Question

2. given the business rule(s) you wrote in problem 1, create the basic crow's foot erd.

Answer 1

To create a Crow's Foot ERD, start by analyzing the problem, then draw a rectangle representing the system, add ovals for events, and use arrows to show the relationships between entities, referencing any provided diagrams for guidance.

Step-by-step explanation:

To create a basic Crow's Foot Entity-Relationship Diagram (ERD) based on the given business rule(s), you would start by following these steps:

1. Analyse the problem to determine the entities that are involved and their relationships. In our case, these could be events like belonging to a club (C) and working part-time (PT).
2. Draw a rectangle to signify the sample space, usually the entire system or database.
3. Within the rectangle, draw circles or ovals to represent the interest events, making sure to overlap them if they share common outcomes.
4. Finally, use arrows with the Crow's Foot notation to indicate the relationships between these entities, including cardinality and optionality attributes that detail how the entities relate to one another.

Remember to reference the diagram, as indicated in your business rule(s), which could be Figure 17.38 or another relevant illustration provided with the problem.