Message Definition
They are information encapsulated in a frame or packet and sent from one entity to other. Receiving entity opens the packet and retrieve information from it. Communication between two distant entities are done through message passing.
Message in Computer Networks
(1) Using e-mail , a message is a private piece of mail.
(2) In computer systems generally , a message is an information unit that the system sends back to the user or system operator with information about the status of an operation, an error, or other condition.
(3) Using some telecommunication or data access methods, a message are often the unit of data or data that's transmitted from one program or user to a different .
(4) In messaging, which is that the formal exchange of event notification, requests, or replies between programs through a messaging server , a message is data during a specified format that describes an occasion , a request, or a reply between programs.
(5) In object-oriented programming, a message is that the way that one program object requests an action from another object. A message specifies the name of the thing to which the request is formed , the action (or method ) to be performed, and any parameter or value that must be specified for this request.
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