____ provide(s) a description of the data characteristics and the set of relationships that link the data found within the database.

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 ____ relates to the activities that make the database perform more efficiently in terms of storage and access speed.

A(n) ____ database supports a relatively small number of users (usually fewer than 50) or a specific department within an organization.

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In the ____ model, the user perceives the database as a collection of records in 1:M relationships, where each record can have more than one parent.