A 3.2.2 Worksheet
How to determine Cardinality (Maximums) and Modality (Minimums): To understand a relationship, you must look at it from both sides. Pretend you are one of the entities and look at the other. The Golden Questions: This worksheet builds ERDs in two stages. Parts 2 and 3 work at the conceptual level: entities and the relationships between them, with cardinality and modality, but no attributes, keys or data types. Part 4...