You can specify which dimension members and cube cells a role can view and update 您可以指定角色可以對(duì)哪些維度成員和多維數(shù)據(jù)集單元進(jìn)行查看和更新。
Drill through to retrieve the detailed data from which the data in a cube cell was summarized 預(yù)編譯transact - sql語(yǔ)句的集合,這些語(yǔ)句存儲(chǔ)在一個(gè)名稱下并作為一個(gè)單元來(lái)處理。
Recently proposed quotient cube addressed this issue through a partitioning method that groups cube cells into equivalence partitions 最近提出quotient數(shù)據(jù)立方體采用劃分的方法解決了這個(gè)由于數(shù)據(jù)量太大而導(dǎo)致計(jì)算效率難以提高的問(wèn)題。
The calculate command controls the aggregation of the cells in the cube and you should edit this command only if you intend to manually specify how the cube cells should be aggregated Calculate命令控制多維數(shù)據(jù)集中的單元的聚合,應(yīng)當(dāng)只在需要手動(dòng)指定多維數(shù)據(jù)集單元應(yīng)當(dāng)如何聚合時(shí),才編輯此命令。
Unfortunately , as changes are made to the data sources , maintaining the quotient cube is non - trivial since the partitioning of the cube cells must also be updated . in this paper , the authors design incremental algorithms to update a quotient cube efficiently for both sum and median aggregate functions 然而,當(dāng)數(shù)據(jù)源發(fā)生改變的時(shí)候, quotient數(shù)據(jù)立方體很難進(jìn)行維護(hù),尤其是針對(duì)median這樣的非分步型聚集函數(shù),因?yàn)楫?dāng)插入新的元組時(shí), quotient數(shù)據(jù)立方體中的等價(jià)類有的需要進(jìn)行拆分,有的還需要重新生成。