Definition: Matching Rule Use
A matching rule use is a schema element that can be used to determine which attribute types can be used in conjunction with a given matching rule. Note that this only applies when using extensible match filters.
A matching rule use definition includes an OID for the matching rule that it applies to and a list of the names or OIDs of the attribute types that may be used in conjunction with that matching rule. If an attribute type is not included in this list, then it cannot be used in conjunction with the associated matching rule. If there is no matching rule use defined for a given matching rule, then it should be assumed that the matching rule can be used with any attribute type.
The set of matching rule uses defined in the server may be determined by retrieving the matchingRuleUse attribute of the subschema subentry. For more information about matching rule uses, see the Understanding Matching Rule Uses document.
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