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Database Funtionality

hello guys,

i am still new in using bubble.io,

so i have a few question to ask about it. In bubble :

a) Is it possible to have database functionality in the cloud (or on-premises)?
b)Is it possible to pre-restrict data entry with features like Excel’s "validation rules?
c)Is it possible to design print forms freely?
d)Can data be linked to external engines such as [MS-Office] and [Adobe Reader]?

These are some topics that i am wondering about,