Reverse question: What tool do you use to get data into the database? Google Forms is great, but if you want the data to go into your own database what tools are available?
I don't use it, but LibreOffice has the Base component that can be a data entry front-end for many ODBC and JDBC supported databases. I think OpenOffice has/had the same.
If you're using Microsoft, you can use MS Access for data entry to similar ODBC and SQL Server backends. If you want to do some VBA programming you can set up a UI in an Excel workbook too.
