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How can one set some attribute in Entity (Entity Framework) to be unique? One possibility would be to make it primary key but that's not what I want.
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You can avoid duplicate values by setting an index property to yes and u can do this by right clicking a particular entity and click edit entity and set the index property to yes.
Entity framework doesn't support unique keys so the only way is to set the unique constraint / index in the database. It will not ensure uniqueness in the application when you try to insert / update records but the exception will be fired if you try to save non unique value to the database.
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