Datstage solutions, knowledge base, FAQ and best practices
2.11. When hashed files should be used? What are the benefits or using them?
Hashed files are the best way to store data for lookups. They're very fast when looking up the key-value pairs.
Hashed files are especially useful if they store information with data dictionaries (customer details, countries, exchange rates). Stored this way it can be spread across the project and accessed from different jobs.