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New Perspectives on Microsoft Access 2013, Introductory 1st Edition by Joseph Adamski ,Kathy Finnegan ,Sharon Scollard
النسخة 1الرقم المعياري الدولي: 978-1285099217New Perspectives on Microsoft Access 2013, Introductory 1st Edition by Joseph Adamski ,Kathy Finnegan ,Sharon Scollard
النسخة 1الرقم المعياري الدولي: 978-1285099217 تمرين 25
Figure A-24 shows the Employee, Position, and Employment tables with primary keys EmployeeNum, PositionID, and both EmployeeNum and PositionID, respectively. Which two integrity constraints do these tables violate and why?
Figure: Integrity constraint violations
Figure: Integrity constraint violations
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موثّق
Following are the two integrity constrai...
New Perspectives on Microsoft Access 2013, Introductory 1st Edition by Joseph Adamski ,Kathy Finnegan ,Sharon Scollard
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