Case: you know the table name and you want to find the transaction code or maintenance view which could be used to maintain entries for that table
For example the table name: TB039A
1. use tcode SM30, click customizing button. In the pop up dialog, click "Continue w/o Specifying Project":
2. Now you have already seen the customizing activity which could allow you to maintain table entries.
If you still need to know the maintenance view name, please continue with Edit->Display IMG Activity:
click tab "Maint.objects":
The Customizing Object V_TB039A is the maintenance view we are looking for.