In 1990, Borland also started work on an internal dBASE clone for both DOS and Windows, written in assembler, which was planned to ship in 1992. By early 1992 it became clear that Ashton-Tate was in difficulties on developing Windows versions of their products and so Borland switched plans, instead acquiring the company and anointing their internal project as the official successor. Part of the Ashton-Tate acquisition was the InterBase rdbms and it was decided that Paradox/W should be able to work with InterBase as well as the Paradox engine, and this led to the creation of an IDAPI engine based around InterBase.