IST359 - The database environment

data

raw unprocessed facts or figures.

information

data that has been processed or interpreted.

metadata

data which describes or gives structure to other data.

data management

the act of processing data (reading, adding, changing or deleting data).

CRUD

the data management operations; create, read, update, and delete

database

a collection of data, metadata and data management activities.

query

asking a question of data; processing information.

DBMS

software to the facilitate the use of computerized databases.

conceptual model

the global view of a database from the user's perspective.

logical model

a view of a database that is depended on a database model, but not a specific implementation.

internal model

a view of a database as implemented.

external model

portions of the database implementation to facilitate the conceptual view.

physical model

how the database is implemented through software, such as a DBMS.

ARTC

characteristics of data that make it useful; accurate, relevant, timely, and contextual.