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Author Question: The database requirement that foreign keys must be null or have a value corresponding to the value ... (Read 85 times)

rl

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on: Apr 8, 2019
The database requirement that foreign keys must be null or have a value corresponding to the value of a primary key in another table is formally called the
◦ entity integrity rule.
◦ referential integrity rule.
◦ unique primary key rule.
◦ foreign key rule.
Accounting Information Systems ¦ Romney, Steinbart ¦ 14th Edition
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Marked as best answer by rl on Apr 8, 2019

juliaf

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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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rl

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Reply #2 on: Apr 8, 2019
TY


juliaf

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


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