# Using DMs - Referencing Rules in Data Source Configurations

__*Using DM*__
__*Citation rules*__

```
mysql-instances:
  - source-id: "mysql-replica-01"
    block-allow-list:  "bw-rule-1"
    filter-rules: ["filter-rule-1"]
    route-rules: ["route-rule-1", "route-rule-2"]
  - source-id: "mysql-replica-02"
    block-allow-list:  "bw-rule-2"
    filter-rules: ["filter-rule-2"]
```
-------------------------------------------------------------
In the data source configuration, reference black and white list rules, action filter rules, and routing rules.