# Using IBM DB2 for LUW as a source

This section describes how to set up and use an IBM DB2 for LUW database as the source database in a replication task.

In this section:

* [Prerequisites](https://help.qlik.com/en-US/replicate/November2025/Content/Global_Common/Content/SharedReplicateHDD/IBM4DB2-luw/prereq_db2.htm#ar_ibm_db2_456845099_1404460)
* [Replicating 4-byte UTF8 emojis](https://help.qlik.com/en-US/replicate/November2025/Content/Global_Common/Content/SharedReplicateHDD/IBM4DB2-luw/prereq_emojis.htm)
* [Limitations and considerations](https://help.qlik.com/en-US/replicate/November2025/Content/Global_Common/Content/SharedReplicateHDD/IBM4DB2-luw/limitations_db2.htm#ar_ibm_db2_456845099_1404155)
* [Supported data types](https://help.qlik.com/en-US/replicate/November2025/Content/Replicate/Main/IBM%20DB2%20for%20LUW/db2_db_data_types_source.htm#ar_ibm_db2_456845099_1403728)
* [Setting general connection properties](https://help.qlik.com/en-US/replicate/November2025/Content/Replicate/Main/IBM%20DB2%20for%20LUW/set_up_ibm_db2_for_luw_db_as_source.htm)
* [Setting advanced connection properties](https://help.qlik.com/en-US/replicate/November2025/Content/Replicate/Main/IBM%20DB2%20for%20LUW/advanced_prop_db2_source.htm)