object model - ορισμός. Τι είναι το object model
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Τι (ποιος) είναι object model - ορισμός

TERM IN COMPUTING
Object Model; Object modeling; Object modelling

IBM System Object Model         
PROGRAMMING FRAMEWORK
System Object Model
In computing, the System Object Model (SOM) is an object-oriented shared library system developed by IBM. DSOM, a distributed version based on CORBA, allowed objects on different computers to communicate.
Text Object Model         
MICROSOFT WINDOWS PROGRAMMING INTERFACE
Text Object Model (TOM); RichEdit
The Text Object Model (TOM) is a Microsoft Windows API that provides developers with object-based rich text manipulation interfaces. It is implemented through COM, and can be accessed through Microsoft Word or additionally through the RichEdit controls that normally ship with Windows.
Distributed Component Object Model         
SOFTWARE FOR COMMUNICATION BETWEEN SOFTWARE COMPONENTS
DCOM95; DCOM98; Distributed component object model; Dcom
<programming> (DCOM) Microsoft's extension of their Component Object Model (COM) to support objects distributed across a network. DCOM has been submitted to the IETF as a draft standard. Since 1996, it has been part of {Windows NT} and is also available for Windows 95. Unlike CORBA, which runs on many operating systems, DCOM is currently (Dec 1997) only implemented by Microsoft for Microsoft Windows and by Software AG, under the name "EntireX", for Unix and IBM mainframes. DCOM serves the same purpose as IBM's DSOM protocol. DCOM is broken because it's an object model that has no provisions for inheritance, one of the major reasons for object oriented programming in the first place. http://microsoft.com/com/tech/DCOM.asp. [Details?] (2000-08-02)

Βικιπαίδεια

Object model

In computing, object model has two related but distinct meanings:

  1. The properties of objects in general in a specific computer programming language, technology, notation or methodology that uses them. Examples are the object models of Java, the Component Object Model (COM), or Object-Modeling Technique (OMT). Such object models are usually defined using concepts such as class, generic function, message, inheritance, polymorphism, and encapsulation. There is an extensive literature on formalized object models as a subset of the formal semantics of programming languages.
  2. A collection of objects or classes through which a program can examine and manipulate some specific parts of its world. In other words, the object-oriented interface to some service or system. Such an interface is said to be the object model of the represented service or system. For example, the Document Object Model (DOM) is a collection of objects that represent a page in a web browser, used by script programs to examine and dynamically change the page. There is a Microsoft Excel object model [1] for controlling Microsoft Excel from another program, and the ASCOM Telescope Driver is an object model for controlling an astronomical telescope.

An object model consists of the following important features:

Object reference
Objects can be accessed via object references. To invoke a method in an object, the object reference and method name are given, together with any arguments.
Interfaces
An interface provides a definition of the signature of a set of methods without specifying their implementation. An object will provide a particular interface if its class contains code that implement the method of that interface. An interface also defines types that can be used to declare the type of variables or parameters and return values of methods.
Actions
An action in object-oriented programming (OOP) is initiated by an object invoking a method in another object. An invocation can include additional information needed to carry out the method. The receiver executes the appropriate method and then returns control to the invoking object, sometimes supplying a result.
Exceptions
Programs can encounter various errors and unexpected conditions of varying seriousness. During the execution of the method many different problems may be discovered. Exceptions provide a clean way to deal with error conditions without complicating the code. A block of code may be defined to throw an exception whenever particular unexpected conditions or errors arise. This means that control passes to another block of code that catches the exception.
Παραδείγματα από το σώμα κειμένου για object model
1. Exhibited there are over 1,500 pieces of successful materials of invention and new technology in forms of actual object, model, treatise, diagram and CD.