FiltersDone

Question type

Essay

Multiple Choice

Short Answer

True False

Matching

Exam 2: Data Models

Show Answer

Share

---

All types

Filters

Study FlashcardsPractice ExamLearn

Question 1

Multiple Choice

Review LaterAdd Note

Review Later

The ____ model uses the concept of inheritance.

A) relational
B) network
C) object-oriented
D) entity relationship

E) A) and B)
F) All of the above

Correct Answer

verified

C

Question 2

Multiple Choice

Review LaterAdd Note

Review Later

The hierarchical data model was developed in the ____.

A) 1960s
B) 1970s
C) 1980s
D) 1990s

E) A) and C)
F) None of the above

Correct Answer

verified

Show Answer

Question 3

Multiple Choice

Review LaterAdd Note

A(n) ____ is a restriction placed on the data.

VMS/VSAM is an example of a(n) ____.

A noun in a business rule translates to a(n) ____ in the data model.

Describe the three parts involved in any SQL-based relational database application.

A(n)____________________ in a hierarchical model is the equivalent of a record in a file system.

____ are normally expressed in the form of rules.

The terms data model and database model are often used interchangeably.

In ____________________,relationships are represented by a diamond connected to the related entities through a relationship line.

One of the limitations of the ____ model is that there is a lack of standards.

The entity relationship model is limited to conceptual modeling,with no implementation component.

A manager and a programmer usually have the same view of the same data.

What components should an implementation-ready data model contain?

Each column in a relation represents a(n)____________________.

When you can change the internal model without affecting the conceptual model,you have ____________________ independence.

The ____ model uses the term connectivity to label the relationship types.

A verb associating two nouns in a business rule translates to a(n) ____ in the data model.

The relational data model was developed in the ____.

Business rules apply to businesses and government groups,but not to other types of organizations such as religious groups or research laboratories.