A data warehouse needs to obtain different types of data from different data sources, and convert these huge amounts of data into available data for users, to provide data support for e
ETL concepts
The three ETL letters represent extract, transform, and load, namely, extraction, conversion, and loading.
(1) Data Extraction: extract the data required by the target data source system from the source data source system;
(2) Data Conversion: Convert the
---note---Database Warehouse:1. Theme-oriented2. Data integration (cleanup)3. Time-variant of the database4. The non-volatile nature of data5. Support decision-making systemData Warehouse using parallel structureAdopt a new query optimization strategy and index structureDatabase warehouse conceptual model (
The previous article describes the backup and restore of SVN data in a Windows environment, and this article describes data migration under Linux environments.
A preparatory work
1 Installation Environment
1 CentOS 7
2 available online
2 Software Requirements
1 WinSCP
2 PuTTy
All of our command operations are on top of the putty, and the following is no longer emphasized, because the SVN environment of Linu
Model design of Data Warehouse A. Data Modeling MethodologyThe design of the Data warehouse model follows the design principle of "top-down and gradual refinement".The design of the model is divided into three stages:1 , the conceptual modelThe scope and use of the business,
Original Address http://blog.itpub.net/23659908/viewspace-1118762/
Thank you.
model design of Data Warehouse A. Data Modeling Methodology
The design of Data warehouse model follows the design principle of "top-down and gradual refinement".
Model design is divided into three
Based on the Informix Data Warehouse system implementation methodology, we can divide the implementation of the data warehouse into the following steps:
1. Business Needs analysis
Business requirements analysis is the basis of data war
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
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 applications have the ability to capture large amounts of shared information from multiple decentralized departmental systems. They can effectively transform the original data of the organization into useful knowledge information, so the knowledge information can be used for strategic decision support to improve the enterprise benefit. With the hel
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
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
When foreign banks enter the Chinese market, they often adopt differentiated service strategies, that is, they use standardized products, advanced management and services, and advanced information technology to win local gold customers and then expand the market. This requires domestic commercial banks to strengthen the construction of analytical application systems, strengthen business management and decision-making analysis, understand customer needs and credit risks, and develop new products
What is a data warehouse, and what is the difference between a databaseDataWarehouseis a subject-oriented (Subject oriented), integrated (integrate), A relatively stable (non-volatile), data collection that reflects historical changes (timeVariant) to support management decisions. (1) topic-oriented: Index data in the
The specific database that we create for a program is generally called a transactional database (Transaction), and its data Warehouse (DW) is very different. 1. Transactional databases help people perform activities, and data warehouses help people plan. For example, a transactional database might show which seats on a flight are empty, so passengers can make res
analysis to help policymakers better grasp future trends.
According to these requirements, the information system of national credit securities needs strong backstage support, and it also needs excellent front-end application to help it provide integrated applications, real-time processing, intelligent decision support and other characteristics. Overall, the system needs to accurately understand and grasp the history of the company's business, timely grasp of the current operating conditions,
Book inventory plays an important key business data for warehouse management operations in books. Development at any age now promotes blood circulation in books, book types and update speed are just as fast rising.In order to ensure a foothold in the book industry, to ensure the correct purchase and inventory control and delivery. In order to avoid the backlog of goods, management costs added. However. Trad
Infobright is a column-type database based on a unique proprietary knowledge grid technology. Infobright is open source MySQL Data Warehouse solution, introduced a column storage solution, high-strength data compression, optimized statistical calculation (similar to Sum/avg/group by), Infobright is based on MySQL, but do not install MySQL can also, Because it its
Infobright is a column-type database based on a unique proprietary knowledge grid technology. Infobright is open source MySQL Data Warehouse solution, introduced a column storage solution, high-strength data compression, optimized statistical calculation (similar to Sum/avg/group by), Infobright is based on MySQL, but do not install MySQL can also, Because it its
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.