Microsoft Access.
I have been developing in Microsoft Access for around 30 years, back in the day it was a great tool, these days there does not seem to be any new work and all of what I have done for the last few years is upgrades and maintenance of existing systems.
Microsoft Access has been a great tool for delivering basic applications without too much technical knowledge, these days switching out the back end to a SQL Server database retaining the Microsoft Access front end seems a common way to go.
I became Qualified in Microsoft Access 2.0 then Microsoft Access 95, I have used every version since.
These days lots of clients want to reskin their Microsoft Access database to give it a web front end, this is not without it's complexities as the queries Microsoft Access can produce can be incompatible with some databases, the same is true of the reports, in both cases re-writing those queries and reports from scratch is the only sensible way forward.
I do a lot of maintenance of Microsoft Access systems, moving databases from server to server, relinking tables etc.
Whilst there is upsizing tools for Microsoft Access that allow the back end to be swapped for Microsoft SQL Server, there is more to consider, once the data is stored in Microsoft SQL Server you have options to put a web front end on parts and publish that, this is not an all or nothing option, you can just publish the sections you need.