| What is the
Common Warehouse Metamodel (CWM)?
What
is CWM? Here you find a short explanation of what it's all
about.
Purpose
The purpose of OMG? Common
Warehouse Metadata Initiative (CWMI) is to enable easy
interchange of metadata between data warehousing tools and
metadata repositories in distributed heterogeneous
environments.
The CWM team
In response to OMG? CWMI RFP, the
following companies
- IBM
- Unisys
- NCR
- Hyperion
- Oracle
- UBS AG
- Genesis Development Corporation
- Dimension EDI
created the Common Warehouse
Metamodel (CWM). The submission is also supported by Deere
& Company and Sun Microsystems.
Metadata modeling
The Common Warehouse
Metamodel is a specification for modeling metadata for
relational, non-relational, multidimensional systems, and most
other objects found in a data warehousing environment.
Tracing lineage of data
In
addition, CWM models enable users to trace the lineage of data
CWM provides objects that describe where the data came
from and when and how the data was created.
XML Metadata Interchange
Instances of the
metamodel are exchanged via XMI (XML Metadata Interchange)
documents.
The ultimate goal of CWM is to do for data
warehousing and business intelligence tools what HTML did for
web browsers.
|
IBM