This blog post lists out some of the core concepts of Data Quality assessment, perception changes in data quality, data quality management over the years, use of data quality tools to parse, standardize and cleanse data.
It is common practice to make changes to the underlying systems either to correct problems or to provide support for new features that are needed by the business. Changes can be in the form of adding a new source system to your existing Enterprise Data Warehouse (EDW).
Teradata - Overview
PowerCenter works with many databases, among which Teradata is one of a kind. Informatica PowerCenter integrates Teradata database into any business system and it serves as the technology foundation for controlling data movements. In Informatica PowerCenter, ODBC is used to connect with Teradata tables and its data.