See dBase.

Base is the generic term for all programming languages that derive from the original d BASE (Ashton-Tate) programming language and database formats. These are sometimes informally known as dBASE "clones". There are indicators that there was a non-commercial predecessor, although most clones are based on the dBASE commercial product.

Xbase is an XBase compatible C++ class library. It provides C and C++ programmers with a cross-platform class and function library for manipulating Xbase type datafiles and indexes. There is support for .DBF and .NDX files , and limited support is also supplied for .