Column Object (Model Designer)
Defines the column to which an entity or attribute is bound. This object inherits properties from the Binding object.
The name of the table in the physical data source which contains the column. For attributes of entities bound to tables, TableName defaults to the name of the table. Otherwise, you must specify a TableName.
The name of the column in the physical data source to which the entity or attribute is bound. Note that this name must be the name of a column in the table. If this is a binding for an entity, the column cannot be a binary column. Also, the string cannot be an empty string.