What is that feature called that has subentries & a plus sign infront of the key?

[lbbs]

Newbie, so please don't flame me. I am just starting to learn access. I
seem a feature in access a while ago, but don't remember what it was called.
I seen project lab example that had, a plus sign besides the inventory
(key)number. When you click on the plus sign it show sub items under each
inventory number. I am trying to start a small data base that has no
duplicate key inventory numbers (with this feature it will make that
possible). thanks.

[TC]

"lbbs" <no***@nonee.com> wrote in message
news:10***************@news.vaxxine.com...

Newbie, so please don't flame me. I am just starting to learn access.
Nothing wrong with that!

I seem a feature in access a while ago, but don't remember what it was called. I seen project lab example that had, a plus sign besides the inventory
(key)number. When you click on the plus sign it show sub items under each inventory number.
That would be a "treeview control". A "control" is a thing that lets you
interact with the database. These include textboxes, listboxes, combo boxes,
command buttons, labels, & so on. A treeview control is a particular kind of
control which displays data in the way you describe. treeviews are good when
the data has a hierarchical structure; eg. a record has 3 child records,
some of which have their own child records, & so on. A treeview lets you
navigate down through that structure.
I am trying to start a small data base that has no
duplicate key inventory numbers (with this feature it will make that
possible). thanks.

Duplcate keys are prevented by defining them as the so-called "primary key"
of the table, or by defining a unique index on them. his is nothing to do
with "controls", treeview or otherwise!

HTH,
TC