Analisis berorientasi obyek merupakan kegiatan yang dilakukan untuk mengembangkan model yang menggambarkan bagaimana suatu perangkat lunak dapat bekerja memenuhi persyaratan yang diinginkan pengguna. Pressman (2001 ; 572) mengungkapkan “The objective of object-oriented analysis is to develop a model that describes computer software as it works to satisfy a set of customer-defined requirements. OOA, like the conventional analysis methods, builds a multipart analysis model to satisfy this objective. The analysis model depicts information, function, and behavior within the context of the elements of the object model.”
Desain berorientasi objek menggambarkan arsitektur perangkat lunak, spesifikasi fungsi yang dibutuhkan, deskripsi objek dan mekanisme komunikasi data. Pressman (2001 ; 603) menjelaskan “The design of object oriented software requires the definition of a multilayered software architecture, the specification of subsystems that perform required functions and provide infrastructure support, a description of objects (classes) that form the building blocks of the system, and a description of the communication mechanism that allow data to flow between layers, subsystems, and objects. Object-oriented design accomplishes all of these things.”
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