- Of the few multiple-db GUIs, 99% (or probably 100%) use JDBC/ODBC layer to connect and work with the databases and JAVA or some other kind of high level toolkit/language to develop the GUI. This results in applications being bulky and slow and never able to provide the speed that a low level C/C++ client API provide and are supported by all of the standard databases.
I am maintaining such an application and it is neither bulky nor slow. It's all a matter of implementation.
Just an example: with the enhanced batching in Oracle's current JDBC driver (yes, I know this is an Oracle list) I can even achieve the same import speed as SQL*Loader when importing flat files.
Btw: coming from a Java world, I do consider HSQLDB and Derby belonging to the list of "standard databases"
Thomas