I saw one module folders and files in magento connect. in that only **etc, Helper, & Module** folder is present.

but there is no **sql** folder. but still that modle created a text box in backend , so  that we can enter the zip codes in textfield and its going to be save in database.

so what is the reason behind that table. also how to find what is name of table craeted by that module ?

[![enter image description here][1]][1]


  [1]: https://i.sstatic.net/VL1AZ.png