object-oriented approach vs structured approach


0000002042 00000 n You can now modularize such code with aspects. Specific steps are as follows: Review and refine the data flow diagram; Determine the type of data flow diagram; Map the data flow diagram to the software module structure; Decompose the high-level modules layer by layer based on the data flow diagram, and design the middle and lower-level modules; Optimize the control structure and algorithm of the module; Structured methods are relatively weak in adapting to changes in requirements, and functional changes may even affect the whole body. 0000014594 00000 n The second step is to carry out detailed design, determine the internal control structure and algorithm of each function module, and finally generate the program flowchart of each function module. 0000016202 00000 n While some methodologists have advocated retaining Structured Analysis and have worked to merge the two paradigms, others have pointed out significant disadvantages of combining them and urge the use of a unifie d object-oriented paradigm throughout all development activities. The structured method divides the system functionally, divides the system into modules according to functions, writes the sub-modules into sub-programs, and solves complex problems through the coupling of structures and levels between sub-programs. Its essence is the agile development method. 0000126784 00000 n 3 Comparison of structured method and object-oriented method. The object-oriented approach is actually a structured re-abstraction and re-modularization. 2001, [2] Shao Weizhong, Yang Fuqing. 0000071336 00000 n 0000106422 00000 n You've probably found yourself repeating the same lines of code in lots of different object-oriented classes because those classes each need that functionality, and so you can't easily wrap it up in a single place. Each stage must pass strict inspections before passing the test. Structural analysis is to analyze the requirements through data, and the functional modules are connected through data. 21 0 obj << /Linearized 1 /O 23 /H [ 1360 264 ] /L 193761 /E 153411 /N 6 /T 193223 >> endobj xref 21 46 0000000016 00000 n 0000010862 00000 n 0000002930 00000 n The structured method can be divided into structured analysis, structured design and structured realization according to the software cycle, and SA and SD are mainly discussed here. Provides unique and advanced program structuring and modularization techniques. 0000009683 00000 n The object-oriented method absorbs the basic ideas and advantages of structuring, and adds the abstraction of operations on the basis of data abstraction, making the object-oriented program highly reusable. Object-oriented technology. As shown in (4). The idea of structured programming was proposed in "GOTO Statements of Harmfulness" by Ecige Dijkstra in 1976, and structured design was proposed by Larry Constantine and Edward Uden in 1975. [ML 1956] Miller, G. A., "The Magical Number Seven, Plus or Minus Two,". Advanced Software Technology Specialists, 17124 Lutz Road, Ossian, Indiana. The object-oriented analysis stage determines all objects and their attributes in the problem space and solution space through analysis, and then determines the operation of each object, that is, the ability to process transactions, and then determines the relationship between the objects through the behavior of the objects. More recently, OOD has included various forms of Object-Oriented Requirements Analysis. Hb```f`` ``c`ab@ (1x!jp t 301g8hA2`3c8 dG0`8X%i'WYK$ER2^H1.L@ ` endstream endobj 66 0 obj 152 endobj 23 0 obj << /Type /Page /Parent 18 0 R /Resources 24 0 R /Contents [ 33 0 R 35 0 R 39 0 R 45 0 R 49 0 R 51 0 R 53 0 R 55 0 R ] /MediaBox [ 0 0 612 792 ] /CropBox [ 0 0 612 792 ] /Rotate 0 >> endobj 24 0 obj << /ProcSet [ /PDF /Text ] /Font << /TT2 31 0 R /TT4 28 0 R /TT6 27 0 R /TT8 37 0 R /TT10 42 0 R /TT12 41 0 R /TT14 46 0 R >> /ExtGState << /GS1 59 0 R >> /ColorSpace << /Cs6 29 0 R >> >> endobj 25 0 obj << /Type /FontDescriptor /Ascent 891 /CapHeight 656 /Descent -216 /Flags 34 /FontBBox [ -568 -307 2000 1007 ] /FontName /FPENKE+TimesNewRoman /ItalicAngle 0 /StemV 94 /XHeight 0 /FontFile2 56 0 R >> endobj 26 0 obj << /Type /FontDescriptor /Ascent 905 /CapHeight 0 /Descent -211 /Flags 32 /FontBBox [ -665 -325 2000 1006 ] /FontName /FPENNF+Arial /ItalicAngle 0 /StemV 0 /XHeight 515 /FontFile2 63 0 R >> endobj 27 0 obj << /Type /Font /Subtype /TrueType /FirstChar 32 /LastChar 120 /Widths [ 278 0 0 0 0 0 0 0 333 333 0 0 278 333 278 278 556 556 556 0 556 0 556 0 556 0 0 0 0 0 0 0 0 667 0 0 0 667 611 0 0 0 500 0 0 833 0 778 0 0 0 667 0 0 667 0 0 0 0 0 0 0 0 0 0 556 556 500 556 556 0 556 556 222 222 0 222 0 556 556 556 0 333 500 278 556 500 722 500 ] /Encoding /WinAnsiEncoding /BaseFont /FPENNF+Arial /FontDescriptor 26 0 R >> endobj 28 0 obj << /Type /Font /Subtype /TrueType /FirstChar 32 /LastChar 150 /Widths [ 250 0 408 0 0 0 778 0 333 333 500 564 250 333 250 278 500 500 500 500 500 500 500 500 500 500 278 0 0 0 0 0 921 722 667 667 722 611 556 722 722 333 389 722 611 889 722 722 556 0 667 556 611 722 722 944 0 722 611 333 0 0 0 500 0 444 500 444 500 444 333 500 500 278 278 500 278 778 500 500 500 500 333 389 278 500 500 722 500 500 444 480 0 480 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 333 333 444 444 0 500 ] /Encoding /WinAnsiEncoding /BaseFont /FPENKE+TimesNewRoman /FontDescriptor 25 0 R >> endobj 29 0 obj [ /ICCBased 57 0 R ] endobj 30 0 obj << /Type /FontDescriptor /Ascent 1005 /CapHeight 0 /Descent -220 /Flags 32 /FontBBox [ -169 -307 1152 1060 ] /FontName /FPENID+CenturyGothic /ItalicAngle 0 /StemV 0 /FontFile2 58 0 R >> endobj 31 0 obj << /Type /Font /Subtype /TrueType /FirstChar 32 /LastChar 54 /Widths [ 277 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 554 554 554 554 554 ] /Encoding /WinAnsiEncoding /BaseFont /FPENID+CenturyGothic /FontDescriptor 30 0 R >> endobj 32 0 obj 1384 endobj 33 0 obj << /Filter /FlateDecode /Length 32 0 R >> stream The next stage guarantees the high quality of the software. uml oriented approach object 5th analysis systems edition wixom dennis tegarden alan barbara author Aspect-Oriented Software Development (AOSD).

Check if you have access through your login credentials or your institution to get full access on this article. 0000081280 00000 n 0000003776 00000 n Due to the iterative and incremental nature of object-oriented methods, object-oriented methods are more suitable for use in agile software development. 0000018419 00000 n 0000007310 00000 n 0000001267 00000 n The process of software development is that people use various computer languages to translate real-world problems into the computer world, which can be described as Figure (2): The programming idea of the structured method is top-down, gradual refinement, modular design according to the function of the system, and a complex and complete system is decomposed into small modules according to the function. Abstract : The essence of programming lies in programming ideas, and different programming methods have different programming ideas. [BU 1987] Bulman, Dave, "Model-Based Object-Oriented Design for Ada," Pragmatics, Inc., (808) 883-9011, 14 July 1987. A recent article published in Ada Letters by Ken Shumate [SH 1991] is illustrative of this controversy and has prompted this reply.It is the thesis of this paper that traditional Structured Analysis, even when modified for real-tim e systems, is a technically obsolete way to specify software requirements, and that Structure d Analysis and Object-Oriented Development are fundamentally incompatible and unnecessarily difficult for software engineers to combine effectively. The structured programming method has always been the basic programming method for programmers, and the popular object-oriented method in recent years has also been favored by people. 0000003562 00000 n For more information, visit. trailer << /Size 67 /Info 19 0 R /Root 22 0 R /Prev 193213 /ID[<7594f71f836e8e58862027f5ac65e3fa><9066559cdafe232ee69e3f27d1f574b2>] >> startxref 0 %%EOF 22 0 obj << /Type /Catalog /Pages 18 0 R /Metadata 20 0 R /PageLabels 17 0 R >> endobj 65 0 obj << /S 69 /L 183 /Filter /FlateDecode /Length 66 0 R >> stream Compared with structured, object-oriented is more in line with people's process and thinking method of things and solving problems.

In turn, these software qualities lead to an improved software development lifecycle and, hence, to better software. "Program Design By Informal English Descriptions,", [BA 1989] Bailin, Sidney C. "An Object-Oriented Requirements Specification Method,". In the end, the two methods are compared and analyzed, and the similarities and differences between the structured method and the object-oriented method of programming and the application of the two methods are compared. Therefore, it is more suitable for function-oriented systems such as operating systems and real-time processing systems. Keywords : structured method; object-oriented method; programming idea; re-abstraction; re-modularization; Structured methods and object-oriented methods are currently the most commonly used methods for software development. Object-oriented system analysis. The development process is from top to bottom, in accordance with the rigorous software development life cycle: planning, analysis, design, coding, testing and maintenance are developed stage by stage, and each stage is connected to each other. The problem is continuously refined by sorting out the internal structure of the objects and the relationships between the objects. 0000071414 00000 n 0000001624 00000 n 0000007814 00000 n The module is composed of sequence, branch and loop. We use cookies to ensure that we give you the best experience on our website. Copyright 2006 - 2022 The Canadian Center of Science and Education. Tom Di Mark and Edward Youden proposed structured analysis in 1975, which was gradually improved to form the structured method that is currently used in software development methods. Aspects are a natural evolution of the object-oriented paradigm. [HP 1987] Hatley, Derek J. and Pirbhai, Imtiaz A. The development process continuously improves the functions of the system through repeated iterations of functions. 0000145997 00000 n 0000010840 00000 n The various modules of the system communicate and connect through the transmission of data, which leads to the strong coupling of functional modules, and the coupling between modules reduces the structured program Reusability and maintainability. 0000012973 00000 n [RB 1991] Rumbaugh, James; Blaha, Michael; Premerlani, William; Eddy, Frederick and Lorensen, William. Based on these main advantages and disadvantages in structured analysis, design and implementation, structured is more suitable for function-oriented systems such as operating systems and real-time processing systems. In the early stage of structured development method development, the functional requirements and non-functional requirements of the system are fully structured, so that the software has high reliability. Journal of Shaanxi Normal University. In the software development method based on the "waterfall model", the software architecture is the core, and the structured design and analysis method is adopted to divide the life cycle of software development into six parts: planning, requirements analysis, software design, programming, software testing, and operation and maintenance. This alert has been successfully added and will be sent to: You will be notified whenever a record that you have chosen has been cited. [SH 1991] Shumate, Ken, "Structured Analysis and Object-Oriented Design are Compatible,". Overview and comparison of agile software development and traditional software engineering. 0000012507 00000 n The modeling techniques used are: data flow diagram DFD (Data Flow Diagram), ERD (Entity Relation Diagram) and data dictionary DD (Data Dictionary) and so on. 0000010618 00000 n They provide a solution to some difficulties you may have encountered with modularizing your object-oriented code: sometimes functionality just doesn't fit! 0000017351 00000 n 0000061638 00000 n This relationship is best demonstrated by the new software life cycle model-fountain model that has emerged in recent years. 0000002270 00000 n 0000009454 00000 n Good examples of this kind of code are audit trails, transaction handling, concurrency management, and so on. The structured design stage converts the specific information represented by the DFD of the physical model of the target system obtained in the analysis stage into a design description of the program structure, and transitions to a software structure. 0000001360 00000 n In the agile software development method that develops through iterative and incremental methods, object-oriented design and analysis methods are mainly used. Copyright 2022 ACM, Inc. [AB 1983] Abbott, Russell J. The main steps in the object-oriented design phase are as follows: Improve and perfect the analysis results of the system in the analysis stage; Design the interactive process and user interface; Design task management, subsystems and coordination methods among tasks; Design global resources and determine the resource allocation of tasks or subsystems; 2.3 Application of object-oriented methods. For example, traditional software engineering is more suitable for structured methods, while agile software development methods are more favored by object-oriented development methods. Comparison of object-oriented methods and structured methods. As shown in (3), The object-oriented method abstracts, classifies, inherits and encapsulates the things in the system by simulating the thinking methods and principles often used in human daily logical thinking. OOD has therefor e come into direct competition with Structured Analysis. The first step is to start from the analysis results, construct a design plan, and determine the structure of the system's functional modules. 2001, Reprinted at: https://www.cnblogs.com/maya389069192/p/6166238.html, Reference : https://blog.csdn.net/weixin_30466421/article/details/95100270. [FG 1991] Firesmith, Donald and Gaumer, Dale. Data plays an important role in the structured analysis method, which is equivalent to the blood vessel to the human body. However, due to structured analysis and design, the system performs complete structure and specific function analysis and rigorous testing at each stage of implementation , So the structured program has high reliability. The OOA stage and the OOD stage have no obvious division boundaries. 0000058961 00000 n The article introduces the analysis, design and application of the two main programming methods in the programming world, structured methods and object-oriented methods. 0000005524 00000 n Such as SCRUM, XP (Extreme Programming), CRYSTAL (Crystal Programming), PDD (Characteristic Driven Development), etc.

The modeling techniques used in this process are: System Struct Diagram (SSD). 1.1 Structured Analysis (Structured Analysis). 0000003523 00000 n 0000012951 00000 n 0000004018 00000 n 0000004040 00000 n 0000017372 00000 n 0000014616 00000 n Since their introduction in the early 1980s, various forms of Object-Oriented Development (OOD) have also become the preferred approach for the design and coding of Ada software. The two are connected to each other. To manage your alert preferences, click on the button below. 0000002489 00000 n Determine the connection of the entire system through the behavioral relationship between abstracted classes, instantiate the required objects in the system, and use human thinking as much as possible in the design of the system. Therefore, the object-oriented method is suitable for agile software development such as SCRUM, XP (extreme programming), CRYSTAL (crystal programming), and PDD (feature-driven development). 1998, [3] Cai Xiyao. HWKo7W[D8FQN[HhI,?RYv4fHR\V;y7Crz4BL+iBW+%X>^XGj;{BLgIz*F(Yk J*eGI?$cLx{~. [CB 1989] Colbert, Edward, "The Object-Oriented Software Development Method: A Practical Approach to Object-Oriented Development,". 0000001603 00000 n Google Scholar Citations(March 2022): 6907, Excellence in Research for Australia (ERA), The Index of Information Systems Journals, Cookies are used by this site. [1] Lei Xiling, Xie Tianbao, He Wenjuan. This process is completed in two steps. 0000010143 00000 n All Rights Reserved . 2016, [5] Zhang Li, Qiu Guoyong. 0000001831 00000 n Specific steps are as follows: Determine the problem domain and solution space; Distinguish the overall objects and components, determine the relationship and internal structure of the classes; Define the data (attributes) and operations of the class (the behavior of processing transactions); Determine additional system constraints, The object-oriented design stage is mainly to further standardize the results of the analysis stage to facilitate the specific realization later. Iterate and increment. The main analysis steps are as follows: Analyze the current situation and make a DFD reflecting the current physical model; Derive the DFD of the equivalent logical model; Design a new logic system, generate data dictionary and primitive description; Establish a man-machine interface, and propose DFD of the physical model of the target system for selection; 1.2 Structured Design (Structured Design). https://dl.acm.org/doi/abs/10.1145/122012.122013. Figure 1), View Image (1). 0000007836 00000 n The control structure is composed, and the functions of each module are realized by subroutines. %PDF-1.3 % Since its introduction in 1978, traditional Structured Analysis has been an industry standar d method for software requirements analysis that is supported by numerous CASE tools. 2001, [4] Weng Songxiu. [BR 1991] Berard, Edward V., "Object-Oriented Requirements Analysis," Berard Software Engineering, Inc., (301) 353-9652, 10 February 1991. For example, most operating systems are written in the structured language C. The object-oriented OO (Object Oriented) method applies object-oriented thinking to software development, classifies and encapsulates the data and related operations in the system, abstracts it into a new data structure-class, and gives examples in the implementation of the system Transformation, the instantiated object has a direct corresponding relationship with the objective entity, and the actual problem is solved through the object's attributes and behavior, and the relationship between the objects. 0000012728 00000 n The use of structured methods and object-oriented methods is related to specific development environments and development methods. The ACM Digital Library is published by the Association for Computing Machinery. The object-oriented method starts from the problem model, simulating peoples understanding of things to classify things, and then to identify objects. 0000007523 00000 n The implementation of software applications using AOSD techniques results in a better implementation structure which has an impact on many important software qualities such as enhanced reusability and reduced complexity. Comparison of structured method and object-oriented method, Beijing University of Aeronautics and Astronautics. Basic stage. Structured analysis and object-oriented development are not compatible, All Holdings within the ACM Digital Library. 0000005502 00000 n Comparative analysis of structured method and object-oriented method. [SM 1988] Shlaer, Sally and Mellor, Stephen J.. [WM 1985] Ward, Paul and Mellor, Stephen J.. [YC 1975] Yourdon, Edward and Constantine, Larry L., Structured Design. Yourdon Press, 1975. 0000016224 00000 n

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