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Welcome to the Importance of Data Quality MCQs Page

Dive deep into the fascinating world of Importance of Data Quality with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Importance of Data Quality, a crucial aspect of Data Warehousing and OLAP. In this section, you will encounter a diverse range of MCQs that cover various aspects of Importance of Data Quality, 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 Importance of Data Quality. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of Data Warehousing and OLAP.

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Importance of Data Quality MCQs | Page 3 of 10

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Q21.
What does completeness refer to in data quality?

a.

Resolving duplication of records in a system

b.

Conforming to prescribed business rules

c.

Ensuring there are no missing values for a given attribute

d.

Structuring a data item into individual components

Discuss
Answer: (c).Ensuring there are no missing values for a given attribute Explanation:Completeness in data quality means there are no missing values for a given attribute in the system.
Q22.
What does conformance to business rules relate to in data quality?

a.

Structural definiteness of data items

b.

Data anomaly

c.

Duplication of records

d.

Adherence to prescribed business rules by data items

Discuss
Answer: (d).Adherence to prescribed business rules by data items Explanation:Conformance to business rules in data quality means that the values of each data item adhere to prescribed business rules.
Q23.
What is the role of clarity in data quality?

a.

Ensures data elements are well-named

b.

Refers to the timeliness of data

c.

Involves adherence to data integrity rules

d.

Indicates proper data formatting

Discuss
Answer: (a).Ensures data elements are well-named Explanation:Clarity in data quality ensures that data elements are well-named and easily understood by users.
Q24.
Who determines the timeliness of data in the context of data quality?

a.

Database administrators

b.

Source systems

c.

Users

d.

Data warehouse administrators

Discuss
Answer: (c).Users Explanation:Users determine the timeliness of data based on their expectations and requirements.
Q25.
What role does usefulness play in data quality?

a.

Ensures all data elements are accurate

b.

Requires adherence to data integrity rules

c.

Ensures that every data element in the data warehouse satisfies user requirements

d.

Focuses on data naming conventions

Discuss
Answer: (c).Ensures that every data element in the data warehouse satisfies user requirements Explanation:Usefulness in data quality means that every data element in the data warehouse must satisfy some requirements of the collection of users.
Q26.
What are the two integrity rules in the context of data integrity?

a.

Entity integrity and relational integrity

b.

Primary integrity and foreign integrity

c.

Referential integrity and entity integrity

d.

Data integrity and referential integrity

Discuss
Answer: (c).Referential integrity and entity integrity Explanation:The two integrity rules are "entity integrity" and "referential integrity."
Q27.
How does improved data quality benefit data warehouse users in the context of timely information?

a.

It ensures data is always up to date

b.

It helps deliver timely information critical for analyses

c.

It reduces the volume of data in the data warehouse

d.

It prevents any errors in data analysis

Discuss
Answer: (b).It helps deliver timely information critical for analyses Explanation:Improved data quality ensures timely information, which is critical for performing timely analyses in a data warehouse.
Q28.
How does complete and accurate information improve customer service?

a.

It reduces the number of customers seeking assistance.

b.

It makes customer service representatives more respectful.

c.

It allows customer service representatives to offer better assistance.

d.

It leads to fewer customer service calls.

Discuss
Answer: (c).It allows customer service representatives to offer better assistance. Explanation:Complete and accurate information enables customer service representatives to provide better assistance to customers, leading to improved customer service.
Q29.
How can quality data benefit marketing departments in a data warehouse?

a.

It reduces the need for marketing campaigns.

b.

It opens the doors to immense opportunities for cross-selling.

c.

It limits the marketing strategies that can be implemented.

d.

It hinders marketing campaigns.

Discuss
Answer: (b).It opens the doors to immense opportunities for cross-selling. Explanation:Quality data in a data warehouse opens opportunities for marketing, allowing marketing departments to conduct well-targeted campaigns and cross-sell products.
Q30.
What risks are associated with poor data quality?

a.

Wasted time and legal action

b.

Improved productivity and reduced costs

c.

Increased strategic decisions and marketing opportunities

d.

Reliable decision-making and customer service

Discuss
Answer: (a).Wasted time and legal action Explanation:Poor data quality can lead to risks such as wasted time, malfunction of processes and systems, and even legal action by customers and business partners.
Page 3 of 10

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