Allah for sharing Fairy n Romio..

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