Summary: Data standardization is a process that ensures that data conforms to quality rules. This tutorial introduces data standardization concepts and demonstrates how you can achieve standardized data using IBM® InfoSphere® QualityStage™. A reader who is new to QualityStage standardization will get a basic understanding of the process. Readers should have basic knowledge of InfoSphere DataStage® job development. This tutorial covers standardization using country identifier, domain pre-processor, domain-specific and validation types of rule sets.