Editing CICS (section)

===CICS as a distributed file server===
In 1986, IBM announced CICS support for the record-oriented file services defined by [[Distributed Data Management Architecture]] (DDM). This enabled programs on remote, network-connected computers to create, manage, and access files that had previously been available only within the CICS/MVS and CICS/VSE transaction processing environments.<ref>{{cite journal |title=IBM Gives PC Programs Direct Mainframe Access: PC Applications Can Alter Files |journal=[[InfoWorld]] |date=1987-02-23 |last=Warner |first=Edward |volume=9 |issue=8 |page=1 |url=https://books.google.com/books?id=1DAEAAAAMBAJ&pg=PA1 |access-date=2016-04-01 |archive-date=2016-12-24 |archive-url=https://web.archive.org/web/20161224182237/https://books.google.com/books?id=1DAEAAAAMBAJ&pg=PA1 |url-status=live }}</ref>

In newer versions of CICS, support for DDM has been removed. Support for the DDM component of CICS z/OS was discontinued at the end of 2003, and was removed from CICS for z/OS in version 5.2 onward.<ref>{{cite web |url=http://www.ibm.com/common/ssi/cgi-bin/ssialias?infotype=an&subtype=ca&supplier=897&letternum=ENUS214-107 |title=IBM CICS Transaction Server for z/OS, V5.2 takes service agility, operational efficiency, and cloud enablement to a new level |publisher=[[IBM]] |date=2014-04-07 |access-date=2016-04-14 |quote="CICS DDM is no longer available from IBM and support was discontinued, as of December 31, 2003. CICS DDM is no longer available in CICS TS from Version 5.2 onwards." |archive-date=2021-06-15 |archive-url=https://web.archive.org/web/20210615130501/https://www-01.ibm.com/common/ssi/cgi-bin/ssialias?infotype=an&subtype=ca&supplier=897&letternum=ENUS214-107 |url-status=live }}</ref> In CICS TS for z/VSE, support for DDM was stabilised at V1.1.1 level, with an announced intention to discontinue it in a future release.<ref>{{cite web |url=http://www-01.ibm.com/common/ssi/cgi-bin/ssialias?subtype=ca&infotype=an&appname=iSource&supplier=897&letternum=ENUS214-074 |title=IBM z/VSE Central Functions Version 9.2 - z/VSE Version 5.2 |publisher=[[IBM]] |date=April 7, 2014 |access-date=2016-04-14 |quote="Support for CICS Distributed Data Management (DDM) is stabilized in CICS TS for VSE/ESA V1.1.1. In a future release of CICS TS for z/VSE, IBM intends to discontinue support for CICS DDM." |archive-date=2016-03-24 |archive-url=https://web.archive.org/web/20160324192812/http://www-01.ibm.com/common/ssi/cgi-bin/ssialias?subtype=ca&infotype=an&appname=iSource&supplier=897&letternum=ENUS214-074 |url-status=live }}</ref> In CICS for z/VSE 2.1 onward, CICS/DDM is not supported.<ref>{{cite web |url=http://www-01.ibm.com/common/ssi/cgi-bin/ssialias?infotype=an&subtype=ca&supplier=897&letternum=ENUS215-362 |title=IBM CICS Transaction Server for z/VSE V2.1 delivers enhancements for future workloads |publisher=[[IBM]] |date=October 5, 2015 |access-date=2016-04-14 |quote="CICS Distributed Data Management (CICS/DDM) is not supported with CICS TS for z/VSE V2.1." |archive-date=2016-04-24 |archive-url=https://web.archive.org/web/20160424205210/http://www-01.ibm.com/common/ssi/cgi-bin/ssialias?infotype=an&subtype=ca&supplier=897&letternum=ENUS215-362 |url-status=live }}</ref>