Ontology A logical relationship of elements participating in a taxonomy
Operating system The technology that controls the computer and all its operations
Operational BI Analytic processing based on data generated by operational processing
Operational environment The processing center where day-to-day transactional
processing is supported
Operational system A system that manages and executes the transactions used in the
day-to-day operations of the organization
Operations The department charged with running the computer environment
Optical disk A storage medium using lasers rather than magnetic devices
Oracle A large database vendor
Oxide The surface of the storage medium where bits are stored
Page A basic unit of storage in DASD
Paper tape A very early form of storage
Parallel I/O In a nonmainframe environment, when more than one processor does I/O at
the same time, it is called parallel I/O
Parallel management of data The processing approach where multiple machines are run
in tandem with each other so that the elapsed processing time is reduced
Parameter An elementary data value used as a criterion for qualification of data
Parent/child relationship A hierarchical relationship of data for every parent node,
there can be from 0 to n children nodes.
Pareto chart A method of displaying data values over time and classification
Parity check A means of ensuring the quality of data at the lowest level of storage
Parsing The process of reading text and finding contextualized value that resides in the
text
Glossary