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-# Taken from Tom Nurkkala's Youtube Video on Object-RElational Mapping, which uses KnexJS and ObjectionJS to demonstrate
-# Basic SQL relationships
-
-Models in relation
-    source: model containing relationMappings definition
-    related: model at other end of relation
-
-Relation        Attribute                   FK(s) in
-One-toMany      BelongsToOneRelation        Source
-                HasManyRelation             Related
-
-Many-to-Many    ManyToManyRelation          Source
-
-One-to-One      BelongsToOneRelation        Source
-                HasOneRelation              Related
-                HasOneThroughRelation       Join table
-
-See video at around 48:00 for further details.
-Also look up Database Relations and also ObjectionJS docs for further details on each one.