Input form with editble datagrid, but 2 db tables

Question

Ok, basically it like this. One form called "project" has a
db table called "project". But there is also a datagrid on the
'project" form that is called "materials" that is linked to a
different db table. However both the "materials" and "project"
tables have a relationship link. Since each "project" record will
have different "materials".
How do I set this up in Flex. I can create the "materials"
datagrid and do stuff stuff like 'add', 'update', and 'delete'. But
I need to have the datagrid on the same form as "project".
"Project" will have stuff like 'date', 'time', 'user', 'tasks',
etc..
Any help is great
Thank You

Answer 1

The problem is not data coming in but inputing data. so when
the form in populated and the datagrid is populated the recordID of
the materials table and the recordID of the project table will be
linked. Then when the project record is retrieved later it will
have only the materials for that project record in the datagrid.
| project name field user field date field |
| |
| |
| |
| |
| *************************************** |
| | editable datagrid "materials" | |
| | | |
| | | |
| *************************************** |
| |
---------------------------------------------------------------------------------