Question: List: The primary key for each relation The candidate keys (if any) for each relation The foreign keys (if any) for each relation The domain

List:

  • The primary key for each relation
  • The candidate keys (if any) for each relation
  • The foreign keys (if any) for each relation
  • The domain of each attribute
  • Two semantic constraints

Assignment (employee, department, dateAssigned, role)

Employee

Department

DateAssigned

Role

54546677

EMM

01/15/2011

Supervisor

54546677

EMM

02/25/2013

Doctor

77881234

OPR

02/15/2010

Supervisor

77881234

OPR

01/20/2000

Doctor

77881234

EMM

02/20/1999

Doctor

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