Master sequence diagrams with this sequence diagram guide. It describes everything you need to know on sequence diagram notations, best practices as well as common mistakes. It also explains how to draw a sequence diagram step by step. Plus it offers Creately sequence diagram templates you can click and edit right away.
Welcome to my series of articles on Unified Modeling Language. This is "Session 10 – Sequence Diagram" of the series. Please view my other documents where I have covered each UML diagram with examples
Welcome to my series of articles on Unified Modeling Language. This is "Session 10 – Sequence Diagram" of the series. Please view my other documents where I have covered each UML diagram with examples
This slide give the basic introduction about UML diagram and it's types, and brief intro about Activity Diagram, use of activity diagram in object oriented programming language..
This lecture provide a review of requirement engineering process. The slides have been prepared after reading Ian Summerville and Roger Pressman work. This lecture is helpful to understand user, and user requirements.
PABRE System - Software Requirement PatternsGESSI UPC
This presentation describes the PABRE tools for the USE, MANAGEMENT AND EVOLUTION OF SOFTWARE REQUIREMENT PATTERNS FOR REQUIREMENTS ENGINEERING ELICITATION.
PABRE framework: http://www.upc.edu/gessi/PABRE/
PABRE system: http://www.upc.edu/gessi/PABRE/Tools.html
This slide give the basic introduction about UML diagram and it's types, and brief intro about Activity Diagram, use of activity diagram in object oriented programming language..
This lecture provide a review of requirement engineering process. The slides have been prepared after reading Ian Summerville and Roger Pressman work. This lecture is helpful to understand user, and user requirements.
PABRE System - Software Requirement PatternsGESSI UPC
This presentation describes the PABRE tools for the USE, MANAGEMENT AND EVOLUTION OF SOFTWARE REQUIREMENT PATTERNS FOR REQUIREMENTS ENGINEERING ELICITATION.
PABRE framework: http://www.upc.edu/gessi/PABRE/
PABRE system: http://www.upc.edu/gessi/PABRE/Tools.html
Welcome to my series of articles on Unified Modeling Language. This is "Session 9 – State Diagram" of the series.
Please view my other documents where I have covered each UML diagram with examples
In this slide contain details of CRC Card (class responsibility collaboration) , and 6 examples of CRC card ,advantages and disadvantages, and how to make CRC card.
If you're new to UML, our UML tutorial can get you on the right path. Learn more about what The Unified Modeling Language is, what it does, and why it's important.
UML is not dead. Even if you feed your team with agile fuel, UML can save you some time and extra discussions. In this super short presentation we show you how we apply UML to speed up software requirement extractions.
Stop writing docs that nobody reads and go directly to the point!
Most governments around the world have closed educational institutes to help contain the spread of COVID-19 which has affected people regardless of their income, gender, level of education, or nationality.
The lockdown has inevitably interrupted conventional schooling, exposing the many inadequacies and inequities (i.e. lack of access to broadband and computers required for online education) in the education systems around the world.
While the governments and the educational communities have made a significant effort to ensure that children continue to receive their education despite the difficult circumstances, a large part of the world’s student population still remains unreachable by the remote learning programs run by their institutes.
Here’s a look at the impact of COVID-19 on education, highlighting the different delivery channels for remote learning and the steps governments and education institutions can take to overcome the challenges of carrying out learning programs remotely.
The Easy Guide for Deployment Diagrams by Creately.
Risk management is a process in which risks are identified and controlled proactively. It allows businesses to improve their chances of success by minimizing threats and maximizing opportunities. Creately offers editable templates which you can use for your risk management process. A variety of different templates on Risk Management are included which you can use for each step throughout your Risk Management Process.
Also, you can find many more useful diagram templates in our diagram community and all our popular diagram templates are available for free. Just click on the "Use as Template" button to immediately start modifying it using our online diagramming tools.
The Easy Guide for Deployment Diagrams by Creately.
Creately offers a wide range of Deployment Diagrams which can be edited instantly using our component diagram online Editor. We have listed 10 Deployment Diagrams here, and you can find a variety of different templates on our diagram community as well. All our popular diagram templates are available for free. Just click on the "Use as Template" button to immediately start modifying it using our online diagramming tools.
Workflow Diagram Examples by Creately.
Creately offers wide range of Workflow Diagrams which can be edited instantly using our Workflow Diagram online Editor. We have listed 10 Workflow Diagrams here, and you can find variety of different templates on our diagram community as well. All our popular diagram templates are available for free. Just click on the "Use as Template" button to immediately start modifying it using our online diagramming tools.
The Easy Guide for Component Diagrams by Creately.
Creately offers wide range of Component Diagrams which can be edited instantly using our component diagram online Editor. We have listed 10 Component Diagrams here, and you can find variety of different templates on our diagram community as well. All our popular diagram templates are available for free. Just click on the "Use as Template" button to immediately start modifying it using our online diagramming tools.
SWOT Analysis Example Diagrams with Editable TemplatesCreately
SWOT Analysis examples with Editable Templates
Creately offers wide range of SWOT Analysis Diagrams which can be edited instantly using our online Editor. We have listed 20 SWOT Analysis Diagrams here, and you can find variety of different templates on our diagram community as well. All our popular diagram templates are available for free. Just click on the "Use as Template" button to immediately start modifying it using our online diagramming tools.
Gantt Chart Examples with Editable TemplatesCreately
Gantt Chart Examples with Editable Templates by Creately.
Creately offers wide range of Gantt Chart Diagram Templates which can be edited instantly using our online Editor. We have listed 20 Flowchart Templates here, and you can find variety of different templates on our diagram community as well. All our popular diagram templates are available for free. Just click on the "Use as Template" button to immediately start modifying it using our online diagramming tools.
Block Diagram Examples with Editable TemplatesCreately
Block Diagram Examples with Editable Templates by Creately.
Creately offers wide range of Block Diagram Templates which can be edited instantly using our online Editor. We have listed 20 Block Diagram Templates here, and you can find variety of different templates on our diagram community as well. All our popular diagram templates are available for free. Just click on the "Use as Template" button to immediately start modifying it using our online diagramming tools.
Flowchart Examples with Editable TemplatesCreately
Flowchart Examples with Editable Templates by Creately.
Creately offers wide range of Flowchart Diagram Templates which can be edited instantly using our online Editor. We have listed 20 Flowchart Templates here, and you can find variety of different templates on our diagram community as well. All our popular diagram templates are available for free. Just click on the "Use as Template" button to immediately start modifying it using our online diagramming tools.
Improve Organizational Performance Using Diagrams by CreatelyCreately
Visual Guide to Improving Organizational Performance by Creately.
Creately offers wide range of Diagram Templates which can be edited instantly using our online Editor. We have listed several Templates here, and you can find many more relevant templates on our diagram community as well. All our popular diagram templates are available for free. Just click on the "Use as Template" button to immediately start modifying it using our online diagramming tools.
Creately offers wide range of Activity Diagram Templates which can be edited instantly using our online Editor. We have listed several Activity Diagram Templates here, and you can find many more Activity Diagram templates on our diagram community as well. All our popular activity diagram templates are available for free. Just click on the "Use as Template" button to immediately start modifying it using our online diagramming tools.
The Ultimate Guide for UML Class Diagrams by CreatelyCreately
The Easy Guide to UML Class Diagrams | Class Diagram Tutorial
by Creately.
Creately offers wide range of UML Class Diagram Templates which can be edited instantly using our online Editor. We have listed several Class Diagram Templates in this tutorial covering some of the most popular areas in the industry along with comprehensive guide for UML Class diagram templates. You can find many more Class Diagram templates on our diagram community as well. All our popular UML Class diagram templates are available for free. Just click on the "Use as Template" button to immediately start modifying it using our online diagramming tools.
Creately offers wide range of iOS Mockup Diagram Templates which can be edited instantly using our online Editor. We have listed 20 iOS Mockup Templates here, but Many more templates can be found on our diagram community. All our popular iOS Mockup templates are available for free. Just click on the "Use as Template" button to immediately start modifying it using our online diagramming tools.
Optimize Sales Processes Using Diagrams by CreatelyCreately
7 ways to to Optimize the Sales Processes whilst closing more sales deals using Diagrams by Creately. We’ve listed highly Effective editable Diagram-Templates to help you to optimize your sales process whilst closing more deals. You can edit/draw your diagrams by using our online Editor, Creately. Many more templates can be found on our diagram community. Popular sales optimizing templates are available for free. Just click on the "Use as Template" button to immediately start modifying it using our online diagramming tools.
Creately offers series of professional infographic templates which can be used instantly to create your own infographic diagrams. Many types of infographic templates can be found on our diagram community. Just click on the "Use as Template" button to immediately start modifying templates using our online diagramming tools.
The essential visual tools you need to build a foolproof Conversion Rate Optimization Plan by Creately with Editable Templates. Creately offers several diagram templates which can be used instantly to illustrate how to optimize your website to convert more site visitors into customers in a more visual-friendly way. Many more Conversion Rate Optimization planning templates can be found on our diagram community. Popular Conversion Rate Optimization planning diagrams are available for free. Just click on the "Use as Template" button to immediately start modifying it using our online diagramming tools.
Essential HR Diagram Templates by CreatelyCreately
Common HR Challenges and How to Solve Them Visually by Creately with 6 Editable Templates. Creately offers several diagram templates which can be used instantly to draw diagrams for your company's HR Process. Many types of HR Diagram templates can be found on our diagram community. Popular HR diagrams are available for free. Just click on the "Use as Template" button to immediately start modifying it using our online diagramming tools.
Creately offers many Concept Map diagram templates which can be used instantly to create your own Concept Map with Creately. Many types of Concept Map diagram templates can be found on our diagram community. Popular Concept Map templates are available for free. Just click on "Use as Template" button to immediately start modifying it using our online diagramming tool.
The Ultimate List of Change Management Tools to Drive Change Like a Pro by Creately with 11 Editable Templates. Creately offers several diagram templates which can be used instantly to draw diagrams for your company's Change Management Process. Many types of Change Management Diagram templates can be found on our diagram community. Popular Change Management diagrams are available for free. Just click on the "Use as Template" button to immediately start modifying it using our online diagramming tools.
The Ultimate List of Marketing Strategy Planning Tools by Creately with 14 Editable Templates. Creately offers several diagram templates which can be used instantly to create your own Marketing Strategy Planning. Draw your Marketing Strategy Planning tools with Creately templates. Many types of Marketing Strategy Diagram templates can be found on our diagram community. Popular Marketing Strategy diagrams are available for free. Just click on the "Use as Template" button to immediately start modifying it using our online diagramming tools.
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
Safalta Digital marketing institute in Noida, provide complete applications that encompass a huge range of virtual advertising and marketing additives, which includes search engine optimization, virtual communication advertising, pay-per-click on marketing, content material advertising, internet analytics, and greater. These university courses are designed for students who possess a comprehensive understanding of virtual marketing strategies and attributes.Safalta Digital Marketing Institute in Noida is a first choice for young individuals or students who are looking to start their careers in the field of digital advertising. The institute gives specialized courses designed and certification.
for beginners, providing thorough training in areas such as SEO, digital communication marketing, and PPC training in Noida. After finishing the program, students receive the certifications recognised by top different universitie, setting a strong foundation for a successful career in digital marketing.
Introduction to AI for Nonprofits with Tapp NetworkTechSoup
Dive into the world of AI! Experts Jon Hill and Tareq Monaur will guide you through AI's role in enhancing nonprofit websites and basic marketing strategies, making it easy to understand and apply.
Unit 8 - Information and Communication Technology (Paper I).pdfThiyagu K
This slides describes the basic concepts of ICT, basics of Email, Emerging Technology and Digital Initiatives in Education. This presentations aligns with the UGC Paper I syllabus.
Biological screening of herbal drugs: Introduction and Need for
Phyto-Pharmacological Screening, New Strategies for evaluating
Natural Products, In vitro evaluation techniques for Antioxidants, Antimicrobial and Anticancer drugs. In vivo evaluation techniques
for Anti-inflammatory, Antiulcer, Anticancer, Wound healing, Antidiabetic, Hepatoprotective, Cardio protective, Diuretics and
Antifertility, Toxicity studies as per OECD guidelines
2. There are 3 types of Interaction diagrams in UML
• Sequence diagrams
• Communication diagrams
• Timing diagrams
Interaction diagrams are used to illustrate interactions of
parts within a system.
Out of these 3 types, sequence diagrams are preferred by
both developers and readers alike for their simplicity.
3. What is a Sequence Diagram?
Sequence diagrams, commonly used by developers, model
the interactions between objects in a single use case.
They illustrate how the different parts of a system interact
with each other to carry out a function, and the order in
which the interactions occur when a particular use case is
executed.
4. Drawing Sequence Diagrams with Creately
Creately is a web based diagramming tool that can be used to draw sequence
diagrams including all other UML diagram types as well as flowcharts, Gantt charts
and many other diagram types
It offers tools, professionally designed sequence diagram templates and resources
to help draw sequence diagrams
It comes with real-time collaboration features that allow users to work together
and share diagrams with a team
It has a desktop version for offline diagramming and a mobile app to manage and
browse diagrams on the go
6. A sequence diagram is structured in such a way that it
represents a timeline which begins at the top and descends
gradually to mark the sequence of interactions.
Each object has a column and the messages exchanged
between them are represented with arrows.
• Lifeline Notation
• Activation Bars
• Message Arrows
• Comment
7. Lifeline Notation
A sequence diagram is made up of several of these
lifeline notations
They should be arranged horizontally across the top of
the diagram
No two lifeline notations should overlap each other
They represent the different objects that interact with
each other in the system
A lifeline notation with an actor element symbol is used
when the sequence diagram is owned by a use case
8. Activation Bars
Activation bar is the box placed on the
lifeline
It indicates that an object is active ((or
instantiated) during an interaction
between two objects
The length of the rectangle indicates the
duration of the interaction
9. Message Arrows
An arrow from the Message Caller to the Message Receiver
specifies a message
The message can flow in any direction; from left to right, right to
left and back to the caller itself
The description of the message should go on the arrow
Arrow heads may change according to different message types
10. Different message types;
• Synchronous message
• Asynchronous message
• Return message
• Participant creation message
• Participant destruction message
• Reflexive message
• The message signature is (all parts except the message_name is optional);
attribute = message_name (arguments): return_type
11. A synchronous message is used when the sender waits for the receiver to
process the message and return before carrying on with another message
An asynchronous message is used when the message caller does not wait
for the receiver to process the message and return before sending other
messages to other objects within the system
12.
13. A return message is used to indicate that the message receiver is
done processing the message and is returning control over to the
message caller.
Tip: You can avoid cluttering up your diagrams by minimizing the use of return
messages since the return value can be specified in the initial message arrow
itself.
When an object sends a message to itself, it is called a reflexive
message. It is indicated with a message arrow that starts and ends
at the same lifeline
14.
15. • Participant creation message; objects can be created in the middle
of a sequence. The dropped participant box notation is used when
you need to show that the particular participant did not exist until
the create call was sent.
• Participant destruction message; participants, when no longer
needed, can also be deleted from a sequence diagram. This is done
by adding an ‘X’ at the end of the lifeline of the said participant.
16.
17. Comments
UML generally permits the annotation of comments in all UML diagram
types.
The comment object is a rectangle with a folded-over corner as shown
below. The comment can be linked to the related object with a dashed
line.
18. How to Draw a Sequence Diagram
A sequence diagram represents the scenario or flow of events in
one single use case. The message flow of the sequence diagram is
based on the narrative of the particular use case.
Before you start drawing the sequence diagram or decide what
interactions should be included in it, you need to ready a
comprehensive description of the particular use case.
20. From the use case diagram example of ‘Create New Online Library
Account’, we will focus on the use case named ‘Create New User
Account’ to draw our sequence diagram.
Step 1
Identify the objects or participants in the use case ‘Create New User
Account’
• Librarian
• Online Library Management system
• User credentials data base
• Email system
21. Step 2
List down the steps involved in the execution of the use case
• The librarian requires the system to create a new online library account
• The librarian selects the library user account type
• The librarian enters the user’s details
• The user’s details are checked using the user Credentials Database
• The new library user account is created
• A summary of the new account’s details is emailed to the user
22. Step 3
Identify which messages should be passed between the objects we identified
earlier as the system executes these steps. Then draw the sequence diagram.
23. Sequence Diagram Best Practices
Manage complex interactions with sequence fragments
• Sequence fragments are used to show complex interactions such as
alternative flows and loops in a more structured way.
• A sequence diagram is drawn as a box that frames a section of
interactions between objects in a sequence diagrams.
• On the top left corner of the fragment sits an operator. This – the
fragment operator - specifies what sort of a fragment it is.
24. Alternative Combination Fragment
• It is used when a choice needs to be made between two or more
message sequences. It models the “if then else” logic
• It is specified by mentioning ‘alt’ inside the frame’s name box
• To show 2 or more alternatives, the frame is divided into what is
called interaction operands using a dashed line
• Each operand has a guard to test against and it is placed at the top
left corner of the operand
26. Option Combination Fragment
• The option fragment is used to indicate a sequence that will only occur
under a certain condition, otherwise the sequence won’t occur
• It models the “if then” statement
• It is represented with a rectangular frame where ‘opt’ is placed inside the
name box
• Unlike the alternative fragment, the option fragment is not divided to
operands
28. Loop Fragment
• It is used to show a repetitive sequence
• It is drawn as a frame and specified by placing ‘loop’ in the name
box
• It can be used
– for the Boolean test
– to test minimum iterations (the loop must execute not less than the
number mentioned)
– to test maximum iterations (the loop mustn’t execute more than the
number mentioned)
30. Reference Fragment
• It allows you to reuse or refer to a part of one sequence diagram in
another
• It helps manage the size of large sequence diagrams
• Include ‘ref’ in the name box of the frame to specify the reference
fragment
• Mention the name of the sequence diagram being referred to
inside the frame
32. Draw smaller sequence diagrams that capture the
essence of the use case
• Several objects and messages across a sequence diagram clutters it
up
• Convey how your system functions with a few smaller sequence
diagrams
• Make sure the diagram fits on a single page and leaves room for
additional comments
• Find out what is common about the diagrams and focus on the
commonality when drawing
33. Sequence Diagram Common Mistakes
• Adding too much detail that makes it difficult to read the diagram
• Obsolete sequence diagrams that are irrelevant when compared to the
interfaces, actual architectures of the system
• Leaving no blank space between the use case text and the message arrow
• Not considering the origins of message arrows carefully
See these common mistakes explained in detail here.