On an Entity-Relationship (E-R)diagram,anything About Which an Organization Wants to Collect

question 2

Multiple Choice

On an entity-relationship (E-R) diagram,anything about which an organization wants to collect and store information is called

• A) a data model.
• B) an entity.
• C) a schema.
• D) a tuple.

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Definitions:

pKa

A quantitative measure of the strength of an acid in solution, representing the acid dissociation constant on a logarithmic scale.

Diethyl Malonate

An ester of malonic acid used as a reagent in organic synthesis, particularly in the synthesis of various organic compounds including barbiturates and vitamins.

Major Organic Product

The primary product of an organic reaction, generally formed in the greatest amount.

Robinson Annulation

A chemical reaction used to create ring structures in organic chemistry, involving the formation of a six-membered ring by the reaction of a ketone with a methyl vinyl ketone.