Chapter 2 quiz data
Business rules apply to businesses and government groups, but not to other types of organizations such as religious groups or research laboratories. True or False
False
Each column in a relation represents an entity. True or False
False
A data model is usually graphical. True or False
True
Business rules are a brief, precise, and unambiguous description of a policy, procedure, or principle within a specific organization. True or False.
True
Business rules must be rendered in writing. True or False
True
In an SQL-based relational database, rows in different tables are related based on common values in common attributes. True or False
True
A(n) _____ is the equivalent of a field in a file system.
attribute
A noun in a business rule translates to a(n) _____ in the data model.
entity
A(n) _____ is anything about which data are to be collected and stored.
entity
In the _____ model, the basic logical structure is represented as an upside-down tree.
hierarchical
A(n) _____'s main function is to help one understand the complexities of the real-world environment.
model
MySQL is an example of the _____.
relational data model
A verb associating two nouns in a business rule translates to a(n) _____ in the data model.
relationship
A(n) _____ is bidirectional.
relationship
