LDAP Syntaxes and Matching Rules


LDAP Syntaxes and Matching Rules (RFC 4517) defines a base set of syntaxes and matching rules for use in defining attributes for LDAP directories.

Each attribute stored in a Lightweight Directory Access Protocol (LDAP) directory, whose values may be transferred in the LDAP protocol, has a defined syntax that constrains the structure and format of its values. The comparison semantics for values of a syntax are not part of the syntax definition but are instead provided through separately defined matching rules.

Matching rules specify an argument, an Assertion Value, which also has a defined syntax.

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