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).
1 Change Data Capture (CDC) â A mechanism built into SSIS (SQL Server 2012) and SQL Server 2008 Enterprise Edition to detect the rows that have changed if you donât have a LastModifiedDate type column.nline Extraction: The data is extracted directly from the source system itself. The extraction process can connect directly to the source system to access the source tables themselves, or to an intermediate system that stores the data in a preconfigured manner (i.e., transaction logs or change tables).