If a Relationship Exists Among Three or More Entities,then

question 122

Multiple Choice

If a relationship exists among three or more entities,then:

• A)recursive relationships must be established through the use of recursive foreign keys
• B)a separate relation with a primary key that is the composite of the primary keys of each of the participating entities is created
• C)separate relations are established for each class and for each of the subclasses
• D)use the primary key of relation A as a foreign key in relations B and C

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Definitions:

Speed Up

To increase the rate or velocity of an object or a process.

Activation Energy

The lowest level of energy required by reactants to partake in a particular chemical process.

Catalysts Function

The role performed by substances that speed up chemical reactions without themselves being consumed or altered permanently.

Collisions

Events where two or more bodies exert forces on each other for a relatively short time, often changing their motion due to the impact.