# Ontologies used in Talend Studio

Available in...

* Big Data Platform
* Cloud API Services Platform
* Cloud Big Data Platform
* Cloud Data Fabric
* Cloud Data Management Platform
* Data Fabric
* Data Management Platform
* Data Services Platform
* MDM Platform
* Qlik Cloud Enterprise Edition
* Qlik Talend Cloud Enterprise Edition
* Qlik Talend Cloud Premium Edition
* Real-Time Big Data Platform

## What is an ontology?

An ontology is a description of the concepts, attributes, and the relationships that can exist for data in multiple columns. For example, a customer column is the concept, and date of birth and name are the attributes of the concept. An ontology lists concepts, attributes, and synonyms of the attributes.

## What an ontology is used for in Talend Studio?

Using the ontology repository stored on the Elasticsearch server with Talend Studio enables knowledge sharing by re-using indicators and patterns that are already analyzed and seen to best suit the type of data you analyze.

Talend Studio analyzes column content based on a set of methods (regex, data dictionary and keyword dictionary) and then decides what category does the data fall in. For example, for data like:

* user@talend.com, Talend Studio analyzes it against a regex and find it to be an EMAILADDRESS,
* John, Talend Studio analyzes it against the data dictionary and find it to be FIRSTNAME,
* 43 Chester Road, Talend Studio analyzes the tokens in the data string against keywords in the dictionary and find Road to be an ADDRESSLINE.

## What ontologies are used in Talend Studio?

An ontology has been built on the Elasticsearch server by merging different business standards, UBL, and OAGI:

* Universal Business Language (UBL): An OASIS effort to create a synthesis of existing XML business document libraries into one universal business language.
* Open Application Group (OAGI): OAGI defines a common content model and common messages for communication between business applications.

The final outcome of the merge is 412 concepts that apply on several domains including: customer, company, geography, product, finance, etc.