According to ieees definition software engineering can be defined as the application of a systematic, disciplined, quantifiable approach to the development, operation, and maintenance of software, and the study of these approaches. Software engineering cs8494, cs6403 anna university. Software engineering is an engineering discipline that is concerned with all aspects of software production. Familiarity with a highlevel programming language and data structures textbooks. Is the fundamental design method in software engineering that applies in numerous situations. Code refactoring is a disciplined way to restructure code, undertaken in order to improve some of the nonfunctional attributes of the software. Activity diagrams and state charts for detailed modeling. Bernd schoeller chair of software engineering lecture 2. Craig larman, applying uml and patterns, 3rd edition, prenticehall, 2007. Applied software project management slides and lecture. Overview history of use in the past, refactoring was not a common practice in development processes for example, cvs created in 1984. Apr 16, 2020 software engineeringii cs605 vu video lectures. Reference materials for the lecture, either from the textbooks or relevant articles, are listed. Software requirements engineering is the art and science of developing an accurate and complete definition of the behavior of software that can serve as the basis for software development.
Significant shift to this kind of overall approach to software development innovation, creativity, design if you just pick up one method, at one moment in time, and it helps you, that would be an important result. Improving software quality through refactoring by means of. Refactoring is often a part of the lifecycle of software, and may not be targeted specifically at legacy code. Robustness the software is a tolerate unpredictable or inva be designed with a resilience t extensibility new capabilitie wiih j h h thout major changes to the dli hi le to perform a required ns for a specified period of.
Fourth, the proposal is introduced and is followed by the presentation of a real. In other words, code refactoring is the process of clarifying and simplifying the design of existing code. Validation and verification powerpoint html lecture 23, tools for debugging ii for slides, see lecture 20 lecture 24, legal issues powerpoint html lecture 25, management iii. Typically, this is done by applying series of refactorings, each of which is a usually tiny change in a computer programs source code that does not modify its functional requirements. Pdf ec6405 control system engineering lecture notes. Requirements analysis should make minimal assumptions about the system design. Program comprehension program comprehension in software engineering search based software engineering for program comprehension case studies clustering based lecture 2 machine learning in software engineering existing approaches reformulate software engineering problems. To construct the software the automated tools are used. Goals for this lecture very briefly introduce the concepts of agile design and extreme programming agile design is a design framework extreme programming is one way to implement agile design other agile life cycles include scrum, crystal, featuredriven development, and adaptive software development. Modeldriven software refactoring philippsuniversitat marburg.
It removes redundancy, unused design elements, inefficient or unnecessary algorithms. Spring 2005 ece450h1s software engineering ii refactoring refactoring is the process of rewriting written material to improve its readability or structure, with the explicit purpose of keeping its meaning or behavior. In reality the process of dealing with legacy code often begins with refactoring, and progresses to reengineering. Teacher has given us instructions but we are unable to follow them, so i was hoping to find some help from stackoverflow. An introduction to objectoriented analysis and design, prentice hall, 2005. Lecture 2 software reengineering some material is based on the cser projects at u of t. Feb 01, 2017 software engineering is an engineering discipline that is concerned with all aspects of software production. Our new crystalgraphics chart and diagram slides for powerpoint is a collection of over impressively designed datadriven chart and editable diagram s guaranteed to impress any audience. The process description is created for adding, modifying, deleting or retrieving a data object. Lecture 2 machine learning in software engineering existing approaches. In the application generation phase, the actual system is built. The example illustrates that code refactoring helps reduce complexity without. Refactoring has grown into a wellknown technique, and most software development teams at least claim to be doing refactoring regularly. Software engineering introduction to software engineering software process, perspective and specialized process models software project management.
Purchaseinfotablemodel has a list inherited from class salessystemtablemodel and sale has a set. According to ieees definition software engineering can be defined as the application of a systematic, disciplined, quantifiable approach to the development, operation, and maintenance of software. Theyll give your presentations a professional, memorable appearance the kind of sophisticated look that todays audiences expect. Objectoriented software engineering pdf by professor. In practice, most large systems are developed using a process that incorporates elements from all of these models. Course informationsyllabus pdf guidelines for all assignments pdf book. Refactoring produces a subsequent enhancement of software of design. Understanding all of the design activities that take place in software engineering. Reuseoriented software engineering the system is assembled from existing components. Software requirement engineering requirement documentation. A syntactic refactoring step is a change in some essentially syntactic aspect of the piece of the software semantic refactoring modify the logic of the software and how it functions. Feb 29, 2012 so i am taking part in software engineering course and our assignment is refactoring. Rapid application development model rad rad model vs traditional sdlc. Improving the design of existing software, renowned object.
But the requirements definition must be consistent with computing technology and the resources available. A practitioners approach, mcgraw hill, 2005 pre ian sommerville, software engineering, addison wesley, 2007 som lecture 1 8242015. Managing people powerpoint html lecture 26, risks in software engineering powerpoint html lecture 27, software engineering as. Pdf ec6405 control system engineering lecture notes, books. Refactoring is a change made to the internal structure of software to.
Chart and diagram slides for powerpoint beautifully designed chart and diagram s for powerpoint with visually stunning graphics and animation effects. Lecture refactoring refactoring and code smells where are. Ec6405 control system engineering notes,lecture notes. This presentation on code refactoring is part of a larger course. Refactoring is the process of changing a software system in such a way that it does not alter the external behavior of the code design yet improves its internal structure. In agile software development refactoring is an important phase for the. Bruce eckels thinking in java,4th edition, with jdk 2 code, is available for free. Refactoring is intended to improve the design, structure, andor implementation of the software its nonfunctional attributes, while preserving the functionality of the software. Engineering maintainable android apps, which is a 4 week mooc that shows by example various methods for engineering maintainable android apps, including testdriven development methods and how to developrun unit tests using junit and robotium or equivalent automated testing frameworks for android, as well as how to successfully apply common javaandroid software patterns to improve the. Or software engineering is the establishment and use of sound engineering principles in order to obtain economically developed software that is reliable and works efficiently on real machines 12. Winner of the standing ovation award for best powerpoint templates from presentations magazine.
The prototypes are independently tested after each iteration so that the. Introduction to software engineeringtestingrefactoring. Lecture notes software engineering concepts aeronautics. Questions tagged refactoring ask question refactoring is a disciplined technique for restructuring an existing body of code, altering its internal structure without changing its external behavior.
Software engineering pdf files are listed below please check it link. Overview of software development processes in ppt and in html. Potential advantages of refactoring may include improved code readability. View notes lecture refactoring from computer 104 at jaypee institute of information technology. Refactoring is the process of rewriting written material to improve its readability or structure, with the explicit purpose of keeping its meaning or behavior. From iteration1 to iteration2 more requirements and refactoring lecture 14. Ieee defines software design as both a process of defining, the architecture, components, interfaces, and other characteristics of a. These training materials are based on martys books core servlets and javaserver pages, more servlets and javaserver pages, and core web programming, and various online tutorials and conference talks. Basically, code refactoring is the process of changing a programs source code without modifying its external functional behavior, in order to improve some of the nonfunctional attributes of the software. Software engineering, 6th edition, ian sommerville, addisonwesley, isbn 0209815x. Worlds best powerpoint templates crystalgraphics offers more powerpoint templates than anyone else in the world, with over 4 million to choose from. According to martin fowler, refactoring is a change made to the internal structure of software to make it easier to understand and cheaper to modify without changing its observable behavior. Ieee defines software design as both a process of defining, the architecture, components, interfaces, and other characteristics of a system or component and the result of that process.
An exploratory study on the relationship between changes and refactoring daniel almeida. Estimation loc and fp based estimation, cocomo model project scheduling scheduling, earned value analysis risk management software requirements. Extreme programming ppt free download as powerpoint presentation. May be reproduced only for student use at the university level when used in conjunction with software engineering. Scribd is the worlds largest social reading and publishing site.
Software engineering discipline which aims at understanding computer code written in a. Introduction to software engineering linkedin slideshare. As a simple example of a program refactoring, consider the refactoring. Faa story, introduction to class projects in ppt and in html and as a sequence of jpegs. Reengineering versus refactoring the craft of coding. Extreme programming ppt product development software. The term is by analogy with the factorization of numbers and polynomials. When software is refactored, the existing design is examined for redundancy.
Software design is a phase in software engineering, in which a blueprint is developed to serve as a base for constructing the software system. What is refactoring and what is only modifying code. Code refactoring techniques in agile software development. Refactoring term originated with developers with smalltalk expert oo programmers employed techniques to improve the structural integrity and performance of applications refactoring was used to develop efficient and flexible frameworks martin fowler produced a catalog of these techniques in a 1999 text with help from kent beck and others the idea is to change your code a small step at a time. So i am taking part in software engineering course and our assignment is refactoring. Lecture 5 topics on refactoring department of computer. The best thing about refactoring is its remarkably clear presentation, along with. These notes are according to the r09 syllabus book of jntuh. The adobe flash plugin is needed to view this content. To improve the design of software to counter code decay software ageing. Code refactoring is the process of restructuring existing computer codechanging the factoringwithout changing its external behavior.
It is a disciplined way to clean up code that minimizes the chances of introduci. Feb 23, 2016 refactoring is often a part of the lifecycle of software, and may not be targeted specifically at legacy code. Find materials for this course in the pages linked along the left. Software design reliability the software is ab function under stated conditio time.
Throughout part i of applied software project management, many scenarios are identified which highlight. Refactoring is the process of changing a software system in such a way that it does not alter the external behavior of the code, yet improves its internal structure. Ppt software engineering refactoring powerpoint presentation free to view id. Helps increase the ability to develop the software in parallel. Different aspects of organizational and software engineering support pair programming as following x economics. Code refactoring is the process of changing a computer programs internal structure without modifying its external functional behavior or existing functionality, in order to improve internal nonfunctional properties of the software, for example to improve code readability, to simplify code structure, to change code to adhere to a given. Refactoring in java at software engineering course stack. Reengineering and refactoring look very similar, and there are likely areas, such as migration, where they overlap.
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