If your MDT thinks it is possible to cure your bile duct cancer, surgery will be needed to remove any cancerous tissue. Depending on the extent of the cancer, it may be necessary to remove: 1  the part of your bile duct that contains cancerous cells. 2  your gallbladder.
Data extraction. Data extraction is the act or process of retrieving data out of (usually unstructured or poorly structured) data sources for further data processing or data storage (data migration).
In computing, Extract, Transform and Load (ETL) refers to a process in database usage and especially in data warehousing that:1  Extracts data from homogeneous or heterogeneous data sources.s the load phase interacts with a database, the constraints defined in the database schema â as well as in triggers activated upon data load â apply (for example, uniqueness, referential integrity, mandatory fields), which also contribute to the overall data quality performance of the ETL process.