COMPUTER APPLICATIONS
DATABASE MANAGEMENT SYSTEMS
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which is not a property of data warehouse?
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subject oriented
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time variant
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collection from heterogeneous sources
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volatile
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Explanation:
Detailed explanation-1: -Answer-D) Volatile is not a property of the data warehouse.
Detailed explanation-2: -Nonvolatile means that, once entered into the warehouse, data should not change. This is logical because the purpose of a warehouse is to enable you to analyze what has occurred.
Detailed explanation-3: -The three main types of data warehouses are enterprise data warehouse (EDW), operational data store (ODS), and data mart.
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