Question: fffaaaassstttt allows users to define the DB, usually through Data Manipulation Language (DML), which allows users to specify the data types and structures and constrains

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allows users to define the DB, usually through Data Manipulation Language (DML), which allows users to specify the data types and structures and constrains on the data to be stored in the DB. The is a language that allows the DBA to describe and name the entities, attributes, and relationships required. A major objective for the 3-level architecture is to provide which means that upper levels are unaffected by changes to lower levels. provides description of data to enable program-data independence

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