erexample - installed in a specific io-port (e.g., USB slot...

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INFS614 George Mason University An Example for ER Modeling Assume the university computing services ( UCS ) administers all campus computer networks. Each computer in a network is uniquely identifed by an inventory number, and also has a name (e.g., ise.gmu.edu) and a model (e.g., Dell Laptop). Computers are connected via networks. Each network has an identification number (id) and a capacity. Each computer is connected to a single network. The number of computers that are connected to a network may not exceed the capacity of the network. Each computer can have several peripheral devices. Each peripheral is
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Unformatted text preview: installed in a specific io-port (e.g., USB slot #1); io-port numbers are unique within the computer, and has device name for the device currently associated with it (e.g, external disk drive). Users are identified by a social security number, and also have a name. Users can access the computers assigned to them; users are guaranteed access to at least one computer. For each computer that a user may access, the user is assigned a user-id and a password. UCS ER Diagram (Conceptual Data Model) Feature(s) not captured: The number of computers that are connected to a network may not exceed the capacity of the network."...
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