您要查找的是不是:
- query cost model 查询代价模型
- The cost model depends on the state of the database server. 成本模型取决于数据库服务器的状态。
- It estimates the execution cost based on an internal cost model. 它会根据内部成本模型来预计执行成本。
- The quantitative cost model had a high interpretative ability. 此计量成本模式具有良好的解释能力。
- In this paper, we use directed-acyclic graph (DAG) to represent a query processing, then define a cost model and a query efficiency model, and finally put forward an algorithm for materialized views selection. 在考虑空间约束的基础上,提出一种物化视图选择方法,并给出了切实可行的算法步骤。
- You can click on the query and see its properties such as SQL statement, query cost, etc. 可以单击查询查看其属性,如SQL语句、查询成本,等等。
- Query cost refers to the estimated elapsed time, in seconds, required to complete a query on a specific hardware configuration. 查询开销是指在特定硬件配置中完成查询所需的估计占用时间(秒)。
- The value means that the query cost would on average drop by this percentage if this missing index group was implemented. 该值表示如果实现此缺失索引组,则查询成本将按此百分比平均下降。
- The cost model based on Euler Histogram isthe focal point of the dissertation. 基于欧拉直方图估算查询结果集大小的代价模型是论文研究的重点。
- Assure estimates are completed in accordance to the ALSTOM full cost model. 确保测算是完全采用ALSTOM的成本模式。
- For more information about the cost model, see Optimizer estimates and histograms. 有关成本模型的详细信息,请参见优化程序预计值和直方图。
- By comparing the BOQ model and ration cost model, the article stands out themerit of the BOQ model. 在此基础上,文章把清单计价与定额计价进行比较总结出工程量清单计价的优越性。
- Finally, the result of bootstrapping approach suggested that the cost model developed by this study had good accuracy in prediction. 最后,拔靴法模拟的结果显示,本研究所建构的成本模型具有良好的预测精确性。
- RESEARCHING EFFECT OF INDEX ON QUERY COST 索引对查询开销影响的研究
- This paper makes an attempt at unifying behavioral economics and neoclassic economicsunder the framework of mental cost model. 论文试图在心智成本范式的框架下把新古典经济学与行为经济学统一起来。
- This paper uses the cost model method to introduce the iteration algorithm of monobasic high power equation which is convenient to use . 结合成本模型法,介绍一元高次方程的迭代解法,便于有关人员采用。
- According to the system of TQM, this paper establishes the environmental quality cost model from the angle of the environmental quality cost. 摘要从环境质量成本的角度借鉴全面质量管理的思想,建立了质量环境成本模型。
- This paper gives an cost model of materialized view.Materialized view selection algorithm and strategy using genetic rules are presented. 论文给出实视图代价估算模型,利用遗传规则,提出实视图选取的方法和策略。
- The cost model for every production period of RMS,the reconfiguration cost model and the lifetime cost model of RMS were constructed. 建立了各生产周期成本模型、重构成本模型与全生产周期成本模型。
- Numerical experiments are present ed and the results show that software cost model based on the testing level refl ect the consumption of the testing resources more realistically. 实验证明该成本模型更符合软件测试的实际情况,软件开发者可以利用该模型实现对测试成本科学的管理。