FREE IMST Data Management Questions and Answers
What is a data warehouse used for?
A data warehouse is designed to consolidate and integrate data from various sources to support analysis and reporting. It provides a central repository where data can be aggregated and analyzed to facilitate business intelligence and decision-making.
What does data integrity refer to?
Data integrity involves ensuring that data is accurate, consistent, and reliable throughout its lifecycle. This includes measures to prevent data corruption and maintain the quality of data as it is stored, processed, and retrieved.
Which of the following is a primary benefit of using a relational database management system (RDBMS)?
An RDBMS stores data in tables that are linked by relationships, which helps maintain data consistency and integrity. This structured format allows for complex queries and data retrieval while managing relationships between different data sets.
What is data normalization in the context of database design?
Data normalization involves organizing a database to reduce redundancy and improve data integrity. This process typically involves dividing a database into two or more tables and defining relationships between the tables to minimize duplicate data and ensure data dependencies are properly managed.
Which data management strategy involves creating a copy of data to prevent loss due to failures or disasters?
Data replication involves creating copies of data across different locations or systems to ensure availability and prevent data loss in the event of a failure or disaster. This strategy helps in maintaining data continuity and reliability.