Information Retrieval Z39.50 for Protocol Specification
Engr. Faizullah Mahar · Information Technology Journal · 2003
Abstract: The information retrieval service describes an activity between two applications: an initiating application, the client and a responding application, the server. The server is associated with one or more databases. Communication between client and server is carried out by the Z39.50 protocol. The protocol specifies format and procedures governing the exchange of messages between client and server. Thus enabling a client to request that the server search a data base and identify records that meets specified criteria and retrieve some or all of the identified records. This paper describes the protocol procedures, protocol model, rules of extensibility, general and specific conformance requirements and detail requirements for the protocol addresses communication between the client and server. Key words: Protocol, retrieval, state table, conformance, syntax Basic of the protocol The protocol specifies formats and procedures governing the exchange of messages between a client and server, thus enabling the client to (a) request that the server search a data base and identify records that meet specified criteria and (b) retrieve some or all of the identified