As discussed further below, the kinds of applications that would need this model include multiuser role-playing games, air traffic control systems, stock exchanges, and telecommunication switches.
In the case of multiuser communication environment, the existence of multiuser increases the inter-user interference possibility that can affect quality and performance of the system adversely.
The multiuser support is a shared-file mode implementation where the operating system provides the locking rather than the server process.
It was a relational query system with powerful query facilities, but very limited update facility and no simultaneous multiuser facility.
Resource contention can become an issue with the standalone multiuser model as concurrency requirements and network operations increase.
For this reason, it does not support a notion of users (it's not a multiuser system) or processes - everything runs in the kernel address space.
Windows also has full support for multiple input/mouse configurations for multiuser environments.
Some electric pumps allow for multiuser operation, requiring only an accessory kit for each user.
