Simple Query - SalesLine and SalesTable relation

Hi All,

It seems that there is a 1:N relation between SalesTable.SalesId and SalesLines.SalesId. 

When I create a simple query, can I also add SalesLine  as a child data source of SalesTable ? or should it be always the case that the SalesTable is the child data source of the SalesLine in the query if I want to relate these two tables each other? 

Thank you.