数据库系统概念（第六版英文版）课后习题答案（全）

答案示例：IntroductionPracticeExercises1.1Thischapterhasdescribedseveralmajoradvantagesofadatabasesystem.Whataretwodisadvantages?Answer:Twodisadvantagesassociatedwithdatabasesystemsarelistedbelow.a.Setupofthedatabasesystemrequiresmoreknowledge,money,skills,andtime.b.Thecomplexityofthedatabasem