olap

[Database Administrator]

nolap

[HENARRY JAYA]

OLAP servers handle mission-critical production data accessed through simple queries. Usually handles queries of an automated nature.

OLAP servers handle management-critical data accessed through an iterative analytical investigation. Usually handles queries of ad-hot nature.
In database theory, an OLAP cube is an abstract representation of a projection of an RDBMS relation. Given a relation of order N, consider a (hopefully PK-preserving) projection that subtends X, Y, and Z as the key and W as the residual attribute. Characterizing this as a function,