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Before we learn anything about ETL Testing its important to learn about Business Intelligence and Dataware. Autoboss Pc Max Update. Let’s get started – What is BI? Business Intelligence is the process of collecting raw data or business data and turning it into information that is useful and more meaningful. The raw data is the records of the daily transaction of an organization such as interactions with customers, administration of finance, and management of employee and so on. These data’s will be used for “Reporting, Analysis, Data mining, Data quality and Interpretation, Predictive Analysis”. What is Data Warehouse?

A data warehouse is a database that is designed for query and analysis rather than for transaction processing. The data warehouse is constructed by integrating the data from multiple heterogeneous sources.It enables the company or organization to consolidate data from several sources and separates analysis workload from transaction workload. Data is turned into high quality information to meet all enterprise reporting requirements for all levels of users. ETL stands for Extract-Transform-Load and it is a process of how data is loaded from the source system to the data warehouse.

Data is extracted from an OLTP database, transformed to match the data warehouse schema and loaded into the data warehouse database. Hotfix For Windows 7 Ultimate 64 Bit Iso more. Mafia 2 Melee Weapons Mod Download. Many data warehouses also incorporate data from non-OLTP systems such as text files, legacy systems and spreadsheets. Let see how it works For example, there is a retail store which has different departments like sales, marketing, logistics etc. Each of them is handling the customer information independently, and the way they store that data is quite different.