Creates a constraint for the named domain.

    Specify a domain constraint when you create a domain to limit
    which values can be stored in columns based on the domain. Domain
    constraints specify that columns based on the domain contain only
    certain data values or that data values can or cannot be null.

    Use the CHECK clause to specify that a value must be within a
    specified range or that it matches a list of values. When you
    specify a CHECK clause for a domain constraint, you ensure that
    all values stored in columns based on the domain are checked
    consistently.