August 2010
Intermediate to advanced
512 pages
13h 53m
English
Content preview from Managing Time in Relational DatabasesBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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4. The Origins of Asserted Versioning
IT Best PracticesContents
A Non-Temporal Table and a Basic Version Table77
Logical Delete Versioning83
Temporal Gap Versioning86
The Scope and Limits of Best Practice Versioning92
Glossary References93
Lots of things are important to us. That's why we keep data about them in our databases. In a non-temporal table, each one of them, i.e. each object, is represented by one and only one row. In a version table, however, each row represents a period of time ...
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