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Welcome to the Building Blocks of Data Warehouse MCQs Page

Dive deep into the fascinating world of Building Blocks of Data Warehouse with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Building Blocks of Data Warehouse, a crucial aspect of Data Warehousing and OLAP. In this section, you will encounter a diverse range of MCQs that cover various aspects of Building Blocks of Data Warehouse, 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 Building Blocks of Data Warehouse. 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 Building Blocks of Data Warehouse. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Building Blocks of Data Warehouse MCQs | Page 8 of 10

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Q71.
What is the primary distinction between the initial data loading and ongoing data loading into a data warehouse?

a.

Initial loading is fast, and ongoing loading is slow

b.

Initial loading moves large volumes of data, while ongoing loading involves incremental data revisions

c.

Initial loading only happens once, while ongoing loading is continuous

d.

Initial loading focuses on data cleansing, while ongoing loading involves data transformation

Discuss
Answer: (b).Initial loading moves large volumes of data, while ongoing loading involves incremental data revisions Explanation:The initial loading involves moving large volumes of data, while ongoing loading deals with incremental data revisions from source systems.
Q72.
Why is the data storage for a data warehouse kept separate from the data storage for operational systems?

a.

Operational systems require read-only data repositories

b.

Data storage for operational systems is highly normalized

c.

Data warehouse data is primarily used for online transaction processing

d.

Data warehouse data is continually updated

Discuss
Answer: (b).Data storage for operational systems is highly normalized Explanation:Data storage for operational systems is highly normalized, while data storage for a data warehouse contains historical data in structures suitable for analysis.
Q73.
What distinguishes data storage for operational systems from data storage for a data warehouse?

a.

Operational systems contain historical data

b.

Data warehouse data is highly normalized

c.

Data storage for operational systems supports analysis

d.

Data storage for operational systems is "read-only"

Discuss
Answer: (d).Data storage for operational systems is "read-only" Explanation:Data storage for operational systems is "read-only" and does not continuously update like operational systems.
Q74.
Why is it important for data in a data warehouse to be stable and represent snapshots at specified periods?

a.

To ensure fast retrieval of individual pieces of information

b.

To support online transaction processing

c.

To facilitate ongoing data loading

d.

To enable accurate and consistent analysis

Discuss
Answer: (d).To enable accurate and consistent analysis Explanation:Stable data snapshots at specified periods are essential for accurate and consistent analysis in a data warehouse.
Q75.
What is the primary purpose of multidimensional database management systems (MDDBs) in data warehouses?

a.

Data storage for online transaction processing

b.

Aggregating data for analysis

c.

Data cleansing and transformation

d.

Data retrieval for operational systems

Discuss
Answer: (b).Aggregating data for analysis Explanation:MDDBs are used in data warehouses for aggregating data in various ways and storing summary data for analysis.
Q76.
What type of databases are commonly employed in most data warehouses?

a.

Hierarchical databases

b.

Relational database management systems

c.

NoSQL databases

d.

XML databases

Discuss
Answer: (b).Relational database management systems Explanation:Most data warehouses employ relational database management systems for data storage.
Q77.
Who typically needs prepackaged reports and preset queries from the data warehouse?

a.

Novice users

b.

Casual users

c.

Business analysts

d.

Power users

Discuss
Answer: (a).Novice users Explanation:Novice users come to the data warehouse with no training and require prefabricated reports and preset queries.
Q78.
Which type of user needs information once in a while, not regularly, and also requires prepackaged information?

a.

Novice user

b.

Casual user

c.

Business analyst

d.

Power user

Discuss
Answer: (b).Casual user Explanation:Casual users need information infrequently and also rely on prepackaged information.
Q79.
What is the primary objective of a business analyst when using the data warehouse?

a.

Prefabricated reports

b.

Simple data retrieval

c.

Complex analysis using data in the data warehouse

d.

Creating custom reports and ad hoc queries

Discuss
Answer: (c).Complex analysis using data in the data warehouse Explanation:Business analysts seek the ability to perform complex analysis using the information in the data warehouse.
Q80.
What distinguishes a power user from other types of users in a data warehouse?

a.

Prefabricated reports

b.

Infrequent data needs

c.

Ability to navigate and create custom reports and ad hoc queries

d.

No access to data warehouse

Discuss
Answer: (c).Ability to navigate and create custom reports and ad hoc queries Explanation:Power users have the ability to navigate the data warehouse, format their own queries, drill through data layers, and create custom reports and ad hoc queries.
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