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Questions and Answers
Which of the following best defines a data warehouse?
Which of the following best defines a data warehouse?
- A database that supports decision-making by providing consolidated historical data (correct)
- A database used for operational processes
- A database that is integrated with the organization's operational database
- A collection of unorganized and volatile data
What does it mean for a data warehouse to be subject-oriented?
What does it mean for a data warehouse to be subject-oriented?
- It focuses only on real-time data
- It integrates data from various operational databases
- It excludes data that are not useful in the decision-support process (correct)
- It includes all types of data, whether relevant to decision-making or not
What is the main purpose of a data warehouse in relation to information processing?
What is the main purpose of a data warehouse in relation to information processing?
- To provide a platform for consolidated, historical data for analysis (correct)
- To manage real-time data from operational databases
- To support transactional processing
- To store unorganized and volatile data
In the context of data warehousing, what does 'time-variant' refer to?
In the context of data warehousing, what does 'time-variant' refer to?
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What is the key feature that distinguishes a data warehouse from an operational database?
What is the key feature that distinguishes a data warehouse from an operational database?
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What is the primary focus of data warehouse?
What is the primary focus of data warehouse?
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Which type of data sources can be integrated into a data warehouse?
Which type of data sources can be integrated into a data warehouse?
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What distinguishes data warehouse data from operational database data in terms of time horizon?
What distinguishes data warehouse data from operational database data in terms of time horizon?
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What is a characteristic of the key structure in the data warehouse?
What is a characteristic of the key structure in the data warehouse?
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How does traditional heterogeneous DB integration differ from data warehouses?
How does traditional heterogeneous DB integration differ from data warehouses?
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