Zoho Creator - Development

Zoho Creator - Development

Dear all,

I'm new to Zoho. This is in regard to Zoho Creator and Extension development.

1) In the Zoho Marketplace, there are many Extensions (and custom apps) available for sale. I'm wondering what programming language is used in Extension development? Is it also "Deluge" ?

2) With Zoho Creator, can you do event driven programming, like those in MS Access?

3) With Zoho Creator, can you go into the database and change table or field properties?

Thank you very much in advance.