Figuer: -Assuming That We Do Not Use the Rule(s)that Avoid Null

question 25

Multiple Choice

Figuer:
-Assuming that we do not use the rule(s) that avoid null values in tables in converting the ERD diagram to a relational database,Deptno appears as a foreign key the following number of times:

• A) 3
• B) 4
• C) 5
• D) 6

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Definitions:

Vertebrates

Animals that possess a backbone or spinal column, including fish, amphibians, reptiles, birds, and mammals.

Reptiles

A group of cold-blooded vertebrate animals characterized by scales or scutes, laying shelled eggs, and breathing air, including snakes, lizards, crocodilians, and turtles.

Clade

A group of organisms believed to comprise all the evolutionary descendants of a common ancestor.

Ancestral Traits

Characteristics that appeared in common ancestors and are passed down to subsequent generations.