Question
Consider the following relations: Emp(E_id: integer, E_name: string, Age: integer, Salary: real) Works(E_id: integer, Dep_id: integer, affectation: date) Dept(Dep_id: integer, Dep_name: string, budget: real, Manager_id:
Consider the following relations: Emp(E_id: integer, E_name: string, Age: integer, Salary: real)
Works(E_id: integer, Dep_id: integer, affectation: date)
Dept(Dep_id: integer, Dep_name: string, budget: real, Manager_id: integer)
What referential integrity constraints exist between these relations?
What are the options for enforcing these constraints when a user attempts to delete a Dept tuple?
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Database Theory And Application Bio Science And Bio Technology International Conferences DTA And BSBT 2011 Held As Part Of The Future Generation In Computer And Information Science 258
Authors: Tai-hoon Kim ,Hojjat Adeli ,Alfredo Cuzzocrea ,Tughrul Arslan ,Yanchun Zhang ,Jianhua Ma ,Kyo-il Chung ,Siti Mariyam ,Xiaofeng Song
2011th Edition
3642271561, 978-3642271564
