DSSResources.COM
Channels

- For Consultants
- For Developers
- For Managers
- For Professors
- For Researchers
- For Students

- Glossary Home

Metadata

Data about the data in a data warehouse. Metadata provides a directory to help the DSS locate the contents of the data warehouse; it is a guide to mapping data as it is transformed from the operational environment to the data warehouse environment; and it serves as a guide to the algorithms used for summarization of current detailed data. Metadata is semantic information associated with a given variable. Metadata must include business definitions of the data and clear, accurate descriptions of data types, potential values, original source system, data formats, and other characteristics. Metadata defines and describes business data. Examples of metadata include data element descriptions, data type descriptions, attribute/property descriptions, range/domain descriptions, and process/method descriptions. The repository environment encompasses all corporate metadata resources: database catalogs, data dictionaries, and navigation services. Metadata includes things like the name, length, valid values, and description of a data element. Metadata is stored in a data dictionary and repository. It insulates the data warehouse from changes in the schema of operational systems.

DSS Home |  About Us |  Contact Us |  Site Index |  Subscribe | What's New
Copyright © 1995-2015 by D. J. Power (see his home page). DSSResources.COMsm is maintained by Daniel J. Power of PowerEnterprises.net. Please contact him at djpower1950 at gmail.com with questions. See disclaimer and privacy statement. This page was last modified .


Google
 
Web DSSResources.com