Q1. Entity Relationship Model Warming up [3 points] Consider the fo.pdf

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Q1. Entity Relationship Model : Warming up [3 points] Consider the following schema: Lecturer (LID, Name, Address, Age, Salary) Student (SID, Name, Address, Age, Phone, Course) - EID is part of a composite primary Course (CID, Name, LID, Department) Department (DID, Name, LID, CID ) Instructions : i. A lecturer can teach many courses and each course is taught by one or more lecturers. But, sometimes a lecturer may not teach any course at all. j. A lecturer can be assigned to exactly one department but each department can have one or more lecturers. 1. Draw an ERD Diagram to illustrate the above information or schema. 2pts 2. Discuss three integrity rules in your data model and demonstrate how these were applied in your ERD (1PT).

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