How Does Different Schema Definition Language Support The Architecture

SOLVED: 2.1. 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, andn-tier architecture.2.3. What is the difference between a database schema and a database state?2.5. What is the difference between logical data independence and physical dataindependence? Which

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