# Using context variables in analyses

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
* Qlik Talend Cloud Enterprise Edition
* Qlik Talend Cloud Premium Edition
* Real-Time Big Data Platform

You can use context variables in the analysis editor to filter the data on which to run the analysis, or to decide the number of concurrent connections to the database allowed by the analysis.

The Profiling perspective lets you define multiple contexts for profiling analyses and select specific context values with which to execute an analysis. You can define context parameters in the analysis editor to:

* Filter data using contexts variables with WHERE clauses and decide the data or tables/columns on which to run the analysis,

* Decide the number of concurrent connections allowed by the analysis.

  You usually set this number according to the database available resources, that is the number of concurrent connections each database can support.

Information noteImportant: You can use context variables only when you profile databases. Context variables can not be used when profiling files.

### In this section

* [Creating one or multiple contexts for the same analysis](https://help.qlik.com/talend/en-US/studio-user-guide/8.0-R2026-07/creating-one-or-multiple-contexts-for-same-analysis)
* [Selecting the context with which to run the analysis](https://help.qlik.com/talend/en-US/studio-user-guide/8.0-R2026-07/selecting-context-with-which-to-run-analysis)