A family of Microsoft relational database management systems designed for ease of use.
Microsoft states the Contact template comes with everything and that their templates do not need anything else to function as a template. With that being said, do I need to add "relationships" to the template?
Only if you are modifying the template by the addition of one or more further tables which would need to be related to an existing table or tables in the database. Do you have any such modifications in mind?