![]() In this case, the ETL process extracts the data from the different banking source systems, transforms it until it is standardized and consistent, and then loads the data into the data warehouse. Since each source system can have its own naming conventions, the data that comes from one system may be inconsistent with the data that comes from another system. In an ELT process, data is extracted from the source locations, but instead of loading it into a staging area pending transformation, raw data is loaded directly to the target data repository to be transformed as needed. Each of these different sets of data is likely gathered by different source systems. The main difference between ETL and ELT (Extract, Load, Transform) is in the order of operations. Le terme ETL « Extract, Transform, Load », désigne une série d’opérations liées aux données : Extraction, Transformation, Chargement. This process can be explained with the example of a bank that wants to consolidate a variety of information about a particular customer, including the customer's ATM activity, loan status, and account balances. Ces opérations exigent des processus ETL. The data is loaded into the data warehouse. Transformation procedures can include converting data types and names, eliminating unwanted data, correcting typographical errors, filling in incomplete data, and similar processes to standardize the format and structure of data. The data is transformed and prepared to be loaded into the data warehouse. The ETL process involves the following steps: 1ĭata is gathered from various source systems. The extraction, transformation, and loading (ETL ) process represents all the steps necessary to move data from different source systems to an integrated data warehouse. In our case, we’ll receive data from an Oracle database (most kiosks), from Salesforce (stores), and. ETL is a group of processes designed to turn this complex store of data into an organized, reliable, and replicable process to help your company generate more sales with the data you already have. ![]() Extraction, transformation, and loading process ETL stands for Extract, Transform, and Load.
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