data extraction
Data mining, discovery of patterns in large data sets using statistics, database knowledge or machine learning Data retrieval, obtaining data from a database management system, often using a query with a set of criteria Extract, transform, load (ETL), procedure for copying data from one or more sources, transforming the data at the source system, and copying into a destination system Information extraction, automated extraction of structured information from unstructured or semi-structured machine-readable data, like for example using natural language processing to extract content from images, audio or documents