In a Database Containing (Among Others) Five Relations--VENDORS, PURCHASE_REQUISITIONS, PURCHASE_ORDERS

question 84

Multiple Choice

In a database containing (among others) five relations--VENDORS, PURCHASE_REQUISITIONS, PURCHASE_ORDERS, PURCHASE_RECEIPTS, INVENTORY, and EMPLOYEES--you would expect that the attribute Vend_No (vendor number) would be the primary key in the ____ relation.

• A)VENDORS
• B)PURCHASE_ORDERS
• C)PURCHASE_RECEIPTS
• D)EMPLOYEES

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Definitions:

Z-statistic

A measure that describes how many standard deviations an element is from the mean of a population in standardized testing.

Alpha Levels

A threshold value that determines the significance level of a statistical test, representing the probability of rejecting a true null hypothesis (committing a Type I error).

Two-tailed Test

A statistical test that considers the possibility of both positive and negative differences or effects.