Aqua Data Studio: is a database query tool and administration tool that allows developers to easily create, edit, and execute SQL scripts, as well as browse and visually modify database structures. Aqua Data Studio provides an integrated database environment with a single consistent interface to all major relational databases. This allows the database administrator or developer to tackle multiple tasks simultaneously from one application.
I like very much this mature product it’s one of my favorites because of my heterogeneity of databases used in my projects ..
I hove you’ll give it a try .. and apreciate it like I do.
Liviu Nastasa 
The free version is a very good and useful one. Give it a try.