Section 4 will explore lessons learned. Arch can be analyzed for various non-functional attributes like performance, reliability, security, etc. Srinivas Kolluri 0000001205 00000 n ATAM was developed by the Software Engineering Institute at the Carnegie Mellon University. 0000014425 00000 n t � 6������� ��6� � � �� �� �� ��� 4� 4� Share yours for free! •The information about architectural desi Mar 30, 2018 - Explore Mate Thitisawat's board "Program Analysis", followed by 366 people on Pinterest. There are known patterns to achieve various qualities and functionality. 0000002600 00000 n W e have done this using Rational Rose. INCLUDEPICTURE "http://www.cs.cmu.edu/~acme/docs/images/SimpleClientServer.png" \* MERGEFORMATINET Figure SEQ Figure \* ARABIC 13 : Simple Client-Server Diagram The client component is declared to have a single send-request port, and the server has a single receive-request port. State Machine When designing state machine architecture, the states of the program that can be in are identified, together with legal transitions between them. There are many other examples at the software level that have implications on the underlying CPU pipelines. 99 18 Several techniques have been introduced to improve the quality of system through the software architecture Then from these drivers quality attributes and business scenarios are created. We begin with a discussion of the relationship among software architecture, quality attributes, and sce-narios. 0000001564 00000 n It has the following limitations − Lack of tools and standardized ways to represent architecture. Figure SEQ Figure \* ARABIC 3: Two pipe-and filter systems, one very simple Example: A system needed to count the frequency of different words in a file: One approach: first split the file into a sequence of words, sort them, then count the number of occurrences. 5. 1. (The first time, this will likely be the entire system itself.) � � � � � � � � t W $ t � 6������� ��6� � � �� �� �� ��� 4� 4� Choose the solutions that are most appropriate for the high priority architectural drivers. 2 1. Only one connector style in this � read/write Figure SEQ Figure \* ARABIC 7: Example Client-Server Architecture This architecture is especially fit when the hardware is organized as a number of local computers (e.g. ��ࡱ� > �� � � ���� � � � � � � � � � � � � � � � � � � ������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������ � �� 0 ED bjbj���� 7� �� �� �; n �� �� �� � ] ] � � � ���� � � � � � � � � �� Z � � G G G G �# @ $ $ u� w� w� w� w� w� w� $ P� � � � �� � "$ F# | �# "$ "$ �� ] ] G G � �� v' v' v' "$ � ] R G � G u� v' "$ u� v' v' b �� $ � " �� G ���� ������� � �$ � �� V a� Ƙ 0 �� � � Ğ �% � Ğ � �� �� � Ğ � }� � "$ "$ v' "$ "$ "$ "$ "$ �� �� v' "$ "$ "$ �� "$ "$ "$ "$ ���� ���� ���� ���� ���� ���� ���� ���� ���� ���� ���� ���� ���� ���� ���� ���� ���� Ğ "$ "$ "$ "$ "$ "$ "$ "$ "$ # : Software Architecture Design and AnalysisSoftware Architecture Course[18-04-2009] Introduction Software architecture is the study of large software systems, from the perspective of their structure. Step 7: Verify and refine requirements and make them constraints for instantiated elements, that to refine the quality, business, and functional goals and constraints and allocate them to the newly created design elements, which will be the subject of future iterations. 0000007638 00000 n In the Capstone Project you will document a Java-based Android application with UML diagrams and analyze evaluate the application’s architecture using the Architecture Tradeoff Analysis Method (ATAM). Representations (methodologies): ADD method ATAM method ADD method: What is ADD? Intuitively, they correspond to the boxes in box-and line descriptions of software architectures. It is easy to extend if a scheduler is needed, it is added as a new accesso , no existing component needs to be changed. The following diagram displays a conceptual flow of the ATAM: INCLUDEPICTURE "http://www.sei.cmu.edu/architecture/atam_flow.gif" \* MERGEFORMATINET Figure SEQ Figure \* ARABIC 2: The conceptual flow of ATAM The ATAM process consists of gathering stakeholders together to analyze business drivers and from these drivers extract quality attributes that are used to create scenarios. l a� yt�-� $����&�#$/�� If gd�-� gd�hD N O P Q R � � S � M kd& $$If �l � �� � Most of the time your professors restrict you to a specific board size and number of boards. Limitations Software architecture is still an emerging discipline within software engineering. Present a scenario for this given requirement. Systems: represent configurations of components and connectors. 0 �Ϸ��xaJa2 /h�hD h?`� 5�B*CJ OJ QJ \�^J aJ ph -h�hD h+� B*CJ OJ PJ QJ ^J aJ ph -h�hD hh9 B*CJ OJ PJ QJ ^J aJ ph )h�hD h�u B*CJ OJ QJ ^J aJ ph )h�hD hF@ B*CJ OJ QJ ^J aJ ph )h�hD hp:� B*CJ OJ QJ ^J aJ ph /h�hD h� 5�B*CJ OJ QJ \�^J aJ ph /h�hD h�\ 5�B*CJ OJ QJ \�^J aJ ph /h�hD h�1@ 5�B*CJ OJ QJ \�^J aJ ph Step 4: Choose a design concept that satisfies the architectural drivers, thats to choose patterns and tactics to satisfy the architectural drivers. 0000003126 00000 n Styles Definition: Style of software architecture is an established pattern of components with a name, such as client-server architecture. Proven benefits of the ATAM include: clarified quality attribute requirements. Its architecture design is developed by taking sets of quality attribute scenario inputs and using knowledge of relationship between quality attribute access and architecture. l a� yt�-� M kd $$If �l � �� � It has the following limitations − Lack of tools and standardized ways to represent architecture. 3 1.1 What Software Architecture Is and What It Isn’t 4 1.2 Architectural Structures and Views 9 1.3 Architectural Patterns 18 1.4 What Makes a “Good” Architecture? 4. Architecture is a high level design. The Top-down Microarchitecture Analysis Method based on the Top-Down Characterization methodology aims to provide an insight into whether you have made wise choices with your algorithms and data structures. Analyze architectural approaches - Perform step 6 again with the added knowledge of the larger stakeholder community. ADD essentially follows a �Plan, Do, and Check� cycle: Plan: Quality attributes and design constraints are considered to select which types of elements will be used in the architecture. Present the Architecture - The architect presents the high level architecture to the team, with an 'appropriate level of detail. Generate Quality Attribute Utility Tree - Define the core business and technical requirements of the system, and map them to an appropriate architectural property. State machines are well known to mathematicians, and can be thoroughly investigated and validated regarding loops, illegal states etc, which makes this style common in safety critical systems. m SAAM will be described in Section 2. Many are downloadable. Present Business Drivers - Everyone in the process presents and evaluates the business drivers for the system in question. Object orientation is one of the most widely spread architectural styles, both in education, industrial practice and science. Components: the primary computational elements and data stores of a system. State machines are particularly well suited for graphical description. The connector has two roles designated caller and callee. HYPERLINK "http://www.sei.cmu.edu/architecture/ata_method.html" http://www.sei.cmu.edu/architecture/ata_method.html HYPERLINK "http://en.wikipedia.org/wiki/Atam" http://en.wikipedia.org/wiki/Atam HYPERLINK "http://www.ifi.uzh.ch/swe/teaching/courses/seminar2004/abgaben/Hunt-Acme.pdf" http://www.ifi.uzh.ch/swe/teaching/courses/seminar2004/abgaben/Hunt-Acme.pdf Presented by: Israa Mostafa Islam Neveen Adel Mohamed Omnia Ibrahim Ahmed Presented to: Dr. Hany Ammar - . Further, it involves a set of significant decisions about the organization relat… t � 6������� ��6� � � �� �� �� ��� 4� 4� You, also, need to decide if you will be presenting your board’s side by side as one big board, one poster … (Chapter 11) CBAM (2001/SEI) Cost Benefit Analysis Method (Chapter 12) Software Architecture in Practice, Len Bass, Paul Clements, Rick Kazman (Chapter 11) It is the leading method in the area of software architecture evaluation. The visual notation of the DAOP-ADL language is HYPERLINK "http://caosd.lcc.uma.es/CAM-DAOP/CAM.htm" CAM (Component-Aspect Model). Abhinav Pradhan 7. Learn new and interesting things. Evaluating Software Architectures Methods and Case Studies, by Paul Clements, Rick Kazman, and Mark Klein. Software architecture has a great influence on system performance as well as maintainability. The method has been used for designing the software architecture of products ranging from embedded to information systems. See the This process is repeated until all architecturally significant requirements are met. Informally they provide the ''glue'' for architectural designs, and intuitively, they correspond to the lines in box-and-line descriptions. It concerns itself with achieving non-functional qualities (portability, scalability, performance, modifiability, inerrability, etc.) %PDF-1.6 %���� SOFTWARE ARCHITECTURE ANALYSIS METHODS 2.1 Scenario-based analysis method Scenario-based analysis method was developed in 1993 to better understand the general concepts of architecture. t � 6������� ��6� � � �� �� �� ��� 4� 4� &F � � ���� �r�]���^� `�r�a$gd�~k ���� �r�d� �d �d [$\$]���^� `�r�gd�� $���� �r�]���^� `�r�a$gd�� ���� �r�]���^� `�r�gd�� It might also be the case that the system must communicate in a more complex way than is implicated by the layering, due to performance considerations. Steps 5 and 6: Instantiate architectural elements and allocate responsibilities and Define interfaces for insatantiated elements, that's to instantiate the pattern and tactics to create new design elements within the element. xref &. Software Architecture Analysis Method (SAAM) Lecture 7A •This set of slides are provided for th e information on the case study of applying Software Architecture Analysis Me thod (SAAM) to the evaluation of architectural designs of a software that extract keyword frequency vectors from text files. 4 7 Software Architecture Foundations, Theory, and Practice Architectural Analysis Goals – Completeness Completeness is both an external and an internal goal It is external with respect to system requirements Challenged by the complexity of large systems’ requirements and architectures Challenged by the many notations used to capture complex requirements as well as architectures An evaluation using the ATAM typically takes three to four days and gathers together a trained evaluation team, architects, and representatives of the architecture's various stakeholders. reusable set of well-defined functionality that encapsulates its implementation and exporting it as a higher-level interface It provides a framework on which to base design. Unfortunately, software architecture is still an emerging discipline within software engineering; limitations: •lack of standardized ways to represent architecture •lack of analysis methods to predict whether an architecture will result in an implementation that meets the requirements. ADD follows a recursive design process that decomposes a system or system element by applying architectural tactics and patterns that satisfy its driving requirements. t � 6������� ��6� � � �� �� �� ��� 4� 4� startxref increased communication among stakeholders. It was a basis to demonstrate that a software system meets more than one requirement (Kazman R 1993, Kazman R 1993). In software engineering, Architecture Tradeoff Analysis Method (ATAM) is a risk-mitigation process used early in the software development life cycle. This is in contrast to traditional computer science approaches to the design and creation of software systems, which emphasize data structures and algorithms over structure. See more ideas about diagram architecture, concept diagram, architecture presentation. Figure SEQ Figure \* ARABIC 5: The layered architecture of a personal Blackboard Architecture A blackboard (or repository) architecture draws the attention to the data in the system. The ADD method is an approach to defining a software architecture in which the design process is based on the software�s quality attribute requirements. Software architecture is still an emerging discipline within software engineering. 0000014666 00000 n Architecture serves as a blueprint for a system. personal workstations) and one central resource such as a file tree, database, or a cluster of powerful central calculation computers. &F � 7� ����r�� ]���^�r�`� a$gd�hD $ � � ���� �r�]���^� `�r�a$gd�� $ Architecture Tradeoff Analysis Method [ATAM]: What is ATAM? Assign each new element its functionality and sketch an interface for it showing information flow. This provides the presenter with the power to rescale, resize, reshape, re-color, add or even remove any visual element without the loss of quality. The Software Architecture Analysis tool can be applied to XMI output generated by a UML modelling tool. Figure SEQ Figure \* ARABIC 8: A view of a (hardware) client-server system Process Control Real-world systems often control a physical reality, such as control systems in a power plant. trailer 2. Keywords— software architecture, analysis, metric collection I. INTRODUCTION The first step in making good software is making a identified risks early in the life-cycle . Reference: HYPERLINK "http://caosd.lcc.uma.es/CAM-DAOP/DAOP-ADL.htm" http://caosd.lcc.uma.es/CAM-DAOP/DAOP-ADL.htm Rikard Land, �lardalen University, Department of Computer Engineering, Brief Survey of Software Architecture. It is Attribute-Driven Design, a method for designing the software architecture of a system or collection of systems based on an explicit articulation of the quality attribute goals for the system(s). Analyze architectural approaches - Analyze each scenario, rating them by priority. 1.1 Software architecture There are a number of software paradigms for process control. This method is based on understanding the relationship between software qualities and the architecture mechanisms used to achieve these qualities. A flexible annotation mechanism supporting association of non-structural information using externally defined sublanguages. improved architecture documentation. Pages in category "Software architecture" The following 184 pages are in this category, out of 184 total. Allowing design to begin early enough in the life cycle to support modern time-to-market requirements. They may also need to be secure, interoperable, portable, and reliable. The architecture of this system can naturally use the pipe and filter style. ADD Steps: Figure SEQ Figure \* ARABIC 1: ADD Steps Step 1: Confirm there is sufficient requirements information. 0000002149 00000 n Hong Zhang 3. DAOP-ADL It is an architecture description language used to describe components and aspects, together with the composition rules that govern the weaving of components and aspects. Document the architecture in sufficient detail and in an easily accessible form to facilitate communication with developers and other stakeholders and to support analysis. PASA uses scenarios to determine a system’s performance objectives and applies principles and techniques from … The desired scenarios are mapped onto architectural components to assess the architecture's capability to support those scenarios or identify the changes required to handle those scenarios. The control loop may be of feedback or feed-forward type. What precisely do these quality attributes such as modifiability, security, performance, and reliability mean? In software engineering, architecture tradeoff analysis method is a risk-mitigation process used early in the software development life cycle. 116 0 obj<>stream Figure SEQ Figure \* ARABIC 9: A state machine Architecture Description Language(ADL) An ADL is a language that provides features for modeling a software system�s conceptual architecture, distinguished from the system�s implementation. Get ideas for your own presentations. 740f02presentations22 3 Software Architecture Analysis Methods Presented By 1. 0000003203 00000 n Analysis Results Presentation 4 Create Test Case Architecture Analysis 3 Architecture QAW Process QAW activity You can enjoy the same liberty with textual content as well. t � 6������� ��6� � � �� �� �� ��� 4� 4� 0000001069 00000 n In its pure form, communications between the different layers must only occur in the interfaces between two adjacent layers. ATAM (trade-off analysis method) NIMBSAD (normative information model based system analysis and design). j x y 3 Steps of the ATAM Process: Present ATAM - Present the concept of ATAM to the stakeholders, and answer any questions about the process. Lack of analysis methods to predict whether architecture will result in an implementation that meets the requirements. 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