Databases Reference
In-Depth Information
episode in an assertion version table can sometime later be
followed by the insertion of a new episode for the same object.
In a non-temporal table, each row must conform to entity
integrity and referential integrity constraints. In an asserted ver-
sion table, each version must conform to temporal entity integ-
rity and temporal referential integrity constraints. As we will
see, the parallels are in more than name only. Temporal entity
integrity really is entity integrity applied to temporal data. Tem-
poral referential integrity really is referential integrity applied to
temporal data.
Glossary References
Glossary entries whose definitions form strong inter-
dependencies are grouped together in the following list. The
same glossary entries may be grouped together in different ways
at the end of different chapters, each grouping reflecting the
semantic perspective of each chapter. There will usually be sev-
eral other, and often many other, glossary entries that are not
included in the list, and we recommend that the Glossary be
consulted whenever an unfamiliar term is encountered.
as-is
as-was
Asserted Versioning
Asserted Versioning Framework (AVF)
episode
persistent object
state
thing
physical transaction
temporal transaction
temporal entity integrity (TEI)
temporal referential integrity (TRI)
the alternative temporal model
the Asserted Versioning temporal model
the standard temporal model
