An entry-sequenced data set (ESDS) is a type of data set used by IBM's VSAM computer data storage system.[1]: 5 Records are accessed based on their sequential order, that is, the order in which they were written to the file; which means that accessing a particular record involves searching all the records sequentially until it is located, or by using a relative physical address (Relative byte address, RBA), i.e. the number of bytes from the beginning of the file to start reading.[1]: 28
Keys may be used to access records in an ESDS by defining an alternate index.[1]: 15
entry, sequenced, data, this, article, includes, list, references, related, reading, external, links, sources, remain, unclear, because, lacks, inline, citations, please, help, improve, this, article, introducing, more, precise, citations, december, 2017, lear. This article includes a list of references related reading or external links but its sources remain unclear because it lacks inline citations Please help improve this article by introducing more precise citations December 2017 Learn how and when to remove this template message An entry sequenced data set ESDS is a type of data set used by IBM s VSAM computer data storage system 1 5 Records are accessed based on their sequential order that is the order in which they were written to the file which means that accessing a particular record involves searching all the records sequentially until it is located or by using a relative physical address Relative byte address RBA i e the number of bytes from the beginning of the file to start reading 1 28 Keys may be used to access records in an ESDS by defining an alternate index 1 15 See also editKey Sequenced Data Set Linear Data Set Relative Record Data Set Random accessReferences edit MVS Forums Technical FAQ s VSAM Mvsforums com Retrieved 12 December 2017 a b c Lovelace Mary Dovidauskas Jose Salla Alvaro Sokal Valeria March 2013 Chapter 1 VSAM basics VSAM Demystified PDF Redbooks 3 ed IBM nbsp This computer storage related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Entry Sequenced Data Set amp oldid 1016441222, wikipedia, wiki, book, books, library,
