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However, starting in 1980, the technological age of the product became apparent and sales of Mark IV leveled off, amassing only about 60 percent of what Informatics had planned for.<ref>Campbell-Kelly, ''From Airline Reservations to Sonic the Hedgehog'', p. 118. See also chart on p. 117.</ref>
A successor product, Mark V, was released in 1981–82.<ref>See {{cite news | author-last=Snyders | author-first=Jan | title=Programmer Aids Increase Productivity | work=Computer Decisions | date=January 1982 | page= 38 | url=https://www.proquest.com/docview/196846127 | id={{ProQuest|196846127}} | via=ProQuest}}, which implies it was either released in 1981 or this particular customer was a beta user. See also {{cite news | url=https://books.google.com/books?id=MMSvi567BMUC&pg=PA57 | title=Introducing Mark V (TM) for CICS users | newspaper=Computerworld | date=March 5, 1984 | page=57}}, an advertisement that refers to Mark V for IMS having come out two years prior.</ref> In contrast to the batch-only features of Mark IV, the goal of Mark V was the generation of online applications, although initially this was still done through some batch-oriented development steps.<ref name="elec-markv">{{cite news |url=https://books.google.com/books?id=tllJAQAAIAAJ&q=informatics+%22mark+v%22 |magazine=Electronics |date=1982 |page=136? |title=uncertain}}</ref>
The same taxonomy of application generators mentioned earlier placed Mark V in the category of "Application Development Systems", as it covered more advanced capabilities such as generating online systems with screen dialogue and similar features.<ref name="card-graf"/> Mark V was made available for two IBM mainframe online transaction processing environments, [[IMS/DC]] and, beginning in 1983, [[CICS]].<ref>{{cite news |url=https://books.google.com/books?id=xg3P92QsSqIC&pg=PA57 |title=Informatics Updates Mark V For IBM CICS Environments |magazine=Computerworld |date=October 3, 1983 |page=57}}</ref> Mark V never become a dominant force in the marketplace like Mark IV was. It had many competitors, including products from Applied Data Research, IBM, [[Cincom Systems]], [[DMW Europe]], and [[CA-Telon#Pansophic Systems|Pansophic Systems]].<ref>Konsynski, "Advances in Information System Design", p. 27.</ref>
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