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Welcome to the Important Terms and Definitions MCQs Page

Dive deep into the fascinating world of Important Terms and Definitions with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Important Terms and Definitions, a crucial aspect of Data Warehousing and OLAP. In this section, you will encounter a diverse range of MCQs that cover various aspects of Important Terms and Definitions, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within Data Warehousing and OLAP.

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Check out the MCQs below to embark on an enriching journey through Important Terms and Definitions. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of Data Warehousing and OLAP.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Important Terms and Definitions. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Important Terms and Definitions MCQs | Page 11 of 14

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Q101.
What is Replication, and how is it carried out?

a.

The process of transforming physical schema into a logical model

b.

The process of creating copies of the database, either in real time or in a deferred mode

c.

The process of managing assets in a project

d.

The process of creating multidimensional data cubes

Discuss
Answer: (b).The process of creating copies of the database, either in real time or in a deferred mode Explanation:Replication is a method for creating copies of the database, either in real time or in a deferred mode.
Q102.
What is Reverse Engineering in the context of databases?

a.

Transforming logical models into physical schemas

b.

Creating copies of the database

c.

Creating multidimensional data cubes

d.

Transforming the physical schema of a database into a logical model

Discuss
Answer: (d).Transforming the physical schema of a database into a logical model Explanation:Reverse Engineering is the process of transforming the physical schema of any particular database into a logical model.
Q103.
What does ROA stand for, and what does it measure?

a.

Return on Assets; measures payback from a project for assets deployed

b.

Relational Online Analytical Processing; measures the efficiency of online analytical processing in relational databases

c.

Return on Analysis; measures the effectiveness of data analysis projects

d.

Relational Online Assets; measures the value of assets in relational databases

Discuss
Answer: (a).Return on Assets; measures payback from a project for assets deployed Explanation:ROA stands for Return on Assets, and it measures payback from a project for assets deployed.
Q104.
What does ROI stand for, and what does it measure?

a.

Return on Investment; measures payback from a project for assets deployed

b.

Relational Online Investment; measures the value of investments in relational databases

c.

Return on Integrity; measures the effectiveness of data integrity projects

d.

Relational Online Integrity; measures the integrity of online data in relational databases

Discuss
Answer: (a).Return on Investment; measures payback from a project for assets deployed Explanation:ROI stands for Return on Investment, and it measures payback from a project for the investment made.
Q105.
What does ROLAP stand for, and how does it process analytical data?

a.

Redundant Online Analytical Processing; processes analytical data redundantly

b.

Relational Online Analytical Processing; creates multidimensional data cubes on the fly by the relational database engine

c.

Return on Analytical Processing; measures the effectiveness of analytical processing projects

d.

Relational Online Analysis Protocol; a protocol for analyzing data in relational databases

Discuss
Answer: (b).Relational Online Analytical Processing; creates multidimensional data cubes on the fly by the relational database engine Explanation:ROLAP stands for Relational Online Analytical Processing, and it is an analytical processing technique in which multidimensional data cubes are created on the fly by the relational database engine.
Q106.
What does "Roll Up" mean in the context of data analysis?

a.

Rolling back changes made to the database

b.

Rolling out new features in a database

c.

Rolling higher levels of summary data starting from detailed data

d.

Rolling multidimensional data cubes

Discuss
Answer: (c).Rolling higher levels of summary data starting from detailed data Explanation:Roll Up is a method of analysis for retrieving higher levels of summary data starting from detailed data.
Q107.
What is Scalability, and what does it entail?

a.

The ability to support increasing numbers of users in cost-effective increments without adversely affecting business operations

b.

The ability to scale down the number of users in a system

c.

The ability to support users without cost considerations

d.

The ability to scale up business operations without affecting user numbers

Discuss
Answer: (a).The ability to support increasing numbers of users in cost-effective increments without adversely affecting business operations Explanation:Scalability is the ability to support increasing numbers of users in cost-effective increments without adversely affecting business operations.
Q108.
What is a Schema in the context of databases?

a.

A programming language for database management

b.

A collection of tables that forms a database

c.

A method for data analysis in databases

d.

A system for database replication

Discuss
Answer: (b).A collection of tables that forms a database Explanation:A Schema is a collection of tables that forms a database.
Q109.
What is the purpose of a Scorecard in the context of reporting?

a.

Offline reporting for historical data analysis

b.

Real-time reporting to monitor performance against targets

c.

Reporting for database schema changes

d.

Reporting for database roll-up operations

Discuss
Answer: (b).Real-time reporting to monitor performance against targets Explanation:A Scorecard is online, real-time reporting to monitor performance against targets.
Q110.
What does "Slice and Dice" refer to in the context of data analysis?

a.

Slicing and dicing data for encryption purposes

b.

A method for database replication

c.

A method of analysis where multidimensional data is presented in many ways by rotating the presentation between columns, rows, and pages

d.

A method for database schema changes

Discuss
Answer: (c).A method of analysis where multidimensional data is presented in many ways by rotating the presentation between columns, rows, and pages Explanation:"Slice and Dice" is the term commonly used for a method of analysis where multidimensional data is presented in many ways by rotating the presentation between columns, rows, and pages.
Page 11 of 14

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