A common language needs a common vocabulary
Metadata is not just a departmental or application-centric resource. Metadata informs your entire data domain. So, if you are embarked upon an enterprise data catalog or a metadata management system, your ERP or CRM data models & metadata have to be taken into account. Not to do so, prejudices the informational integrity of the entire data domain.
Generally, the industry-standard ERP & CRM applications you have now extracted metadata and data model information from, have high volumes of data wrapped up in complex (and sometimes impenetrable) data models. Even with the metadata or information you need, this is definitely an elephant that needs slicing!
To organise the metadata and be able to place it in the context of relationships between tables and other objects, applications, or entities, the task of curation needs breaking up into manageable subsets. But in large and complex data models navigation is difficult. A typical SAP system has over 90,000 tables; a typical JD Edwards application has over 5,000; a Siebel CRM deployment 3,000 tables - the point of origin is lost by the time you find the destination! So a specialist tool like Safyr is incredibly helpful in de-scaling these tasks by sub-setting metadata - in addition to its other powerful capabilities.