faster than 3.1 and a reliable and practical application for many users. R:Base 4.5 rolled out another new file format and greatly improved capacity. OBDC drivers were rolled out to allow interchange of data with Microsoft Windows-based applications without running the DOS-based File Gateway utility. While number of records in a database was "limited only by disk space," in practice, some users found there were problems with databases which contained over about 1.1 million records. First R:BASE for Windows The first product produced by Microrim for use in Microsoft Windows was named R:Base for Windows. This rolled out in 1994. This version was compatible with R:Base 4.5 files and was fully ANSI SQL Level II 1989 compliant. The application was partially ANSI SQL 1992 Level II compliant. The screen capture images in documentation look like Windows 3.1, but documentation claimed it would also run on Windows 95 or the more trustworthy Windows inside OS/2 Warp version 3. A variety of run-time licensing schemes were available to developers. Current Generation R:BASE Products R:BASE 7.6 for Windows R:BASE 7.6 for DOS R:BASE Turbo V-8 for Windows R:BASE 9.1 for DOS R:BASE eXtreme 9.1 (32) for Windows R:BASE eXtreme 9.1 (64) for Windows R:BASE eXtreme 9.5 (32) for Windows R:BASE eXtreme 9.5 (64) for Windows R:BASE X (32) R:BASE X Enterprise (64) R:BASE X.5 (32) R:BASE X.5 Enterprise (64) References External links Proprietary database management systems Fourth-generation programming languages DOS software Windows database-related software 1981 software Relational database management systems