schema in Oracle

开发者_JAVA技巧I want to know is there any software design the schema of oracle database?I mean if you work with Microsoft Sql U can easily design your database ,see the relation ,all tables and their fields,I want to know is there any software do same work in oracle.

I already try to find it in oracle Developer but nothing found!

Take a look at Oracle SQLDeveloper, I think it provides such functionality.

Not free, but PowerDesigner, Embarcadero, ERWin... can be used for that.

Toad also does this Toad for Oracle - Freeware