Change Data Capture techniques
Change Data Capture (CDC) is the method of developing ETL processes to propagate changes in the source system into your data warehouse for dimension tables.
Getting ready
CDC is directly related to another DWH concept of Slowly Changing Dimensions (SCD), the dimension tables that data changes constantly throughout the life of data warehouse.
A good example would be the Employee dimension table, which holds data on the employees in your company. As you can imagine, this table is in constant flux: new employees are hired and some employees leave the company, change positions and roles, or even transfer between departments. All these changes have to be propagated to an Employee dimension table in DWH from the source ...
Get SAP Data Services 4.x Cookbook now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
