Converting a Ternary Relationship into a Relational Database from an E-R

question 22

Multiple Choice

Converting a ternary relationship into a relational database from an E-R diagram ____.

• A) can be done by placing the unique identifier of one of the tables into the others
• B) can be done by creating a single table that combines the attributes of the three entities
• C) requires the creation of an additional table beyond the three that represent the three entities in the relationship
• D) a & b above
• E) a & c above

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Definitions:

Mass

A measure of the amount of matter in an object, usually expressed in grams or kilograms.

Isotopes

Variants of a particular chemical element which have the same number of protons in their nuclei but differ in the number of neutrons, leading to different atomic masses.

Atomic Number

The number of protons in the nucleus of an atom, which defines the chemical element.

Mass Numbers

The total number of protons and neutrons in the nucleus of an atom, indicating its atomic mass.