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What is Understanding Database Environments about?

This document provides an overview of key concepts in database systems including: - The three-level database architecture comprising the external, conceptual, and internal levels. - The concepts of logical and physical data independence provided by this architecture. - Common database languages including DDL, DML, and DCL. - Popular data models such as relational, network, and hierarchical models. - The functions of a database management system (DBMS) including data storage, concurrency control, and recove

Author

JauharAzka

Language

EN