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TDBF is a native dBASE III+, dBase IV and dBase 2k data access component for Delphi, BCB, Kylix, FreePascal. It allows you to create very compact database programs which don't need any special installer programs. The DB engine code is compiled right into your executable.
dBase III database reader for CP/M written in Pascal using xbase3a.inc
Although you can download examples of DBF files readers written in Pascal, none of them compiles with Turbo Pascal 3 for CP/M system. This one uses record data types defined in xbase3a.inc (you can download it e.g. from here: http://annex.retroarchive.org/cdrom/nightowl-004/006A/XBASE3A.ZIP) and provides missing file access layer.
Ripplebase is an attempt at creating a small and lightweight personal data storage application with database-like features. Ripplebase implements primitive journaling mechanisms to speed queries on slow systems, and is targetted at legacy systems.