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<h1>Unique Constraints</h1>
<p>Unique constraint in RDBMS is a field or combination of
fields that uniquely defines a record. In an object database world unique
constraints will uniquely define an object. In db4o unique constraints were
first introduced in version 6.2 and are still work in progress. Current version
supports unique constraints over only one field. For more information see
<a href="../../../implementation_strategies/unique_constraints.html" class="wikiLink">Unique Constraints</a></p>
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This revision (1) was last Modified 2007-06-02T20:25:40 by Tetyana.
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