3.2 Organization of the CWM

   The CWM Metamodel uses packages and a hierarchical package structure to control complexity, promote understanding, and support reuse. The model elements are contained in the following packages:

   ObjectModel package

• Core package - Contains classes and associations that form the core of the CWM object model, which are used by all other CWM packages including other ObjectModel packages.

• Behavioral package - Contains classes and associations that describe the behavior of CWM objects and provide a foundation for describing the invocations of defined behaviors.

• Relationships package - Contains classes and associations that describe the relationships between CWM objects.

• Instance package - Contains classes and associations that represents instances of CWM classifiers.

   Foundation package

• Business Information package - Contains classes and associations that represent business information about model elements.

• Data Types package - Contains classes and associations that represent constructs that modelers can use to create the specific data types they need.

• Expressions package -Contains classes and associations that represent expression trees.

• Keys and Indexes package - Contains classes and associations that represent keys and indexes.

• Software Deployment package - Contains classes and associations that represent how software is deployed in a data warehouse.

• Type Mapping package - Contains classes and associations that represent mapping of data types between different systems.

   Resource package

• Relational package - Contains classes and associations that represent metadata of relational data resources.

• Record package - Contains classes and associations that represent metadata of record data resources.

• Multidimensional package - Contains classes and associations that represent metadata of multidimensional data resources.

• XML package - Contains classes and associations that represent metadata of XML data resources.

   Analysis package

• Transformation package - Contains classes and associations that represent metadata of data transformation tools.

• OLAP package - Contains classes and associations that represent metadata of online analytical processing tools.

• Data Mining package - Contains classes and associations that represent metadata of data mining tools.

• Information Visualization package - Contains classes and associations that representing metadata of information visualization tools.

• Business Nomenclature package -Contains classes and associations that represent metadata on business taxonomy and glossary.

   Management package

• Warehouse Process package - Contains classes and associations that represent metadata of warehouse processes.

• Warehouse Operation package - Contains classes and associations that represent metadata of results of warehouse operations.