操作系统概念第七版中文版 课后习题答案 作者：Abraham Silberschatz Peter Baer Galvin Greg Gagne

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数据库系统概念（Database system concepts）这本书第五版的课后习题答案，每一题都有，exercise是官方的部分答案，其余答案找不到就到sol里去找，都有，很全的

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Practice Exercises 1.1 This chapter has described several major advantages of a database system. What are two disadvantages? Answer: Two disadvantages associated with database systems are listed below. a. Setupofthedatabasesystemrequiresmoreknowledge,money,skills, and time. b. The complexity of the database may result in poor performance. 1.2 List five ways in which the type declaration system of a language such as Java or C++ differs from the data definition language used in a database. Answer:

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