data warehouse tutorial

Dimension Modeling Method Dimension modeling organizes information into structs, which typically correspond to the query methods that analysts want to use for data warehouse data. How much food sales were in the northwest in the third quarter of 1999. Represents the use of three dimensions (product, geography, time) to specify the information to be summarized. S

In SVN , our project is not called a project or a folder, but it's called a "warehouse."Steps for building a warehouse:1,Create a code WarehouseL Create a folder under any drive letter (D:\svn\myApp\) as our version of the Coogan directory, such as we need to build a shop project, the current shop can only be counted as a folder, not "warehouse"L Svnadmin Create

1. Users should consider the business scope, responsibilities, and computer performance. 2. Determine what decisions a business user wants to make with the help of a data warehouse 3. Identify the best users who use data warehouses for high-efficiency Decision Making 4. Search for potential new users and let them know about the

In the data warehouse project, ETL is undoubtedly the most tedious, time-consuming, and unstable. If the data source and target are both oracle and meet certain conditions, you can use In the data warehouse project, ETL is undoubtedly the most tedious, time-consuming, and un

MySQL big data warehouse receiving (single table) bitsCN.com MySQL big data warehouse receiving (single table) Recently, I have been studying data warehouse receiving. for the INSERT command, a small amount of

Prior to the deployment of the company BI Project example, found that the database tables are not set the primary key, foreign keys, has been thought to be a simulation project, the reason for not rigorous requirements. Today we know that the Data Warehouse is not designed for primary and foreign keys. These constraints should be done when ETL is programmed to ensure that all

Recently, a friend asked, what are the difficulties in data warehouse development? After several years of development, we talked about data warehouses.TechnologyI personally don't think it is difficult to query and process large amounts of data and ETL processes in a data

With the advent of data warehousing equipment (Warehouse appliance), the potential of business intelligence and advanced analytics applications has been stimulated, and many enterprises will use the advantages of data warehousing technology to enhance their competitiveness. But not to say that integration equipment is omnipotent, it also has many limitations, acc

SQL ServerCategory 4Data warehouse modelingMethods are mainly divided into the following four types. The first type is the three-paradigm modeling of relational databases. We usually use the three-paradigm modeling method to build various types of operational database systems. The second category is the three-paradigm data warehouse modeling promoted by inmon,

Tags: mysql infobright brighthouseInfobright is an open source MySQL Data Warehouse solution, which is based on two development on MySQL, infobright mainly implements a storage engine, but because its own storage logic and relational database is fundamentally different, so, It cannot be directly attached to MySQL as a plug-in like InnoDB, and its logical layer is the logical layer of MySQL plus its own opti

Data Warehouse components: Subject Presentation: Support: 1. product-based Metadata Management Center 2. product-based Data Quality Control Platform 3. the support behind excellent scheduling and job monitoring tools is the cornerstone of entity presentation. Data Warehouse

Demo source code Background I wanted to talk about the background of this article, and later I found that the native word is poor. Therefore, in this topic, we use delegation to implement a global data cache warehouse. This class Library receives four parameters: 1. the Data Type of the data to be stored; 2. the method

In order to set up the Data warehouse in the SS function, there is some controversy in the team. The main focus is on why to provide this function, in the end there is no need for such issues, but ultimately this function is still on. Believe that the initial users will have the same question, I would like to introduce some of the use of data warehousing, but als

We often encounter this problem in the design of the Data Warehouse: If the dimension has only one attribute in the dimension design, is the choice to create a single dimension for this attribute, or will the attribute of that dimension be placed directly in the fact table as part of the fact table?Suppose there is a dimension, which is usually designed with at least two columns (Dimkey and Dimattribute pro

Choosing the right Data warehouse technology is never easy. Whether the traditional enterprise Data Warehouse software or the current very popular data Warehouse integration equipment, how to choose the right solution to meet the

methods, so that the original disk on the large amount of IO overhead and CPU compression work to achieve a better tradeoff. The compression rate is approximately 90%. In addition, Vertica's write data and read data are separated, the read data in a compressed state exists on the disk, the written data is first in mem

Technical Architecture Design of the data warehouse system Author: Cheng Xiaoxu Statement] Because the technical solutions described in this article are derived from online production systems, they will not provide complete and detailed technical solutions, nor provide source code. You are welcome to discuss technical solutions and exchange design experiences. The main function of the

SAP smp-a neglected SAP data warehouse (This is the first blog published by Xu Kun.Http://blog.xukun.com/) It is often heard on various occasions, or even complained by customers in person.SAPBefore providingTechnical materialsIt's too tricky.N + nAfter that, I finally thought it would be more appropriate to write it down.J I declare in advance that this article is intendedSAPUsers or partners. F

Looking at the use of osc@git friends often win, and feel very tall, so have been suffering from phpdesigner use git tutorial. After my 20-minute painstaking research in the morning, I finally got it done! This I can also use Osc@git, daughter-in-law no longer worry about my code! Ha ha! The following text begins: System: Windows7 Simplified Chinese 64-bit Tools: phpdesigner8.x + msysgit + osc@git Msysgit Download Address: http://code.google.co

Each MySQL database server is equipped with a SQL chip, this is the Kickfire company began to look at the Data Warehouse market a vision. Kickfire launched the Kickfire Database Appliance beta, which incorporates new SQL chips on April 14. The company says the SQL chip can extract data directly from memory without the need for registers or caches, thus easing th