I am looking for a software platform for prototyping a multi-user database, hosted in a LAN/Server network.

The primary focus is on rapid prototyping of the databases, forms, screens, reports, etc.  over scalable and production grade software platform suite (ie. LAMP)

A little looking around, and I found the similar LibreOffice BASE and HyperSQL (www.hsqldb.org).

Any suggestions, recommendations?

Thank you in advance for the help.

Regards

Brock