Question: 23. What is the difference between a base entity type and a weak entity type? When is a weak entity type used in data modeling?

23. What is the difference between a base entity

23. What is the difference between a base entity type and a weak entity type? When is a weak entity type used in data modeling? 26. The instance diagram shown here illustrates the relationship between Sullivan Insurance Agency's agents and clients. Using this instance diagram, write the narrative that describes the relationship between agents and clients. Your narrative should include a description of both the cardinality ratio and participation constraints implied in the instance diagram. In addition, draw the ER diagram that fully describes the relationship between the company's agents and clients. CLIENT Policy n AGENT c1 a1 r2 c2 r3 a2 3 14 a3 4. r5 0 a4 r6 Instance Diagram for Sullivan Insurance Agency

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