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Consider the following relation schemas: Emp (eid: integer, ename: string, age: integer, salary: real) Works (eid: integer, did: integer, pct_time: integer) Dept (did: integer, dname: string, budget: real, managerid: integer) (a) Write the SQL statements required to create the preceding relations, including appropriate versions of all primary and foreign key integrity constraints. (b) Define the Dept relation in SQL so that every department is guaranteed to have a manager.

Consider the following relation schemas: Emp (eid: integer, ename: string, age: integer, salary: real) Works (eid: integer, did: integer, pct_time: integer) Dept (did: integer, dname: string, budget: real, managerid: integer) (a) Write the SQL statements required to create the preceding relations, including appropriate versions of all primary and foreign key integrity constraints. (b) Define the Dept relation in SQL so that every department is guaranteed to have a manager.

Database Systems: Design, Implementation, & Management
Database Systems: Design, Implementation, & Management
12th Edition
ISBN:9781305627482
Author:Carlos Coronel, Steven Morris
Publisher:Carlos Coronel, Steven Morris
Chapter2: Data Models
Section: Chapter Questions
Problem 11P
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Consider the following relation schemas: Emp (eid: integer, ename: string, age: integer, salary: real) Works (eid: integer, did: integer, pct_time: integer) Dept (did: integer, dname: string, budget: real, managerid: integer) (a) Write the SQL statements required to create the preceding relations, including appropriate versions of all primary and foreign key integrity constraints. (b) Define the Dept relation in SQL so that every department is guaranteed to have a manager.
Transcribed Image Text:Consider the following relation schemas: Emp (eid: integer, ename: string, age: integer, salary: real) Works (eid: integer, did: integer, pct_time: integer) Dept (did: integer, dname: string, budget: real, managerid: integer) (a) Write the SQL statements required to create the preceding relations, including appropriate versions of all primary and foreign key integrity constraints. (b) Define the Dept relation in SQL so that every department is guaranteed to have a manager.
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