5.4

Metadata

Abstract

Metadata is data about data. Typical forms of metadata include tables, attributes, keys, indexes, and so forth. Metadata is typically kept in a repository. The repository can be active or passive. There are many uses of metadata including using metadata for analytical purposes, using metadata to compare multiple systems, establishing the lineage of data, comparing the existing environment to a proposed environment, and so forth.

Keywords

metadata
tables
keys
indexes
repository
active repository
passive repository
lineage of data
The classical definition of metadata is “data about data.” Indeed metadata is the descriptive data that defines important aspects of data to the operating system, the database management ...

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