ETL stands for Extract, Transform and Load, it is the process of extracting data from the source system to the data warehouse. ETL is a very important component for devouring data warehouses, business intelligence, and big data management. AN ETL tool is used to combine them from various sources into a common format and load the transformed data into a handy environment. In other words, It is a process of retrieving data from data sources, transforming and cleansing data to make it usable by different application and loading transformed data into a target database or any type of analytical repository.
Ease of Use
ETL tool itself specifies the sources of data and the rules of extracting and processing of that data then, it implements the process and load of that data. It’s not really the same thing as programming in a traditional programming sense, where you write procedures and codes. Rather, nature works with a graphical interface where you are indicating rules and conceivably utilizing a simplified interface to demonstrate the streams of information in a procedure.
Visual Flow
Another advantage of the ETL is that it provides a visual flow of the logic of the system. Each tool presents these flows differently but even the least-appealing of these ETL tools compare favorably to the custom system consisting of plain SQL, stored procedure and script and perhaps a handful of other technologies.
Advanced Data Profiling and Cleansing
Most information stockrooms are basically perplexing, with numerous information sources and targets. In the meantime, prerequisites for change are frequently genuinely basic, comprising fundamentally of queries and substitutions. On the off chance that you have an intricate change prerequisite, for instance in the event that you have to de-copy your client show, you should purchase on the extra module over the ETL arrangement (information profiling/information purging). In any event, ETL apparatuses give a more extravagant arrangement of purging capacities that are accessible in SQL.
Big Data Management
A lot of ETL instruments are currently fit for joining organized information with unstructured information in one mapping. Also, they can deal with a lot of information, that doesn't really need to be put away in information distribution centers. Presently Hadoop-connectors or comparative interfaces to huge information sources are given by just about 40% of the ETL instruments these days. Furthermore, the help for Big Data management is developing consistently.
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