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In an organization several projects are undertaken. Each project can employ one or more employees. Each employee can work on one or more projects. Each project is undertaken on the required of client. A client can request for several projects. Each project has only one client. A project can use a number of items and a item may be used by several projects. Draw an E-R diagram and convert it to a relational schema.
The ER Diagram can be converted into the following relational schema. Entity Sets (i) Employee (Empno, Name, Salary, Desig) (ii) Project (P_id, Pname, P-desc) (iii) Item (I_id, Iname, I-desc) (iv) Clients (C_id,Cname, Address) (v) Works_on (Empno, P_id) (vi) Requests (P_id, C_id) (vii) Requires (P_id, I_id)
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