基本上，您必须将您的计划、希望，和想像与实际比较。

Essentially, you have to compare your plans, hopes, and visions with reality.

youdao

但是，如果怀疑结果应该少于或者多于5行，您可以确定“实际基数”并将其与访问计划中的“估计基数”比较。

However, if you suspect that the result should be less or more than 5 rows, you can determine and compare the "real cardinality" with the "estimated cardinality" in the access plan.

youdao

您可以调查趋势，当您学习如何将您的计划的时程规划与实际相比较时应该能够改进您的项目计划和时间进度安排。

You can examine trends, and should be able to improve your project planning and scheduling as you learn how your projected timeframes compare to actuals.

youdao