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How does the Dialog handle user requests?
when an action is performed ,the system triggers the PROCESS AFTER INPUT event. The data passed contains field screen data data entered by the user and a function code. A function code is a technical name that has been assigned in a screen Painter or Menu Painter to a many entry,a push button, the ENTER key or a function Key of a screen
Take the following flow graph and use the procedure in chapter 8 to derive an equivalent regular expression. Show all intermediate graphs (to ensure that you follow the procedure,
Information Technology or Information System Before going further we need to clarify what we mean by the term information system. It is easy to confuse terminology as many tex
What is Locking? When two users at the same time attempt to access the similar data record, this is synchronized by a lock mechanism
How to manage the web based projects? Many project management applications contain additional functions useful in the management of group projects. These features may contain g
Explain about the passive graphics device A passive graphics device simply draws pictures under computer control; i.e. it allows the computer to communicate graphically with th
Q. Show the example of internet address? The following can be a typical person understandable address on Internet: VVS @ expertsmind.us VVS is an username which in gene
What are semaphores? Semaphore : A semaphore is a synchronization tool which gives a general-purpose solution to controlling access to critical sections. It s an abstract data
What do you mean by system calls? System calls give the interface among a process and the operating system. When a system call is executed, it is treated as by the hardware as
Q. Define Wait protocol? The wait protocol is used for resolving conflicts that arise due to some multiprocessors requiring same resource. There are 2 kinds of wait protocols:
What is macro call? Explain. Macro call: While a macro name is used along with a set of actual parameters this is replaced through a code generated from its body. Such code
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