# Using IBM Informix as a source

This section describes how to set up and use an IBM Informix database as the source database in a replication task.

In this section:

* [Prerequisites](https://help.qlik.com/en-US/replicate/November2025/Content/Replicate/Main/IBM%20Informix/prereq_informix.htm#ar_informix_3524105662_1388177)
* [Limitations and considerations](https://help.qlik.com/en-US/replicate/November2025/Content/Replicate/Main/IBM%20Informix/limitations_informix.htm#ar_informix_3524105662_1384506)
* [Required permissions](https://help.qlik.com/en-US/replicate/November2025/Content/Replicate/Main/IBM%20Informix/security_req_informix.htm#ar_informix_3524105662_1393296)
* [Supported data types](https://help.qlik.com/en-US/replicate/November2025/Content/Replicate/Main/IBM%20Informix/informix_db_data_types_source.htm#ar_informix_3524105662_1387696)
* [Setting general connection properties](https://help.qlik.com/en-US/replicate/November2025/Content/Replicate/Main/IBM%20Informix/set_up_informix_db_as_source.htm)
* [Setting advanced connection properties](https://help.qlik.com/en-US/replicate/November2025/Content/Replicate/Main/IBM%20Informix/advanced_prop_informix_source.htm#ar_informix_3524105662_1387139)