Database performance depends upon two independent facets.These are数据库性能取决于两个独立的方面。这些是:()?
（A）Hardware and network硬件和网络
（B）Distance to data center and network bandwidth到数据中心的距离和网络带宽
（C）Choice of DBMS and programming language数据库管理系统和编程语言的选择
（D）Number of users and number of tables用户数和表数
（E）Availability and speed可用性和速度 答案解析:
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