Higher Design Relationships and entity relationship diagrams Designing queries and establishing a data dictionary are important and attributes and relationships should be clearly defined.

Occasionally one sees an entity-relationship diagram (ERD) having an unusual characteristic. The unusual element is an entity (or more than one) that seems to have a relationship with every other ...

National 5 Design Relationships and entity relationship diagrams Designing queries and establishing a data dictionary are important. Decisions should be informed by the Data Protection Act.