【单选题】【消耗次数：1】
数据库DB、数据库系统DBS、数据库管理系统DBMS之间的关系是（ ）
①
DB包含DBS和DBMS
②
DBMS包含DB和DBS
③
DBS包含DB和DBMS
④
没有任何关系
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相关题目
【单选题】
数据库（DB）、数据库系统（DBS）和数据库管理系统（DBMS）三者之间的关系是( )。
①
DBS包括DB和DBMS
②
DBMS 包括DB 和DBS
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