Chapter 1 Flashcards
What is concurrency in a database?
The ability of the database to allow multiple users access to the same record without adversely affecting transaction processing.
What is a data element?
A single fact or piece of information.
What is data inconsistency?
A situation where various copies of the same data are conflicting.
What is data isolation?
A property that determines when and how changes made by one operation become visible to other concurrent users and systems.
What is data integrity?
Refers to the maintenance and assurance that the data in a database are correct and consistent.
What is data redundancy?
A situation that occurs in a database when a field needs to be updated in more than one table.
What is a database approach?
Allows the management of large amounts of organizational information.
What is database management software?
A powerful software tool that allows you to store, manipulate and retrieve data in a variety of ways.
What is a file-based system?
An application program designed to manipulate data files.
