11.2 Objectives of the OLAP Package

   The primary objectives of the CWM OLAP package are:

• Define a metamodel of essential OLAP concepts common to most OLAP systems.

• Provide a facility whereby instances of the OLAP metamodel are mapped to deployment-capable structures; that is, models of physical data resources, such as the CWM Relational and Multidimensional packages.

• Ensure that navigation through the logical OLAP model hierarchy and its various resource models is always performed in a uniform manner; that is, by defining a standard usage of the CWM Transformation package as a means of implementing these mappings.

• Leverage services provided by other CWM packages, where appropriate (for example, use the CWM Foundation package to supply a standard representation of expressions).