It emulates serial transaction execution, as if transactions had been executed one after another, serially, rather than concurrently.
它要求事务序列化执行，事务只能一个接着一个的执行，但不能并发执行。
We analyzed the relationship between the scalability and the execution time, and the relationship between the scalability and serial performance.
深入分析了可扩展性与执行时间、可扩展性与单机性能之间的关系。
The results show that if the execution time or serial performance is emphasized unilaterally, there may be some bad effects on the scalability.
结果表明：如果片面强调执行时间或单机性能，可能会对可扩展性带来不利的影响。
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