db2
IBM Db2
Db2 is a family of data management products, including the relational database. It is famous for running on Mainframes (z/OS) but also runs on Linux/Unix/Windows (LUW).
When to Use
- Legacy/Mainframe: The backbone of banking and insurance legacy systems.
- Hybrid Cloud: IBM's "Cloud Pak for Data" strategy makes Db2 run anywhere (OpenShift/Kubernetes).
- Analytics: Db2 Warehouse (formerly BLU Acceleration) offers column-store in-memory acceleration.
Core Concepts
BLU Acceleration
Columnar storage + In-memory computing. Drastically speeds up analytics queries without complex indexes.
pureScale
Clustering technology (similar to Oracle RAC) for unlimited scalability and high availability on distributed systems.
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