Hello,
It is my understanding you want a web app in MVC that allows to chose a database and within this database all schemas for all tables add extended properties.
This, it is one page containing:
Server name, User name, Password (sql server authentication - only!), database name.
If the connection did not work - message says "did not connect"
If the user has no privileges (DBO Level) -message says no priviledges
If the database does not exist - message says - no database.
THe button will start the process of adding extending properties.
I need at least two days (maybe more) to write the functional and let you test it.
If no need for the connection - 1 day.
I will ask you to deposit money upfront into Escrow.
Please, notice that I passed SQL certification with honors.
Looking forward working with you,
Virginia