You can access Data Rule Designer sub-module by clicking the LHS link Reporting > Data Rule Designer. Upon clicking this link, the Data Rule Designer page is displayed as depicted in the following figure:
The Data Rule Designer page displays existing Data Rules.
You can also click the 
button to select additional details to be displayed. These include Query ID, Query Description, Primary Object, Query, Report SQL Param, Created Date, Is system Query, and Modified Date.
This page also provides you options to search for existing Query Designer records, create new Query Designer records, edit existing Query Designer data, copy existing Query Designer data to create new record, and so on.