Apache Spark has become a hot topic in the world of Analytics. It is seen as a better performing alternative to Map/Reduce , and as a means to do analytics combining data across a wide set of data sources. This video is a excellent introduction to what Spark is, and how it works with DB2 for z/OS.
The Logical Data Warehouse is a data management architecture for analytics. It is a collection of data repositories and associated data services for management and access to data. IBM Fluid Query is a new software component that extends the concept of a federated query to Big Data.