Hello, I am trying to figure out if it is possible to place certain restrictions on fields in an enterprise geodatabase (SQL Server, ArcGIS Desktop 10.2.2). For example, I have a field that is storing parcel numbers as text. I would like to restrict the field so that values can be no more or no less than 12 characters and can contain only numbers (even though it is a text field). It doesn't seem possible. Any ideas?