Can there be any tool in Eclipse comparable with phpMyAdmin? The project is within Java and I wish to use H2 database. I've installed DTP but it's much less user-friendly as phpMyAdmin. I didn't find the best way to produce a table without typing sql query.

you should use squirrel or dbvisualizer. both of them are two software which use the jdbc for connecting on the database, as well as for dbvisualizer ought to be an eclipse wordpress plugin...

Check Quantum plugin for Eclipse. Is really a friendly interface to control databases.

An alternative choice is Eclipse SQL Explorer.