At the same time, database products increasingly used the IBM-invented SQL (Structured Query Language). This changed with the poor reception of dBase IV, whose design and stability were so lacking that many users switched to other products. Many of these were technically stronger than dBase, but could not push it aside in the market. These included FoxBASE+ (later renamed FoxPro), Clipper, and other so-called xBase products. Starting in the mid-1980s, several companies produced their own variations on the dBase product and especially the dBase programming language.
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By the mid-1980s, Ashton-Tate was one of the "big three" software publishers in the early business software market, the others being Lotus Development and WordPerfect.
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A major upgrade was released as dBase III, and ported to a wider variety of platforms, adding UNIX, and VMS. On the PC platform, in particular, dBase became one of the best-selling software titles for a number of years. They licensed it and re-released it as dBASE II, and later ported to Apple II and IBM PC computers running DOS. Originally released as Vulcan for PTDOS in 1978, the CP/M port caught the attention of Ashton-Tate in 1980. dbf file, is widely used in applications needing a simple format to store structured data.
The dBase system includes the core database engine, a query system, a forms engine, and a programming language that ties all of these components together. FoxBASE+, FoxPro, Visual FoxPro, VP-InfoĭBase (also stylized dBASE) was one of the first database management systems for microcomputers and the most successful in its day.
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