I would imagine your best bet is to speak directly to SAS about a solution for this. They have various packages where you can get reports, and edit data. It would probably be easier than building your own solution which would need security, the interfaces, the back end database/store, plus the required licenses. True the package wil cost, but is it more or less than all that effort yourself?
Also, why not use a database? Even something free you should be able to link in a database to a web page front end, bit of PHP script.
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