Hi, I have a parent ListContainer entity with key and name properties.
and I have a child ListItem entity with key, name and parentkey
properties. The parentkey simply refers to the key in ListContainer. I
am building a site where I list the names in listcontainer, and when
the user chooses a name, it'll display the top 100 list items. I have
three questions
1) I am wondering if it would be efficient in terms of performance if
I use the "key on child" approach. i.e., query the listitem where
parentkey = listcontainerkey.
2) While displaying the names of listcontainer, is it safe to pass the
keys to the client browser and get it back?
3) The ListItem has an additional property "IsProcessed". Now, I want
to display only the items which are not processed. Over a period if
time, I am expecting lot of listitems per listcontainer. Do you think
it would be wise to have the processed items in separate list and
delete it from the original?

I would very much appreciate your help as I've been struggling with
this requirement for long time.

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