# Active Data Cataloging

[](https://help.qlik.com/talend/en-US/talend-data-catalog/Content/user-guide/data-cataloging/active-data-cataloging.htm)

TDC may be used as an active data catalog, providing:

| **Active Data Catalog Feature** | **Description** | **Access Method** |
| --- | --- | --- |
| Publishing platform | All features identified in this user guide | Web based HTML |
| Programmatic (API) based access to all cataloged metadata | Ability for other software and systems to:Lookup definitionsSearch for objects including terminologyReport on cataloged metadataRetrieve lineage | TDC REST API (See separate user guide) |
| Export glossary | Export terminology and inter-relationships within a glossary | UI and invoked from REST API |
| Export results of search and browse | Export the results of a search or browse | UI and invoked from REST API |
| Export semantic mapping | Export semantic links in a given semantic mapping | UI and invoked from REST API |
| Export data mapping | Export data mapping, including source and target definitions, mapping specs, joins, lookups, filters, documentation of all elements and mappings, etc. | UI and invoked from REST APIMicrosoft Excel metadata formatData integration tool native format |
| Export to metadata target tool | From data store models, subject areas in PDMs, etc., can export the documentation, relationships, etc. to other business intelligence, data modeling, data virtualization, etc. tools | UI and invoked from REST APITarget tool native format |