I’ve written a public domain (that means there are no restrictions on how you use it) database engine in Python. It is very small, about 20k, and it is a single class that will run without adding any other software, module, or technology.

There are presently two versions. The original handles ASCII and integer fields; the newest version, which I presently consider to be beta in that it has not been extensively tested, adds the ability to handle binary, extended character sets, and floating point numbers.

If this is of interest to you, you may learn more about it, and/or download it, on this page.