Definition: Presence Search Filter
A presence search filter is a type of search filter that can be used to identify entries that have at least one value for a specified attribute.
The string representation of an LDAP presence filter is comprised of an opening parenthesis followed by the attribute name, an equal sign, an asterisk, and the closing parenthesis. For example, an equality filter of "aci=*)" will match any entry containing at least one value for the aci attribute.