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Author Question: Describe the reason why it is acceptable to have null foreign key, but it is unacceptable to have a ... (Read 58 times)

rosent76

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on: Apr 8, 2019
Describe the reason why it is acceptable to have null foreign key, but it is unacceptable to have a null primary key. Use the concept of entity integrity rule and referential integrity rule in your answer.
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Marked as best answer by rosent76 on Apr 8, 2019

matt95

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Reply #1 on: Apr 8, 2019
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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rosent76

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Reply #2 on: Apr 8, 2019
TY


matt95

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Reply #3 on: Apr 8, 2019
You're welcome


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