ITPEC IP October 2019 Question 29
ITPEC IP October 2019 — Question 29 of 100
An E-R diagram consists of entities and relationships, and relational tables are designed from that model. The diagram captures the business objects and how they are associated before they are mapped to tables, primary keys, and foreign keys.
Answer (c)
Why not others:
- instances are individual occurrences of entities, not the structural connector in an E-R model
- a flowchart represents processing flow rather than a relational data model
- functions are not the database structures designed from an E-R diagram
Key rule: Conceptual modeling uses entities and relationships; logical relational design converts them into tables and keys.
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