Database Systems: Design, Implementation, & Management
Database Systems: Design, Implementation, & Management
12th Edition
ISBN: 9781305627482
Author: Carlos Coronel, Steven Morris
Publisher: Cengage Learning
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Chapter 13, Problem 7RQ
Program Plan Intro

Operational Data:

  • Data quality is one of the key features of enterprise data management.
  • The data obtained from the operational system is low quality data because of the following reasons:
    • Obtaining the data from outside the organization.
    • Redundant storage of data and inconsistent metadata.
    • Problems while entering data due to poor interfaces, manual mistypes of data.
    • The poor quality of the data is not recognized by the organization itself is an issue.

Data warehouse:

  • Data warehouse contains the collection of data that are used for decision making and business intelligence.
  • It is a unique kind of database so it focuses on business intelligence, time variant data, and external data.
  • It is a subject-oriented, integrated, time-variant, and non-updateable data.

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