The document discusses the transition from analysis to design in software engineering. It describes the differences between analysis and design, logical and physical design, and system and detailed design. It also covers the characteristics of a good design, including functionality, efficiency and usability, and explains that trade-offs often need to be made between these characteristics during the design process. Measurable objectives are important to quantify design goals and allow them to be tested. Careful planning is also required for the design stage.
what is Software Generic Design Process.
Software Generic Design Process
what is software generic model
what is software process model
what is sdlc model
how to use design process model in software
what is Software Generic Design Process.
Software Generic Design Process
what is software generic model
what is software process model
what is sdlc model
how to use design process model in software
My name K.Yesubabu Setty from Hyderabad, India.This ppt includes the information about Software system development tools,methodologies, design. A brief explanation about software system.
My name K.Yesubabu Setty from Hyderabad, India.This ppt includes the information about Software system development tools,methodologies, design. A brief explanation about software system.
This ppt covers the following topics :-
Introduction
Design quality
Design concepts
The design model
Thus it covers design engineering in software engineering
for coding and implementation, there is a need of more specific and detailed requirements. The output of this process can directly be used into implementation in programming languages.
This is take two of the presentation, some things added, some removed, but still the regurgitation is best..
The purpose is to raise your awareness of software architecture in light of modern day agile development. Disciplines to incorporate and reconsider
HCI 3e - Ch 6: HCI in the software processAlan Dix
Chapter 6: HCI in the software process
from
Dix, Finlay, Abowd and Beale (2004).
Human-Computer Interaction, third edition.
Prentice Hall. ISBN 0-13-239864-8.
http://www.hcibook.com/e3/
6th International Conference on Machine Learning & Applications (CMLA 2024)ClaraZara1
6th International Conference on Machine Learning & Applications (CMLA 2024) will provide an excellent international forum for sharing knowledge and results in theory, methodology and applications of on Machine Learning & Applications.
Final project report on grocery store management system..pdfKamal Acharya
In today’s fast-changing business environment, it’s extremely important to be able to respond to client needs in the most effective and timely manner. If your customers wish to see your business online and have instant access to your products or services.
Online Grocery Store is an e-commerce website, which retails various grocery products. This project allows viewing various products available enables registered users to purchase desired products instantly using Paytm, UPI payment processor (Instant Pay) and also can place order by using Cash on Delivery (Pay Later) option. This project provides an easy access to Administrators and Managers to view orders placed using Pay Later and Instant Pay options.
In order to develop an e-commerce website, a number of Technologies must be studied and understood. These include multi-tiered architecture, server and client-side scripting techniques, implementation technologies, programming language (such as PHP, HTML, CSS, JavaScript) and MySQL relational databases. This is a project with the objective to develop a basic website where a consumer is provided with a shopping cart website and also to know about the technologies used to develop such a website.
This document will discuss each of the underlying technologies to create and implement an e- commerce website.
Harnessing WebAssembly for Real-time Stateless Streaming PipelinesChristina Lin
Traditionally, dealing with real-time data pipelines has involved significant overhead, even for straightforward tasks like data transformation or masking. However, in this talk, we’ll venture into the dynamic realm of WebAssembly (WASM) and discover how it can revolutionize the creation of stateless streaming pipelines within a Kafka (Redpanda) broker. These pipelines are adept at managing low-latency, high-data-volume scenarios.
Hierarchical Digital Twin of a Naval Power SystemKerry Sado
A hierarchical digital twin of a Naval DC power system has been developed and experimentally verified. Similar to other state-of-the-art digital twins, this technology creates a digital replica of the physical system executed in real-time or faster, which can modify hardware controls. However, its advantage stems from distributing computational efforts by utilizing a hierarchical structure composed of lower-level digital twin blocks and a higher-level system digital twin. Each digital twin block is associated with a physical subsystem of the hardware and communicates with a singular system digital twin, which creates a system-level response. By extracting information from each level of the hierarchy, power system controls of the hardware were reconfigured autonomously. This hierarchical digital twin development offers several advantages over other digital twins, particularly in the field of naval power systems. The hierarchical structure allows for greater computational efficiency and scalability while the ability to autonomously reconfigure hardware controls offers increased flexibility and responsiveness. The hierarchical decomposition and models utilized were well aligned with the physical twin, as indicated by the maximum deviations between the developed digital twin hierarchy and the hardware.
HEAP SORT ILLUSTRATED WITH HEAPIFY, BUILD HEAP FOR DYNAMIC ARRAYS.
Heap sort is a comparison-based sorting technique based on Binary Heap data structure. It is similar to the selection sort where we first find the minimum element and place the minimum element at the beginning. Repeat the same process for the remaining elements.
Water billing management system project report.pdfKamal Acharya
Our project entitled “Water Billing Management System” aims is to generate Water bill with all the charges and penalty. Manual system that is employed is extremely laborious and quite inadequate. It only makes the process more difficult and hard.
The aim of our project is to develop a system that is meant to partially computerize the work performed in the Water Board like generating monthly Water bill, record of consuming unit of water, store record of the customer and previous unpaid record.
We used HTML/PHP as front end and MYSQL as back end for developing our project. HTML is primarily a visual design environment. We can create a android application by designing the form and that make up the user interface. Adding android application code to the form and the objects such as buttons and text boxes on them and adding any required support code in additional modular.
MySQL is free open source database that facilitates the effective management of the databases by connecting them to the software. It is a stable ,reliable and the powerful solution with the advanced features and advantages which are as follows: Data Security.MySQL is free open source database that facilitates the effective management of the databases by connecting them to the software.
Sachpazis:Terzaghi Bearing Capacity Estimation in simple terms with Calculati...Dr.Costas Sachpazis
Terzaghi's soil bearing capacity theory, developed by Karl Terzaghi, is a fundamental principle in geotechnical engineering used to determine the bearing capacity of shallow foundations. This theory provides a method to calculate the ultimate bearing capacity of soil, which is the maximum load per unit area that the soil can support without undergoing shear failure. The Calculation HTML Code included.
2. In This Lecture You Will Learn:
The difference between analysis and
design
The difference between logical and
physical design
The difference between system and
detailed design
The characteristics of a good design
The need to make trade-offs in design
2
3. 3
How is Design Different
from Analysis?
Design states ‘how the system will be
constructed without actually building it’
(Rumbaugh, 1997)
Analysis identifies ‘what’ the system
must do
Design specifies ‘how’ it will do it
4. 4
How is Design Different
from Analysis?
The analyst seeks to understand the
organization, its requirements and its
objectives
The designer seeks to specify a system
that will fit the organization, provide its
requirements effectively and assist it to
meet its objectives
5. 5
How is Design Different
from Analysis?
As an example, in the Agate case study:
• analysis identifies the fact that the Campaign
class has a title attribute
• design determines how this will be entered
into the system, displayed on screen and
stored in a database, together with all the
other attributes of Campaign and other
classes
6. When Does Analysis Stop
and Design Start?
In a waterfall life cycle there is a clear
transition between the two activities
In an iterative life cycle the analysis of a
particular part of the system will precede its
design, but analysis and design may be
happening in parallel
It is important to distinguish the two activities
and the associated mindset
We need to know ‘what’ before we decide
‘how’
6
7. Traditional Design
Making a clear transition from analysis to
design has advantages
• project management—is there the right balance of
activities?
• staff skills—analysis and design may be carried out by
different staff
• client decisions—the client may want a specification of
the ‘what’ before approving spending on design
• choice of development environment—may be delayed
until the analysis is complete
7
8. 8
Design in the Iterative Life
Cycle
Advantages of the iterative life cycle include
• risk mitigation—making it possible to identify risks
earlier and to take action
• change management—changes to requirements are
expected and properly managed
• team learning—all the team can be involved from the
start of the project
• improved quality—testing begins early and is not done
as a ‘big bang’ with no time
9. 9
Seamlessness
The same model—the class model—is used
through the life of the project
During design, additional detail is added to the
analysis classes, and extra classes are added
to provide the supporting functionality for the
user interface and data management
Other diagrams are also elaborated in design
activities
10. Logical and Physical Design
In structured analysis and design a
distinction has been made between
logical and physical design
Logical design is independent of the
implementation language and platform
Physical design is based on the actual
implementation platform and the
language that will be used
10
11. 11
Logical and Physical
Design Example
Some design of the user interface classes can
be done without knowing whether it is to be
implemented in Java, C++ or some other
language—types of fields, position in windows
Some design can only be done when the
language has been decided upon—the actual
classes for the types of fields, the layout
managers available to handle window layout
12. Logical and Physical Design
It is not necessary to separate these into
two separate activities
It may be useful if the software is to be
implemented on different platforms
Then it will be an advantage to have a
platform-independent design that can be
tailored to each platform
12
13. 13
System Design
and Detailed Design
System design deals with the high level
architecture of the system
• structure of sub-systems
• distribution of sub-systems on processors
• communication between sub-systems
• standards for screens, reports, help etc.
• job design for the people who will use the
system
14. 14
System Design
and Detailed Design
Traditional detailed design consists of
four main activities
• designing inputs
• designing outputs
• designing processes
• designing files and database structures
15. System Design
and Detailed Design
Traditional detailed design tried to
maximise cohesion
• elements of module of code all contribute to
15
the achievement of a single function
Traditional detailed design tried to
minimise coupling
• unnecessary linkages between modules that
made them difficult to maintain or use in
isolation from other modules
16. 16
System Design
and Detailed Design
Object-oriented detailed design adds detail to
the analysis model
• types of attributes
• operation signatures
• assigning responsibilities as operations
• additional classes to handle user interface
• additional classes to handle data management
• design of reusable components
• assigning classes to packages
17. Elaborating Classes in Packages
17
Presentation Layer Package
Application Logic Layer Package
JDBC
Java SQL
Java AWT
Application
Windows
Storage Layer Package
Business
Objects
Control
Objects
Object to
Relational
18. TaxRate
18
Assigning Responsibilities
Invoice
1
1..*
* 1
InvoiceLine Product
appears on
1
*
applies to
19. Qualities of Analysis
Correct scope—everything in the system is
required
Completeness—everything required is in the
system and everything is documented in the
models
Correct content—accurate description of
requirements
Consistency—each element is consistently
referred to by the same name
19
20. Qualities of Design
Functional—system will perform the functions
that it is required to
Efficient—the system performs those functions
efficiently in terms of time and resources
Economical—running costs of system will not
be unnecessarily high
Reliable—not prone to hardware or software
failure, will deliver the functionality when the
users want it
20
21. Qualities of Design
Secure—protected against errors, attacks and
loss of valuable data
Flexible—capable of being adapted to new
uses, to run in different countries or to be
moved to a different platform
General—general-purpose and portable
(mainly applies to utility programs)
Buildable—Design is not too complex for the
developers to be able to implement it
21
22. Qualities of Design
Manageable—easy to estimate work involved
and to check of progress
Maintainable—design makes it possible for the
maintenance programmer to understand the
designer’s intention
Usable—provides users with a satisfying
experience (not a source of dissatisfaction)
Reusable—elements of the system can be
reused in other systems
22
23. 23
Trade-offs in Design
Design to meet all these qualities may produce
conflicts
Trade-offs have to be applied to resolve these
Functionality, reliability and security are likely
to conflict with economy
Level of reliability, for example, is constrained
by the budget available for the development of
the system
24. Trade-offs in Design
Design objectives may conflict with constraints
imposed by requirements
The requirement that the system can be used
in different countries by speakers of different
languages will mean that designers have to
agree a list of all prompts, labels and
messages and refer to these by some system
of naming or numbering
This increases flexibility and maintainability but
increases the cost of design
24
25. Measurable Objectives in Design
In Chapter 6, non-functional
requirements were described
How can we tell whether these have
been achieved?
Measurable objectives set clear targets
for designers
Objectives should be quantified so that
they can be tested
25
26. Measurable Objectives in Design
To reduce invoice errors by one-third
within a year
How would you design for this?
26
27. Measurable Objectives in Design
To reduce invoice errors by one-third
within a year
How would you design for this?
• sense checks on quantities
• comparing invoices with previous ones for the
same customer
• better feedback to the user about the items
ordered
27
28. Measurable Objectives in Design
To process 50% more orders at peak
periods
How would you design for this?
28
29. Measurable Objectives in Design
To process 50% more orders at peak
periods
How would you design for this?
• design for as many fields as possible to be
filled with defaults
• design for rapid response from database
• design system to handle larger number of
simultaneous users
29
30. Planning for Design
Planning for when platform is known
Setting standards
Allowing time for training
Agreeing objectives and planning tests
Agree procedures to decide on trade-offs
that significantly affect the system
Planning time for different aspects of
design
30
31. Summary
In this lecture you have learned about:
The difference between analysis and design
The difference between logical and physical
design
The difference between system and detailed
design
The characteristics of a good design
The need to make trade-offs in design
31
Editor's Notes
The assignment of responsibilities to classes is an issue that is related to reuse. Larman (1998) highlights this activity as the main task in design. In an object-oriented system, it is important to assign responsibility for operations to the right classes, and there is often a choice. In the FoodCo system, there will be a need to produce invoices for customers that include the calculation of Value Added Tax (VAT). (Value Added Tax is a tax used throughout Europe that is applied at each stage of the supply chain and not just as a purchase tax paid by the final end-user or consumer.) The calculation of VAT could be carried out by one of a number of classes in the model (Figure 12.2).
Invoice—which organizes the total information for the whole sale.
InvoiceLine—which contains the detail of each item sold and to which the tax applies.
Product—to which different VAT rates may apply.
TaxRate—which carries the details of the percentage that applies for each valid rate.
If the designer makes the wrong decision, the resulting class will be less reusable and may constrain the design of other classes. If the responsibility for tax calculation is allocated to Invoice or InvoiceLine, then this has implications for CreditNote and CreditNoteLine, which may also need to calculate tax. If it is assigned to Product, then it cannot be reused in the Agate project where VAT applies to services as well as products. Clearly it needs to be assigned to TaxRate in order to maximize the reuse that can be made of the classes in this design.