Using stacks as a database for very large data sets

[Kurt Kaufman]

"...In that case you could copy the file onto your HD temporarily, edit
and then copy it back to the server..."

Would something like this work? There would be two versions of the 
splash-stack, one for User-A, and another for User-B, C, etc.

User-A  opens splash-stack and data-stack.
               -dataStackInUse is set to true --flag
(User-B cannot open stacks)

User-A is finished with stacks.  Closes.
               -dataStackInUse is set to false

User-B may now open splash-stack and data-stack.
              -splash-stack and data-stack are automatically copied to 
computer B.
              -dataStackInUse is set to true
(User-A cannot open stacks)

User-B is finished with stacks.  Closes. --but before closeStack, the 
following:
              -splash-stack and data-stack are automatically copied back 
to computer A.
               -dataStackInUse is set to false