In the Following Shorthand Representation of a Database, the Underlined

question 4

Multiple Choice

In the following shorthand representation of a database, the underlined items are _____. INVOICES (INVOICE_NUM, INVOICE_DATE, CUST_ID)
INVOICE_LINE (INVOICE_NUM, ITEM_ID, QUANTITY, QUOTED_PRICE)
ITEM (ITEM_ID, DESCRIPTION, ON_HAND, CATEGORY, LOCATION, PRICE)

• A) relations
• B) entities
• C) nonkey columns
• D) primary keys

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Definitions:

Low Validity

refers to the situation where a test does not accurately measure what it is supposed to measure, indicating a weak relationship between test scores and the intended construct.

Item Characteristic Curve

A graphical representation that shows the probability of a respondent answering a test item correctly at different levels of ability.

Item Response Theory

A theory and related statistical models that estimate the probability of an individual responding to a specific item on a test, based on the item characteristics and the individual's latent trait level.

Rehabilitation Act

A U.S. federal law that prohibits discrimination on the basis of disability in programs conducted by federal agencies.