The column name in the database this property or field maps to.

Used to override the Type of the column in the database for INSERTs/UPDATEs. The data in the property/field this attribute is applied to will be converted to this Type for INSERTs/UPDATEs. If null, the same Type of the property/field will be used instead. (NOTE: This does NOT affect the Type when fetching/SELECTing data from the database.)

When implemented in a derived class, gets a unique identifier for this Attribute.