COMPUTER APPLICATIONS
DATABASE MANAGEMENT SYSTEMS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Data mining
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Data warehouse
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Data mart
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Basis data
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Detailed explanation-1: -The term “Data Warehouse” was first coined by Bill Inmon in 1990. According to Inmon, a data warehouse is a subject oriented, integrated, time-variant, and non-volatile collection of data. This data helps analysts to take informed decisions in an organization.
Detailed explanation-2: -The term Data Warehouse was coined by Bill Inmon in 1990, which he defined in the following way: A data warehouse is a subject-oriented, integrated, time-variant and non-volatile collection of data in support of management’s decision making process.
Detailed explanation-3: -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-4: -Subject-oriented: A data warehouse typically provides information on a topic (such as a sales inventory or supply chain) rather than company operations. Time-variant: Time variant keys (e.g., for the date, month, time) are typically present. Integrated: A data warehouse combines data from various sources.