Question: Define the following terms: data model, database schema, database state, internal schema, conceptual schema, external schema, data independence, DDL , DML , SDL , VDL

Define the following terms: data model, database schema, database state, internal schema, conceptual schema, external schema, data independence, DDL, DML, SDL, VDL, query language, host language, data sublanguage, database utility, catalog, client/server architecture, three-tier architecture, and n-tier architecture.

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