The document provides an overview of object-oriented technology and software engineering approaches. It describes the structured and object-oriented approaches, the roles of modeling, notation, process and techniques in software development. It also summarizes the Unified Modeling Language (UML), Unified Process, View Alignment techniques, and the Visual Paradigm for UML (VP-UML) CASE tool.
an analysis and new methodology for reverse engineering of uml behavioralINFOGAIN PUBLICATION
The emergence of Unified Modeling Language (UML) as a standard for modeling systems has encouraged the use of automated software tools that facilitate the development process from analysis through coding. Reverse Engineering has become a viable method to measure an existing system and reconstruct the necessary model from its original. The Reverse Engineering of behavioral models consists in extracting high-level models that help understand the behavior of existing software systems. In this paper we present an ongoing work on extracting UML diagrams from object-oriented programming languages. we propose an approach for the reverse engineering of UML behavior from the analysis of execution traces produced dynamically by an object-oriented application using formal and semi-formal techniques for modeling the dynamic behavior of a system. Our methods show that this approach can produce UML behavioral diagrams in reasonable time and suggest that these diagrams are helpful in understanding the behavior of the underlying application.
THE UNIFIED APPROACH FOR ORGANIZATIONAL NETWORK VULNERABILITY ASSESSMENTijseajournal
The present business network infrastructure is quickly varying with latest servers, services, connections,
and ports added often, at times day by day, and with a uncontrollably inflow of laptops, storage media and
wireless networks. With the increasing amount of vulnerabilities and exploits coupled with the recurrent
evolution of IT infrastructure, organizations at present require more numerous vulnerability assessments.
In this paper new approach the Unified process for Network vulnerability Assessments hereafter called as
a unified NVA is proposed for network vulnerability assessment derived from Unified Software
Development Process or Unified Process, it is a popular iterative and incremental software development
process framework.
Integrating profiling into mde compilersijseajournal
Scientific computation requires more and more performance in its algorithms. New massively parallel
architectures suit well to these algorithms. They are known for offering high performance and power
efficiency. Unfortunately, as parallel programming for these architectures requires a complex distribution
of tasks and data, developers find difficult to implement their applications effectively. Although approaches
based on source-to-source intends to provide a low learning curve for parallel programming and take
advantage of architecture features to create optimized applications, programming remains difficult for
neophytes. This work aims at improving performance by returning to the high-level models, specific
execution data from a profiling tool enhanced by smart advices computed by an analysis engine. In order to
keep the link between execution and model, the process is based on a traceability mechanism. Once the
model is automatically annotated, it can be re-factored aiming better performances on the re-generated
code. Hence, this work allows keeping coherence between model and code without forgetting to harness the
power of parallel architectures. To illustrate and clarify key points of this approach, we provide an
experimental example in GPUs context. The example uses a transformation chain from UML-MARTE
models to OpenCL code.
STATISTICAL ANALYSIS FOR PERFORMANCE COMPARISONijseajournal
Performance responsiveness and scalability is a make-or-break quality for software. Nearly everyone runs into performance problems at one time or another. This paper discusses about performance issues faced during Pre Examination Process Automation System (PEPAS) implemented in java technology. The challenges faced during the life cycle of the project and the mitigation actions performed. It compares 3 java technologies and shows how improvements are made through statistical analysis in response time of the application. The paper concludes with result analysis.
an analysis and new methodology for reverse engineering of uml behavioralINFOGAIN PUBLICATION
The emergence of Unified Modeling Language (UML) as a standard for modeling systems has encouraged the use of automated software tools that facilitate the development process from analysis through coding. Reverse Engineering has become a viable method to measure an existing system and reconstruct the necessary model from its original. The Reverse Engineering of behavioral models consists in extracting high-level models that help understand the behavior of existing software systems. In this paper we present an ongoing work on extracting UML diagrams from object-oriented programming languages. we propose an approach for the reverse engineering of UML behavior from the analysis of execution traces produced dynamically by an object-oriented application using formal and semi-formal techniques for modeling the dynamic behavior of a system. Our methods show that this approach can produce UML behavioral diagrams in reasonable time and suggest that these diagrams are helpful in understanding the behavior of the underlying application.
THE UNIFIED APPROACH FOR ORGANIZATIONAL NETWORK VULNERABILITY ASSESSMENTijseajournal
The present business network infrastructure is quickly varying with latest servers, services, connections,
and ports added often, at times day by day, and with a uncontrollably inflow of laptops, storage media and
wireless networks. With the increasing amount of vulnerabilities and exploits coupled with the recurrent
evolution of IT infrastructure, organizations at present require more numerous vulnerability assessments.
In this paper new approach the Unified process for Network vulnerability Assessments hereafter called as
a unified NVA is proposed for network vulnerability assessment derived from Unified Software
Development Process or Unified Process, it is a popular iterative and incremental software development
process framework.
Integrating profiling into mde compilersijseajournal
Scientific computation requires more and more performance in its algorithms. New massively parallel
architectures suit well to these algorithms. They are known for offering high performance and power
efficiency. Unfortunately, as parallel programming for these architectures requires a complex distribution
of tasks and data, developers find difficult to implement their applications effectively. Although approaches
based on source-to-source intends to provide a low learning curve for parallel programming and take
advantage of architecture features to create optimized applications, programming remains difficult for
neophytes. This work aims at improving performance by returning to the high-level models, specific
execution data from a profiling tool enhanced by smart advices computed by an analysis engine. In order to
keep the link between execution and model, the process is based on a traceability mechanism. Once the
model is automatically annotated, it can be re-factored aiming better performances on the re-generated
code. Hence, this work allows keeping coherence between model and code without forgetting to harness the
power of parallel architectures. To illustrate and clarify key points of this approach, we provide an
experimental example in GPUs context. The example uses a transformation chain from UML-MARTE
models to OpenCL code.
STATISTICAL ANALYSIS FOR PERFORMANCE COMPARISONijseajournal
Performance responsiveness and scalability is a make-or-break quality for software. Nearly everyone runs into performance problems at one time or another. This paper discusses about performance issues faced during Pre Examination Process Automation System (PEPAS) implemented in java technology. The challenges faced during the life cycle of the project and the mitigation actions performed. It compares 3 java technologies and shows how improvements are made through statistical analysis in response time of the application. The paper concludes with result analysis.
Availability Assessment of Software Systems Architecture Using Formal ModelsEditor IJCATR
There has been a significant effort to analyze, design and implement the information systems to process the information and data, and solve various problems. On the one hand, complexity of the contemporary systems, and eye-catching increase in the variety and volume of information has led to great number of the components and elements, and more complex structure and organization of the information systems. On the other hand, it is necessary to develop the systems which meet all of the stakeholders' functional and non-functional requirements. Considering the fact that evaluation and assessment of the aforementioned requirements - prior to the design and implementation phases - will consume less time and reduce costs, the best time to measure the evaluable behavior of the system is when its software architecture is provided. One of the ways to evaluate the architecture of software is creation of an executable model of architecture.
The present research used availability assessment and took repair, maintenance and accident time parameters into consideration. Failures of software and hardware components have been considered in the architecture of software systems. To describe the architecture easily, the authors used Unified Modeling Language (UML). However, due to the informality of UML, they utilized Colored Petri Nets (CPN) for assessment too. Eventually, the researchers evaluated a CPN-based executable model of architecture through CPN-Tools.
Performance Evaluation using Blackboard Technique in Software ArchitectureEditor IJCATR
Validation of software systems is very useful at the primary stages of their development cycle. Evaluation of functional
requirements is supported by clear and appropriate approaches, but there is no similar strategy for evaluation of non-functional
requirements (such as performance). Whereas establishing the non-functional requirements have significant effect on success of
software systems, therefore considerable necessities are needed for evaluation of non-functional requirements. Also, if the software
performance has been specified based on performance models, may be evaluated at the primary stages of software development cycle.
Therefore, modeling and evaluation of non-functional requirements in software architecture level, that are designed at the primary
stages of software systems development cycle and prior to implementation, will be very effective.
We propose an approach for evaluate the performance of software systems, based on black board technique in software architecture
level. In this approach, at first, software architecture using blackboard technique is described by UML use case, activity and
component diagrams. then UML model is transformed to an executable model based on timed colored petri nets(TCPN)
Consequently, upon execution of an executive model and analysis of its results, non-functional requirements including performance
(such as response time) may be evaluated in software architecture level.
Presentation covers all aspects about Software Designing that are followed by Software Engineering Industries. Readers can do detailed study about the Software Design Concepts like (Abstraction, Architecture, Patterns, Modularity, Information Hiding, Refinement, Functional Dependence, Cohesion, Coupling & Refactoring) plus Design Process.
Later then Design Principles are there to understand with Architectural Design, Architectural Styles, Data Centered Architecture, Data Flow Architecture, Call & Return Architecture, Object Oriented Architecture, Layered Architecture with other architectures are named at end of it.
Later then, Component Level Design is discussed. Then after UI Design & Rules of it, UI Design Models, Web Application Design, WebApp Interface Design are discussed at the end.
Comment back if you have any query about it.
This Presentation contains all the topics in design concept of software engineering. This is much more helpful in designing new product. You have to consider some of the design concepts that are given in the ppt
Availability Assessment of Software Systems Architecture Using Formal ModelsEditor IJCATR
There has been a significant effort to analyze, design and implement the information systems to process the information and data, and solve various problems. On the one hand, complexity of the contemporary systems, and eye-catching increase in the variety and volume of information has led to great number of the components and elements, and more complex structure and organization of the information systems. On the other hand, it is necessary to develop the systems which meet all of the stakeholders' functional and non-functional requirements. Considering the fact that evaluation and assessment of the aforementioned requirements - prior to the design and implementation phases - will consume less time and reduce costs, the best time to measure the evaluable behavior of the system is when its software architecture is provided. One of the ways to evaluate the architecture of software is creation of an executable model of architecture.
The present research used availability assessment and took repair, maintenance and accident time parameters into consideration. Failures of software and hardware components have been considered in the architecture of software systems. To describe the architecture easily, the authors used Unified Modeling Language (UML). However, due to the informality of UML, they utilized Colored Petri Nets (CPN) for assessment too. Eventually, the researchers evaluated a CPN-based executable model of architecture through CPN-Tools.
Performance Evaluation using Blackboard Technique in Software ArchitectureEditor IJCATR
Validation of software systems is very useful at the primary stages of their development cycle. Evaluation of functional
requirements is supported by clear and appropriate approaches, but there is no similar strategy for evaluation of non-functional
requirements (such as performance). Whereas establishing the non-functional requirements have significant effect on success of
software systems, therefore considerable necessities are needed for evaluation of non-functional requirements. Also, if the software
performance has been specified based on performance models, may be evaluated at the primary stages of software development cycle.
Therefore, modeling and evaluation of non-functional requirements in software architecture level, that are designed at the primary
stages of software systems development cycle and prior to implementation, will be very effective.
We propose an approach for evaluate the performance of software systems, based on black board technique in software architecture
level. In this approach, at first, software architecture using blackboard technique is described by UML use case, activity and
component diagrams. then UML model is transformed to an executable model based on timed colored petri nets(TCPN)
Consequently, upon execution of an executive model and analysis of its results, non-functional requirements including performance
(such as response time) may be evaluated in software architecture level.
Presentation covers all aspects about Software Designing that are followed by Software Engineering Industries. Readers can do detailed study about the Software Design Concepts like (Abstraction, Architecture, Patterns, Modularity, Information Hiding, Refinement, Functional Dependence, Cohesion, Coupling & Refactoring) plus Design Process.
Later then Design Principles are there to understand with Architectural Design, Architectural Styles, Data Centered Architecture, Data Flow Architecture, Call & Return Architecture, Object Oriented Architecture, Layered Architecture with other architectures are named at end of it.
Later then, Component Level Design is discussed. Then after UI Design & Rules of it, UI Design Models, Web Application Design, WebApp Interface Design are discussed at the end.
Comment back if you have any query about it.
This Presentation contains all the topics in design concept of software engineering. This is much more helpful in designing new product. You have to consider some of the design concepts that are given in the ppt
‘O’ Model for Component-Based Software Development Processijceronline
The technology advancement has forced the user to become more dependent on information technology, and so on software. Software provides the platform for implementation of information technology. Component Based Software Engineering (CBSE) is adopted by software community to counter challenges thrown by fast growing demand of heavy and complex software systems. One of the essential reasons behind adopting CBSE for software development is the fast development of complicated software systems within well-defined boundaries of time and budget. CBSE provides the mechanical facilities by assembling already existing reusable components out of autonomously developed pieces of the software. The paper proposes a novel CBSE model named as O model, keeping an eye on the available CBSE lifecycle.
Reverse Engineering for Documenting Software Architectures, a Literature ReviewEditor IJCATR
Recently, much research in software engineering focused on reverse engineering of software systems which has become one
of the major engineering trends for software evolution. The objective of this survey paper is to provide a literature review on the
existing reverse engineering methodologies and approaches for documenting the architecture of software systems. The survey process
was based on selecting the most common approaches that form the current state of the art in documenting software architectures. We
discuss the limitations of these approaches and highlight the main directions for future research and describe specific open issues for
research.
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2. 2
What You Will Learn
Describe the advantages of the object-
oriented approach to software development.
Discuss the roles of the three key
components in software development.
Describe at a high level what the Unified
Modeling Language, the Unified Process, the
View Alignment Techniques, and the Visual
Paradigm for UML are.
3. 3
Software Engineering
Approaches
The development of reliable software is a
labor-intensive and expensive business.
Software development is also a high-risk
venture, as can be seen by the countless
documented reports of software project
failures.
The rapid growth of the software industry over
the past three decades has highlighted the
need for disciplined approaches to
developing large-scale software systems.
4. 4
Software Engineering
Approaches (cont’d)
Difficulties in developing large-scale
software systems:
Long development time => technology
changes, requirement changes
Large team => communication problem
5. 5
Modeling
Modeling is a very important activity in
software development in that the software
engineer usually spends a lot of time
developing models with different levels of
abstraction before the software system is
finally designed and implemented.
Models can be an effective communication
tool, especially in situations where detailed
information is not required.
6. 6
Modeling (cont’d)
Different stakeholders want different level of
abstractions.
Example – Bus Information System:
A model for the passenger. It can be represented by a
straight line with circles on it, showing the bus stop names
and possibly the associated fares.
A model for the bus driver. It may be a simplified map
showing the route covered by a bus service. Street names
and the actual route will also be included to provide more
details to the driver.
A model for the planner of bus routes. It may consist of a
detailed road map with the actual bus routes. Each bus
route is labeled and shown in different colors.
7. 7
Modeling (cont’d)
A model usually provides one or more views, and
each view represents a specific aspect of the
system. For example, the model for the passenger
contains the fare view and the path view.
The fare view provides fare information for every
stop on a route, while the path view provides the
route information, including the associated street
names.
Models based on different views of a system must
be consistent, for example, the three dimensional
model of a building must be consistent with the
different elevations (models) of the same building.
8. 8
Modeling (cont’d)
Furthermore, a model should be expressed using a
suitable notation (language) that can be understood
by the stakeholders.
In the context of software development, a system
can be adequately described by the following three
orthogonal views:
a functional view, which covers the transformation of data
within the software system;
a static view, which covers the structure of the system and
its associated data; and
a dynamic view, which covers the sequence or procedure
of a transaction in the software system.
9. 9
Structured Approach
Broadly speaking, there are two general approaches
to software development: the structured approach
and the object-oriented approach.
The structured approach has been very fashionable
since the 1970s; it was adequately supported by
conventional procedural languages.
The structured approach is centered on the
system’s functional views and uses different models
at various stages of the development process.
When development progresses from one stage to
the next, the models in the current stage are
transformed into the models of the next stage.
10. 10
Structured Approach (cont’d)
There are three major weaknesses with the
structured approach:
when functions of the system change => the analysis, the
design models and the implementation of the system will
have to be changed substantially.
transformation needs to be carried out whenever the
models of the early stages have changed as a result of
changes in the requirements or the correction of previous
mistakes.
the dynamic view is almost non-existent in the structured
approach.
The above weaknesses of the structured approach
have made it less cost-effective when compared
with the object-oriented approach.
11. 11
Object-oriented Approach
This approach models a software system as a
collection of collaborating objects.
An object and its data interact with other objects
through messages being sent and received by the
object and which manipulate the object’s data in the
process.
The object-oriented approach allows the software
engineer to develop consistent models of a software
system much more easily, because the same set of
models are used throughout the whole development
process.
12. 12
Object-oriented Approach (cont’d)
No effort or time is wasted by transforming and
updating models in different stages.
Changes to an object-oriented system are localized
in the objects themselves.
Therefore, the structure of a system developed by
the object-oriented approach is more stable than
that by the structured approach.
13. 13
Visual Modeling
The human brain is capable of handling and
processing only a limited amount of information at
any one time.
Models can help reduce complexity by creating an
abstract hierarchical representation of the real-world
system.
Visual modeling is the process of representing a
system with essential parts from a particular
perspective using some standard graphical
notations.
14. 14
Visual Modeling (cont’d)
In the software development process, visual
modeling can:
capture business objects and logic;
analyze and design applications;
manage complexity;
define the software architecture; and
model systems independent of the implementation
language.
The modeling language of choice to software
engineers is the Unified Modeling Language (UML)
15. 15
Software Development
Methods
Representation
How to describe the
design model
(e.g. UML)
Process
What to do to produce the
design model
(e.g. Unified Process)
Techniques
How to adapt the models
to particular types of
problems
(e.g. heuristics and
procedures)
16. 16
Role of Notation
Capture requirements of the system;
Analyze the system by developing suitable analysis models -
Models are expressed in an appropriate notation so that the
developer can easily find the things from which he or she can
quickly extract information;
Develop the design of the system - Design models are
developed and expressed in an appropriate notation that can
be understood by the system designer and the programmer.
The system designer may need to manipulate the analysis
model and make design decisions in the process; and
Implement, test and deploy the system - Again, the artifacts of
these activities are expressed in a suitable notation that can be
understood by the system designer, the programmers and
system testers.
17. 17
Role of Process
Ideally, a process should offer the following features:
a well-managed iterative and incremental life cycle to provide the
necessary control without affecting creativity;
embedded methods, procedures and heuristics for developers to
carry out analysis, design and implementation for the whole
software development life cycle (SDLC);
a guide through the iterative and incremental development
process for the solution of complex problems;
a comprehensive roadmap so that designers can walk through the
flexible multiple pathways of the development process depending
on the nature of the problem; and
identification of less obvious requirements based on what have
already been known or modeled.
18. 18
Role of Techniques
The main purpose of the techniques part of a method is to
provide a set of guidelines and heuristics to help the developer
to systematically develop the required design models and
implementation.
The techniques part of a method should include the following:
a set of guidelines to produce and verify the design against the
original requirements and specifications;
a set of heuristics for the designer to ensure consistency in the
structure of a design and also the design models. The latter
requirement is particularly important when the design is produced
by a team of designers who will need to ensure that their models
are consistent and coherent;
a system to capture the essential features of the design so as to
supplement the limited designer’s domain knowledge.
19. 19
Overview of the UML
The UML is accepted by the Object Management Group
(OMG) as a standard way of representing object-oriented
analysis and design models.
It has quickly become the de facto standard for building object-
oriented software.
The OMG specification states:
“The Unified Modeling Language (UML) is a graphical language
for visualizing, specifying, constructing, and documenting the
artifacts of a software-intensive system. The UML offers a
standard way to write a system's blueprints, including conceptual
things such as business processes and system functions as well
as concrete things such as programming language statements,
database schemas, and reusable software components.”
Refer to Appendix B of the book for a more detailed
description of the UML.
20. 20
Overview of the
Unified Process
The Unified Process is a widely used software development
process.
In the Unified Process, a system is built incrementally through
a number of iterations in which the designer may perform
requirements capturing, analysis, design, implementation and
testing tasks.
Feedback is sought from system users throughout the entire
process.
In early iterations, the designer often focuses more on
requirements capturing and analysis.
In later iterations, the designer tends to emphasize
implementation and testing.
In fact, the iterations are divided into four phases: inception,
elaboration, construction and transition, each with a different
focus.
22. 22
Overview of the View
Alignment Techniques
The key concept of the View Alignment Techniques is based
on the idea that models for different perspectives must contain
some common elements (linked elements).
Thus we can simply start off with one model and generate a
(partial) model by identifying and using the linked elements.
By filling in (elaborating) the missing information in the partially
complete model and identifying more linked elements, we can
create other models for different perspectives.
Through this incremental and iterative process, we can create
all the models required.
Once we have developed all the models that describe the
different perspectives of a system, we should be able to form a
complete and consistent picture of the system by consolidating
(aligning) these views.
23. 23
Overview of the View
Alignment Techniques (cont’d)
Therefore, by using the View Alignment Techniques
framework, we not only can ensure the models developed are
consistent, we can also systematically identify the sequence in
which the models should be developed.
In other words, View Alignment Techniques can help
designers customize their method as they develop the system.
24. 24
Overview of Visual
Paradigm for UML
CASE tools can significantly help developers increase their
productivity, particularly if they provide facilities that automate
many model building procedures.
Indeed, some CASE tools offer sophisticated facilities such as
diagram-to-code and code-to-diagram, with real-time
synchronization and consistency maintained in both directions.
VP-UML, like most leading CASE tools, meets the following
requirements:
Facilitate convenient model building. Models of the system should
be easily developed. Editor and documentation tools should be
provided and easy to use;
Serve as repository. Models can be saved and retrieved with
ease;
Support navigation. Linkages between models can be maintained
and traversed;
25. 25
Overview of Visual
Paradigm for UML
Generate documentation automatically. Documentations can be
generated for selected information of the software development
project;
Facilitate project management. The project activities can be
planned and managed with ease;
Facilitate configuration management and version control.
Documentations and components of different versions of the
system can be managed;
Check model consistency. Consistency between models of the
system can be checked;
Support model verification and validation. The correctness of the
models of the system can be verified and validated;
Provide multi-user support. Multiple developers can work on the
project simultaneously and coherently;
Generate code. Code can be generated from models;
26. 26
Overview of Visual
Paradigm for UML
Reverse engineering. Models can be generated from code; and
Provide integration with other tools. The CASE tool can be
integrated with domain specific systems or tools so as to
accelerate the development process.
Appendix A of the book provides more information about how
you can get started using the VP-UML CASE tool.