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Metadata
is the “data describing the data”, and is particularly appropriate for object
modeling. Metadata files and databases contain the names and structures of
object models in electronic format. A metabase
(sometimes called a metadatabase or metadata repository) is a
database for storing metadata (data that describes data) for a specific
purpose. For example, a metabase might include metadata about all configuration
information in a system gathered from a number of sources. A physical metabase
is one in which the metadata is actually collected into a single place before
it is accessed. A virtual metabase is one in which metadata is gathered on the
fly when it is needed, possibly when a program is executing. Metadata is
usually expressed in XML.
Metadata
is becoming increasingly important for managing data because it acts as a roster
of what data exists and possibly where it exists.
Keywords:
Metadata, metabase,
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