etl data warehouse concepts

ETL technical support work are briefly described. After the Data Warehouse is on-line, the ETL group needs to provide technical support for the normal operation of the ETL work. Typically, this technical support work is divided into four levels. 1. The first level of techni

has tdwm (telecom data warehouse model), while NCR has its own TS-LDM model. Therefore, we can see that different companies have their own understanding of a specific industry, so there will be different companies targeting a specific industry model. For different industries, the same company also has different models, depending on the different business characteristics of different industries.For example,

industry, so there will be different companies targeting a specific industry model. For different industries, the same company also has different models, depending on the different business characteristics of different industries. For example, the tdwm model of IBM contains the following nine concepts: Figure 1. tdwm conceptual model of IBM Many may ask why your model has nine concepts, not ten, and 11? W

professionals who need to know how to deliver Data Warehouse solutions. This document assumes that you are familiar with the concepts of systems and databases. Many topics are not described in this article, but they are also the basis for delivering good Data Warehouse solu

0x00 Preface The following content, is the author in the study and work of some summary, of which the concept of most of the content from the book, the practical content mostly from their own work and personal understanding. Due to the lack of qualifications, there will inevitably be many mistakes, I hope to criticize. Overview The Data warehouse contains a lot of content, which can include architecture, m

unification of customer information from various internal and external application segmentation, which is the basic task of Analytical CRM. 1 shows the architecture of Analytical CRM. Among them, the customer information data warehouse is the core of analyticcrm. Its task is to extract data from the OLTP system and convert the extracted

source4) Select the Data Warehouse Technology and Platform5) extract, purify, and convert data from operational databases to Data Warehouses6) Select Access and report tools7) select database connection Software8) Select data analysis and

ETL is the process that the data of the business system is loaded into the data warehouse after being extracted and cleaned, the aim is to integrate the scattered, messy and standard data in the enterprise to provide the analysis basis for the decision of the enterprise.

ETL is responsible for the scattered, heterogeneous data sources such as relational data, flat data files, such as the extraction of the temporary middle layer after the cleaning, transformation, integration, and finally loaded into the data

ETL is a process of extracting, cleaning, and transforming data from a business system and loading it into a data warehouse. It aims to integrate scattered, disorderly, and standardized data in an enterprise, providing analysis basis for enterprise decision-makingETLYesBiThe

Tags: OLAP online analytics for Data warehouse applicationsRelated articles:Data Warehouse Application (i): Data Warehouse model designData Warehouse Application (ii): Data extraction,

Construction Practice-add data to ODS tables44. Data Warehouse Construction Practice-add data to ODS tables (Continued 1: Considering Incremental data)45. Data Warehouse Construction P

There are four data ETL modes based on the model design and source data: Completely refresh, image increment, event increment, Image Comparison There are four data ETL modes based on the model design and source data: Complete

The life cycle approach provides a roadmap for the development of data warehouses, and the overall structure and steps of the life cycle approach are Define Business requirements Technical path Technical Architecture Design Selection and installation of products Data path Dimension modeling Physical design ETL Des

associated with the warehouse, including the ELT jobs that were created earlier in design Studio. About this tutorial This tutorial is the 1th part of the introductory series of Informix Warehouse Feature. This tutorial describes the Informix Warehouse option and its components and architecture. Outlines the key concepts