What is cqm and dqm in cognos?
1 answer(s)
Think of them as two different engines for your Cognos reports.
CQM, or Compatible Query Mode, is the original 32-bit query engine. It's kept around mainly for backward compatibility, ensuring your older reports continue to work without a hitch.
DQM, or Dynamic Query Mode, is the modern, 64-bit Java-based engine. It's significantly faster and more powerful. DQM offers superior query optimization, better memory management, and supports newer data sources. For any new development, you should absolutely be using DQM. It's the go-forward standard for performance and capability in Cognos.