cannot find the definition for the datasource variable

Hi There,

I’m learning the Dynamics AX 2012 programming at the moment, suppose i drag a Table(MainAccount) to the Form’s datasources.

i can reference the dataTable in the X++ codes by using “MainAccount_ds”, or the query like this “MainAccount_q”. from my point of view, there are pre-defined object reference for the datasource.

Where i can find all the pre-defined variables for the datasource ?

many thanks.