Linked records are records that have a relationship with another record. For example,
a product record may contain links to accessory products or related products. The records
can be in the same repository or in different repositories. Link relationships can be
"one-to-one" (one record linked to anotherrecord), "one-to-many" (one record linked to more
than one record), or "many-to-many" (records can both have more than one record link to them
and can link to more than one record). A repoistory that contains records linked to another
repository may be referred to as a "linked repository".