High Quality Content by WIKIPEDIA articles! xBase is the generic term for all programming languages that derive from the original dBASE (Ashton-Tate) programming language and database formats. These are sometimes informally known as dBASE "clones". While there was a non-commercial predecessor to the Ashton-Tate product (Vulcan written by Wayne Ratliff), most clones are based on Ashton-Tate's 1986 dBASE III+ release — scripts written in the dBASE III+ dialect are most likely to run on all the clones. Ashton-Tate always maintained that everything relating to dBASE was proprietary, and as a result, filed lawsuits against several of the "clone" software vendors. One effect of this action was to cause the clone vendors to avoid using the term "dBASE": a trademark term held by Ashton-Tate.

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