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Many object databases, for example VOSS, offer support for [[versioning]]. An object can be viewed as the set of all its versions. Also, object versions can be treated as objects in their own right. Some object databases also provide systematic support for [[database trigger|trigger]]s and constraints which are the basis of [[active database]]s.
The efficiency of such a database is also greatly improved in areas which demand massive amounts of data about one item. For example, a banking institution could get the user's account information and provide them efficiently with extensive information such as transactions, account information entries etc. The [[Big O Notation]] for such a database paradigm drops from O(n) to O(1), greatly increasing efficiency in these specific cases. what may be case this best
==ODBMS Characteristics==
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