Witten
Bainbridge
Nichols
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Facilities provided by Z39.50

Z39.50 Facility

Client-side description

Initialization

Establish connection with server and set/request resource limits.

Search

Initiate search using a registered query syntax, generating a result set server-side.

Retrieval

Retrieve a set of records from a specified result set: a large record may be segmented and transmitted piecemeal.

Result-set-delete

Request deletion of server-side result set or sets.

Access Control

Server initiated authentication check.

Accounting & Resource Control

Request status reports of committed server resources and dictate if server allowed to contact client when agreed limits reached.

Sort

Specify how a result set should be sorted.

Browse

Access ordered lists such as title and subject metadata.

Explain

Interrogate server to discover supported services, registries, and so on.

Extended Services

Access services that continue beyond the life of this client-server exchange such as persistent queries and database update.

Termination

Abruptly end client-server session: initiated by either client or server.



Table 7.1: Facilities provided by Z39.50;