SQL Navigator’s editing tools for database objects are visual: they give you a visual representation of a database object definition. Visual object editors allow you to view database object definitions and create or alter database objects via a point-and-click interface, eliminating the need to remember SQL syntax and write SQL statements manually.
The Visual Object Editor command on the View menu gives you quick access to all the object editors.
Opening an object editor from the View menu
You can also open any object for editing by double-clicking it in the DB Navigator tree.
Opening an object editor from the DB Navigator tree