aThe data in the warehouse must be available to the organization's staff if the data warehouse is to be useful.There are a very large number of software applications that perform this function,or reporting can be custom-developed.Examples of types of reporting tools inculde: 如果数据仓库是有用...
数仓经典书籍阅读之旅第一站,是 William H.Inmon 的《Building the Data Warehouse》(数据仓库 第四版) 系列文章可跳转: 木棉:大数据领域知识地图(持续更新)12 赞同 · 0 评论文章 第1章:决策支持系统的发展 数据仓库的演化 自然演化式体系结构 20世纪70年代,磁盘存储器出现,或者称之为直接存取存储设备(Direct ...
前言#这篇笔记的主要内容来至于 The Data Warehouse Toolkit,该书可以称为数仓建模的圣经什么是星型模型#以一个业务事实为主表。比如一笔订单就是一个业务事实。订单有商品的SKU信息,销售市场信息,日期信息 ,…
This is the latest in “Troubleshooting the Data Warehouse” series. The goal of this series is to not only help you troubleshoot specific issues you may be experiencing but also teach you more about the data warehouse. For a complete list of posts in t...
Discusses the data warehouse as a collection of operational and external information for strategic decision-making and competitive business advantage. `First generation' definition for data warehousing; Data warehouse systems flow; Factors in implementing a phased approach ...
systems are where the data is put in, and the data warehouse is where we get the data out. 操作型数据库侧重是把数据放进去哪里,而数据仓库侧重是从哪里获得数据。 --Goals of a Data Warehouse 1 The data warehouse must make an organization’s information easily accessible. ...
[translate] aFinancial supervision was of the top-down form. 财政监督是自上而下的形式。 [translate] aThe data stored in the data warehouse goes through a lot of severity before it is stored in the warehouse. 在它在仓库之前,被存放在数据仓库存放的数据审阅很多严肃。 [translate] ...
While data in the data mart certainly relates to data found in the operational level or the data warehouse, the data found in the departmental or data mart environment is fundamentally different from the data found in the data warehouse environment, because data mart data is denormalized, summariz...
ArchivaldataDatacurrentlycontainedintheoperationalenvironmentOngoingchangestothedatawarehouseenvironmentfromthechanges(updates)thathaveoccurredintheoperationalenvironmentsincethelastrefresh 6 Howtoscansourcedata? Loadingdataonanongoingbasispresentsthelargestchallengetothedataarchitect.Scanningexistingfiles,then,...
In order to manage the data warehouse, which is primarily used by reporting, you must perform maintenance tasks on data warehouse jobs. For example, you can view their status, pause and resume, set a schedule, enable and disable schedules, and troubleshoot data warehouse jobs. You can perform...