Choosing the Right Data Integration Method
ETL (Extract, Transform, Load) and ELT (Extract, Load, Transform) are crucial data integration methods.
ETL = Extract, Transform, Load. It involves extracting data from various sources.
The ETL process consists of three main steps: 1. Extract the Data from different sources. 2. Transform the Data for consistency. 3. Load the data into the target database.
ELT = Extract, Load, Transform. ELT loads raw data directly into the target system before any transformations occur.
– ETL transforms data before loading. – ETL requires a separate processing server; ELT uses the target database's processing power.
ETL is ideal for environments where data quality is crucial before loading.
ELT is best suited for large volumes of data and modern cloud-based databases.