The ANSI/SPARC Architecture of a Database Environment. Lecture 2. Schema and instance. database schema the description of the database is called the database schema or intension; specified at the creation of the database not expected to change very often database instance
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Which role within a database environment would you prefer to be in, if you were able to choose? Why? Which activities would you be interested in performing? How would you like to co-operate with the people performing the other roles?