Identify a model that is said to be a semantic data model?

Group of answer choices

A$.$ Entity$-$relationship

B$.$ Hierarchical

C$.$ Object$-$oriented

D$.$ network

Flag this Question

Question $121$ pts

In which of the following models can a parent has many children, but each child can have only one parent?

Group of answer choices

A$.$ Entity$-$relationship model

B$.$ Hierarchical model

C$.$ Network model

D$.$ Relational mode

Flag this Question

Question $131$ pts

All primary keys should be unique. Which of the following is a restriction to primary keys?

Group of answer choices

A$.$ It cannot be a candidate key

B$.$ It cannot be a foreign key

C$.$ It cannot be Null

D$.$ It cannot be zero

Flag this Question

Question $141$ pts

In the context of a database table, each value in column A determines one and only one value in column B$.$ What concept is this?

Group of answer choices

A$.$ Functionally dependent

B$.$ Determination

C$.$ Logically dependent

D$.$ Relations

Flag this Question

Question $151$ pts

A foreign key contains a value, and the value refers to an existing valid row in another relation. What type of integrity is exhibited in this case?

Group of answer choices

A$.$ Direction

B$.$ Referential

C$.$ Relations

D$.$ Uniqueness

Flag this Question

Question $161$ pts

Which of the following is perceived as a two$-$dimensional structure composed of rows and columns?

Group of answer choices

A$.$ Attribute

B$.$ Intersection

C$.$ Rowset

D$.$ Table

Flag this Question

Question $171$ pts

While creating a database, a developer uses C$\_$NAME to label customer name in a Customer table, and also use C$\_$NAME to label consultant name is a Consultant table. What word describes this act?

Group of answer choices

A$.$ Homonym

B$.$ Duplicate

C$.$ Relation

D$.$ Synonym

Flag this Question

Question $181$ pts

In the context of a database table, if you know the value of attribute A$,$ you can look up the value of attribute B$.$ What is the name of this concept?

Group of answer choices

A$.$ Container

B$.$ Determination

C$.$ Owns

D$.$ Relations

Flag this Question

Question $191$ pts

You intend to retrieve only the students that have fully paid the study fees for both first and second semester for a study year from a school database. Assume that there are two tables, one for each semester. Which relational operator will provide the results you need?

Group of answer choices

A$.$ Intersect

B$.$ Select

C$.$ Difference

D$.$ Restrict