Exam 2: Data Models

From a database point of view,the collection of data becomes meaningful only when it reflects properly defined_____.

The data model is said to be a semantic data model.

The relational model's foundation is a mathematical concept known as a .

Which of the following is a disadvantage of the hierarchical data model?

NoSQL databases:

In the model,the basic logical structure is represented as an upside-down tree.

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

Each row in the relational table is known as a(n).

The hierarchical data model was developed in the .

Database designers determine the data and information that yield the required understanding of the entire business.

A(n)is the equivalent of a field in a file system.

A(n)enables a database administrator to describe schema components.

VMS/VSAM is an example of the .

A(n)is the conceptual organization of an entire database as viewed by a database administrator.

Each column in a relation represents a(n).

Business rules must be rendered in writing.

Which of the following is true of NoSQL databases?

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

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

The relational data model was developed in the .