NPersistence Reference Guide
The JoinTable type exposes the following fields.
XNA Framework Only
.NET Compact Framework Only
(Optional) determines that this join table belongs to an AssociationOverride definition. If populated, this join table overrides a mapping of a relationship. The joinTable element must be specified if a join table is used in the overriding of the mapping of the relationship. The joinTable element must not be specified if a foreign key mapping is used in the overriding of the relationship.
(Optional) The catalog of the table. Defaults to the default catalog.
(Optional) The name of the join table. Defaults to the concatenated names of the two associated primary entity tables, separated by an underscore.
(Optional) The schema of the table. Defaults to the default schema for user.