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【判断题】
数字信号是指具有时间上和幅度取值上离散的信号A.
正确
B.
错误
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【简答题】What are the two disadvantages associated with database systems?
【多选题】What are some problems with using traditional relational database management systems?
A.
Software licensing
B.
Providing enough access to the database during peak demand times
C.
Planning ahead for how the database will be used in the future
D.
Provisioning the database for periods of high demand, but then rarely having high demand
【简答题】Database is similar to a data file in that it is a storage place for data. Like a data file, a database does not present information directly to a user; the user runs an application which accesses dat...
【判断题】MMDBMSs are not able to support the ACID properties known from conventional database systems.
A.
正确
B.
错误
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