Depends on your goal. If you want to learn a lot about development, write a lot of code, you can use flat files and treat them as a small database. Implement s

Depends on your goal. If you want to learn a lot about development, write a lot of code, you can use flat files and treat them as a small database. Implement simple SQL analogues of WHERE, etc. It could definitely be fun to implement! A lot of educational value. You would learn more about designing APIs consumed by other applications, etc. But if you just want something that would run on r-pi, you would be better off by using a standard database. Some of them are around for over a decade, written in C and thousands of men hours were spent on optimizing them. As long as you are not doing something a bit crazy (e.g. 3 fields in WHERE statement, non of them are indices), you will be just fine.