CIS 370 Ch.5 Databases
Primary key
A _____ is a field or set of fields in a record that uniquely defines the record.
T/F Ans: F
A database scientist is a skilled and trained IS professional who directs all activities related to an organization's database, including providing security from intruders.
T/F Ans: T
A database, a database management system, and the application programs that use the data make up a database environment.
T/F Ans: T
In the relational model, each row of a table represents a data entity or row and each column of the table represents an attribute or field.
T/F Ans: T
The DBMS serves as an interface between an application program and the database.
T/F Ans: T
The relational database model is by far the most widely used.
T/F Ans: F
The relational model described data using a standard tabular format; all data elements are placed in three-dimensional tables called relations.
T/F Ans: T
When organizing a database, key considerations include determining what data to collect, who will have access to it, how they might want to use it, and how to monitor database performance.
A database _______.
helps companies reduce costs, increase profits, track past business activities, and open new market opportunities.
record
A collection of fields all related to a single object, activity, or individual is a(n) ___.
