Relational Database Relationships Updated

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Need more help with your HSC study? Check out my new digital study guides here: • https://www.maximumeducation.com.au • In understanding Relational Database Relationships, we will use a Movie Rental Database schema that contains all three types of relationships: • One to One Relationship • A single record in one entity is only referencing a single record in another entity, and that same record within the other entity is only referencing that same single record. • One to Many / Many to One Relationship • A single record in one entity may reference multiple records in another entity, though within the other entity the records may only reference a single record of the initial entity. • Many to Many Relationship • Records in both entities may reference multiple records in each other’s entities. Though an intermediate entity is required known as a junction to compile the multiple records.

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