Filters
Question type

Study Flashcards

Students and classes have a relationship.


A) one-to-one
B) one-to-many
C) many-to-one
D) many-to-many

E) A) and C)
F) C) and D)

Correct Answer

verifed

verified

The term is used to refer to the task of creating a conceptual data model that could be implemented in any DBMS.

Correct Answer

verifed

verified

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

Correct Answer

verifed

verified

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


A) entity
B) attribute
C) relationship
D) constraint

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

Correct Answer

verifed

verified

An internal refers to a specific representation of an internal model,using the database constructs supported by the chosen database.


A) tuple
B) schema
C) object
D) value

E) A) and D)
F) A) and C)

Correct Answer

verifed

verified

Which of the following types of HDFS nodes stores all the metadata about a file system?


A) Data node
B) Client node
C) Name node
D) Map node

E) A) and B)
F) A) and C)

Correct Answer

verifed

verified

An implementation-ready data model needn't necessarily contain enforceable rules to guarantee the integrity of the data.

A) True
B) False

Correct Answer

verifed

verified

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

A) True
B) False

Correct Answer

verifed

verified

The external model is the representation of the database as "seen" by the DBMS.

A) True
B) False

Correct Answer

verifed

verified

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


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

E) B) and C)
F) A) and D)

Correct Answer

verifed

verified

What do business rules require to be effective?

Correct Answer

verifed

verified

To be effective,business rules must be e...

View Answer

A(n)is a collection of similar objects with a shared structure and behavior.

Correct Answer

verifed

verified

Within the database environment,a data model represents data structures with the purpose of supporting a specific problem domain.

A) True
B) False

Correct Answer

verifed

verified

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


A) attribute
B) entity
C) relationship
D) constraint

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

Correct Answer

verifed

verified

In the context of data models,an entity is a person,place,thing,or event about which data will be collected and stored.

A) True
B) False

Correct Answer

verifed

verified

The relational model is hardware-dependent and software-independent.

A) True
B) False

Correct Answer

verifed

verified

A(n)is a relatively simple representation of more complex real-world data structures.

Correct Answer

verifed

verified

In an SQL-based relational database,rows in different tables are related based on common values in common attributes.

A) True
B) False

Correct Answer

verifed

verified

The hierarchical model is software-independent.

A) True
B) False

Correct Answer

verifed

verified

The network model has structural level dependence.

A) True
B) False

Correct Answer

verifed

verified

Showing 21 - 40 of 75

Related Exams

Show Answer