Why is datasource handling in query different from handling it in a form?

Question

I am trying to rewrite some form to the lisp page template. In a list page you must use query as a datasource. I have datasource structure in previous (without list page template) and a new one with list page template. But I am now facing a fact that handling datasource in form is different than handling it in a query.

Can someone explayin why it is done this way and how to make a query so there will be almost no difference between datasource before and after using list page template?

For example I have DSs Object, Sub-Object1, Sub-Object2. Sub-Object1 have a jointSource Object in properties with exist joint and Sub-Object1 have jointSource Object with Inner Join.

Is there some way to set this in Query DS properties or I must add datasource to datasource and link in more manually.

Answer 1

Well mayby because a form need more information than query?

If you do have a query already.you can drag it to your form as a datasource.

See http://msdn.microsoft.com/en-us/library/gg844014.aspx

Answer 2

The same effect as a datasource with join type in properties can be done on query by using related datasources. So on the query the structure will be more readable than structure on normal form datasources.