Response is list of terms suitable for searching. Used to discover information about a server, including available databases, supported attribute combinations, record syntaxes, and element specifications. Also includes human readable information such as database descriptions and hours of operation. The seven currently defined features include persistent result sets, periodic query, item order, and database update. Server response includes acceptance or rejection, actual buffer sizes, and features.
Response contains operation status.
Present Client request for specific records from named result set. Response contains records, not necessarily all that were requested. Client requests via Present that a records be returned in multiple server-generated Segment PDUs. Allows continuous transmission of many records inside PDU buffers of limited size. Search Client request to search, creating result set of records on server.