스키마 (1) 썸네일형 리스트형 [DB] Schema, DDL, DML 정리 The goal of Three-schema architecture is to separate the user applications and the physical DB. → 목표 = 사용자 애플리케이션과 물리적 DB를 분리하여 DB의 독립성 확보. Internal schema describes the physical storage structure of the DB. Conceptual schema describes the structure of the whole DB for a community of users. External schema describes the part of the DB that a particular user group is interested in and hides the r.. 이전 1 다음
