The theory of data integration forms a subset of database theory and formalizes the underlying concepts of the problem in first-order logic. Applying the theories gives indications as to the feasibility and difficulty of data integration.
Informatica Data Quality Use Cases and Deployment Scope. IDQ is used to update the customer data with correct address, name, phone numbers etc. It's used in the Digital IT department at my current organisation. It identifies the duplicate customers and maintains the up to date details of a customer.
These tools allow the data scientists to perform descriptive as well as predictive analytics. A data scientist needs to be proficient in one or more analytic tools in order to do her job effectively. Microsoft Excel is the most popular analytic tool in the world. It does an excellent job of performing descriptive analytics on limited amounts of data. SAS is also an extremely powerful and popular tool.