OSM Full Form
OSM refers to “Object-Oriented System Modeling” or the full form of OSD is “Object-Oriented System Modeling” in Information Technology.
What Object-Oriented (O-O)
Object-Oriented Analysis describes an information system by identifying things called objects that represent a real person, place, event, or transaction.
Object-Oriented methodology is popular because it integrates easily with object-oriented programming languages such as java, Smalltalk, VB.Net, Python, and Perl
Programmers also like O-O code because it is modular, reusable, and easy to maintain.
Object-Oriented Terms and concepts
There are various Object-Oriented Terms and concepts:
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Unified Modeling Language: Method of visualizing and documenting an information system.
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Attributes: Characteristics the describes the object
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Methods: Tasks or Functions that the object performs
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Message: A command to perform a method
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Class: A group of similar objects
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Instance: A specific member of class
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Objects: Represented as a rectangle with the object name at the top, followed by the object’s attributes and methods.
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Encapsulation: All data and methods are self-contained
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Classes: An object belongs to a group or category called a class
- All objects within a class share common attributes and methods
Subclasses – Object within class
- TRUCK object represent a subclass within the VEHICLE class, along with other subclasses called CAR, MINIVAN, SCHOOL BUS
Superclass – A general category
- A NOVEL class belongs to a superclass called BOOK, because all novels are books.
