data encryption

What are the Differences between Dynamic data masking and Views in SQL server.?
Varun GaurAsked:
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Ares KurkluSoftware EngineerCommented:
DDM and Views, they somehow serve different purposes. DDM is a security feature which hides data (as the name says masking).

Views just can be used to display different datasets or subsets from one or several tables, they are like virtual tables. You may use them for reporting purpose etc. But as for security purposes, if you don't want to display all the columns to the end user, it may be used that way as well, you can just get a subset of the table and display that information to the user.

DDM can be used to obfuscate sensitive data if a  user has like a read permission to run the query they can still access to the column and query it but they can end up seeing masked data, like if you want to hide the phone numbers they may just see XXXXX.

Again you can create a view from multiple tables/columns and display it, but those columns may be masked as well.
e.g you can have a User table and Company table in a view you can display all users from all companies with some details but both tables
may have a phone column which might be masked even if the user views the information in columns they may see like this:
Id | User | Company | userMobile | companyPhone
1   |Joe |  ABC           | xxxxxxx| xxxxxxxxxxxxxx

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Vitor MontalvãoMSSQL Senior EngineerCommented:
I would say that they are totally different things. Is almost like asking what is the difference from a car seat belt and a car's brake.
You mask data when you for example want to hide sensitive information (customer name, employee salary, patient diseases, ....) when presenting data to somebody out of the organization.
You use a View to create a logic set of data that can be used for example, by your application.
Vitor MontalvãoMSSQL Senior EngineerCommented:
Recommendation to close this question by accepting the above comments as solution.
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