If you use a database (tables) on a shared network, you can enhance efficiency by setting a number of properties of the TSession component. The TSession component manages a database session. First of all, Session.PrivateDir should be assigned to a local directory, like C:\WINDOWS\TEMP (you can do this in the OnCreate event of your DataModule, for example). The PrivateDir will contain the result of a local Query (which is a table in itself), and a local table is of course much faster than a table on the network (LAN or otherwise).