Online Documentation for SQL Manager for Oracle
Viewing object DDL structure
The DDL (Data Definition Language) tab displays the SQL statements for creating the object with all its subobjects (if there are any). This text is read-only. If you want to change the object definition, use the appropriate editor tabs instead, or copy the text to the Windows Clipboard and paste it in the Query Data or Execute Script Editor.
Hint: If more convenient, you can use the Save DDL to file and Open DDL in Execute script items available on the DDL pane within the Navigation bar of object editors.