Z39.50: Standard Communication Protocol

Z39.50: Standard Communication Protocol

  • ANSI/NISO Z39.50 is the American National Standard Information Retrieval Application Service Definition and Protocol Specification for Open Systems Interconnection
  • It specified a set of rules and procedures for the behavior of two systems communicating for the purposes of database searching and information  retrieval. As a network application standard, Z39.50 is an open standard that enables communication between systems that run on different hardware and use different software.
  • The Z39.50 standard was developed to overcome the problems associated with multiple database searching such as having to know the unique menus, command language, and search procedures of each system accessed
  • The latest edition of Z39.50 was approved in 1995 by the National Information Standards Organization (NISO), the only organization accredited by the American National Standards Institute (ANSI) to approve and maintain standards for information services, libraries and publishers.
  • libraryenvironments and is often incorporated intointegrated library systemsand personalbibliographic reference software. Interlibrary catalogue searches forinterlibrary loanare often implemented with Z39.50 queries

SET (Maharashtra) Examination 16th April 2017

1 Commencement of online Application 27 Dec 2016
2 Last date for Applying Online 10 Jan 2017
3 Availability of Admit Card on website 06 Apr 2017
4 Date of Examination 16 Apr 2017


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