Exam 19: Database Design

arrow
  • Select Tags
search iconSearch Question
flashcardsStudy Flashcards
  • Select Tags

The crow's-foot notation shows the minimum number of entities that can be involved in a relationship.

(True/False)
4.7/5
(38)

Transforming a table into a normal form to remove duplicated data and other problems is called normalizing the table.

(True/False)
4.8/5
(29)

A data model ________.

(Multiple Choice)
4.8/5
(40)

In an E-R diagram,a line is used to represent a relationship between two entities.

(True/False)
4.8/5
(35)

N:M means that more than one entity is allowed on each side of the relationship and that the number of entities on each side can be different.

(True/False)
4.8/5
(27)

Database practitioners classify tables into various ________ according to the kind of problems they have.

(Multiple Choice)
4.8/5
(46)

The easiest time to change the database structure is ________.

(Multiple Choice)
5.0/5
(36)

A database model can be transformed into a database design only after the users have approved and validated it.

(True/False)
4.7/5
(34)

Explain the role of users in designing a database.

(Essay)
4.9/5
(37)

Normalization is the process of combining two or more poorly structured tables into a single structured table.

(True/False)
5.0/5
(31)

Which of the following is a highly popular technique for creating a data model where the developers describe the content of a database by defining the things that will be stored in the database and the relationships among those entities?

(Multiple Choice)
4.7/5
(28)

Because normalized designs can be slower to process,database designers sometimes choose to accept non-normalized tables.

(True/False)
4.8/5
(41)

Which of the following is true for data models?

(Multiple Choice)
4.8/5
(32)

Explain the difference between maximum and minimum cardinality.

(Essay)
4.9/5
(38)

The easiest time to change the database structure is after the database has been constructed and loaded with data.

(True/False)
5.0/5
(32)

The acronym UML refers to ________.

(Multiple Choice)
4.9/5
(43)

A database application consists of forms,reports,queries,and application programs.

(True/False)
4.9/5
(36)

The little lines in an E-R diagram used as shorthand for the multiple lines between two entities are referred to as ________.

(Multiple Choice)
4.8/5
(24)

How is a data model transformed into a database design?

(Essay)
4.8/5
(49)

The process of converting poorly structured tables into two or more well-structured tables is referred to as ________.

(Multiple Choice)
4.8/5
(35)
Showing 21 - 40 of 40
close modal

Filters

  • Essay(0)
  • Multiple Choice(0)
  • Short Answer(0)
  • True False(0)
  • Matching(0)