10 Questions
Define a Field or data item and provide an example.
A Field or data item represents an attribute of some entity. Example: Salary, Job Title.
What is the type of relationship for the Hierarchical structure in databases?
The type of relationship for the Hierarchical structure is one-to-many.
What are the logical data elements in a database?
Logical data elements include Character, Field or data item, Record, File or table, and Database.
Define a Record and provide an example.
A Record is a grouping of all the fields used to describe the attributes of an entity. Example: Payroll Record with Name, SSN, and Pay Rate.
What are the common database structures?
Common database structures include Hierarchical, Network, Relational, Object-oriented, and Multi-dimensional.
Telecommunication is the exchange of information in any form over networks.
True
Internet is the most widely visible form of Telecommunications in daily life.
True
Network is an interconnected or interrelated chain, group, or system.
True
The formula for the number of connections in a network is $N(N-1)$ or $N^2 - N$.
True
The critical mass is attained when social, political, and economic systems change.
True
Test your knowledge of logical data elements, characters, fields, and data items with this quiz based on Chapter 5 of Data Resource Management. See how well you understand concepts such as records, files, and databases.
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