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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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Important Terms and Definitions MCQs | Page 4 of 14

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Q31.
How is a Data Warehouse different from a Data Mart in terms of implementation?

a.

Data Warehouse is a subset of Data Mart

b.

Data Warehouse is independent, while Data Mart is centralized

c.

Data Warehouse is a centralized repository with dependent Data Marts

d.

Data Warehouse is a temporary storage for Data Marts

Discuss
Answer: (c).Data Warehouse is a centralized repository with dependent Data Marts Explanation:In the top-down approach of implementation, a Data Warehouse represents a centralized repository with a set of dependent data marts.
Q32.
What is a Data Warehouse Appliance composed of?

a.

Individual components for customization

b.

Disparate set of hardware and software

c.

Integrated set of servers, storage, operating systems, DBMS, and pre-optimized software

d.

Specific software for data warehousing only

Discuss
Answer: (c).Integrated set of servers, storage, operating systems, DBMS, and pre-optimized software Explanation:A Data Warehouse Appliance consists of an integrated set of servers, storage, operating systems, DBMS, and software, specifically pre-installed and pre-optimized for data warehousing.
Q33.
What does DBMS stand for, and what is its primary function?

a.

Data Business Management System, managing business processes

b.

Database Maintenance System, maintaining file systems

c.

Database Management System, storing, accessing, and managing data in databases

d.

Distributed Business Model System, coordinating business operations

Discuss
Answer: (c).Database Management System, storing, accessing, and managing data in databases Explanation:DBMS stands for Database Management System, and its primary function is to store, access, maintain, manage, and safeguard data in databases.
Q34.
What does DD (Data Dictionary) store in a database management system?

a.

Database records

b.

Data relationships

c.

Data structures and relationships

d.

Database queries

Discuss
Answer: (c).Data structures and relationships Explanation:DD (Data Dictionary) in a database management system stores the data structures and relationships.
Q35.
What is the purpose of DDL (Data Definition Language) in a DBMS?

a.

Executing queries

b.

Retrieving data

c.

Managing data relationships

d.

Defining data structures in the data dictionary

Discuss
Answer: (d).Defining data structures in the data dictionary Explanation:DDL (Data Definition Language) in a database management system is used for defining data structures in the data dictionary.
Q36.
In the dimensional data model, what does a Dimension Table contain?

a.

Detailed transactional data

b.

Summarized business facts

c.

Attributes of a single business dimension

d.

Historical data records

Discuss
Answer: (c).Attributes of a single business dimension Explanation:In the dimensional data model, each Dimension Table contains the attributes of a single business dimension.
Q37.
What is DOLAP in the context of OLAP?

a.

Database Online Analytical Processing

b.

Distributed OLAP

c.

Desktop Online Analytical Processing

d.

Dimensional OLAP

Discuss
Answer: (c).Desktop Online Analytical Processing Explanation:DOLAP stands for Desktop OLAP, a variation of ROLAP where multidimensional cubes are created and processed on the desktop machine.
Q38.
What does Drill Down refer to in data analysis?

a.

Moving to higher levels of detailed data

b.

Starting from detailed data to summary data

c.

Analysis of summarized data

d.

Retrieving data from external sources

Discuss
Answer: (b).Starting from detailed data to summary data Explanation:Drill Down is a method of analysis for retrieving lower levels of detailed data starting from summary data.
Q39.
What is the primary function of a DSS (Decision Support System)?

a.

Database storage and retrieval

b.

Data analysis and reporting

c.

Application development

d.

System integration

Discuss
Answer: (b).Data analysis and reporting Explanation:A DSS (Decision Support System) is an application that enables users to make strategic decisions through data analysis and reporting.
Q40.
What does EAI (Enterprise Application Integration) enable?

a.

Isolation of systems and applications

b.

Centralized data storage

c.

Integration of systems and applications across the enterprise

d.

System abstraction for individual departments

Discuss
Answer: (c).Integration of systems and applications across the enterprise Explanation:EAI (Enterprise Application Integration) is a set of technologies and services that form a framework to enable the integration of systems and applications across the enterprise.
Page 4 of 14

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