UML Diagrams For Online Course Portal
- 1. HarieHaren GV 16MIS0033 SCHOOL OF INFORMATION TECHNOLOGY AND ENGINEERING OBJECT ORIENTED ANALYSIS AND DESIGN DIGITAL ASSIGNMENT - 2 Project Title : Smart Online Course Portal Submitted By, HarieHaren GV 16MIS0033 Submitted To, Prof. Karthikeyan P Team Member : Celestine Raj P 16MIS0502
- 2. HarieHaren GV 16MIS0033 Abstract : As the technology developing the way of learning is also keep changing, earlier school, college, tuitions were the way to gather knowledge but in this modern world even with a mobile phone and internet we can learn subjects. Online courses have become a part and parcel of each and everyone's life. Person with a best degree also requires some additional knowledge apart from his normal studies to get well paid, this paved a way for many online sites to provide online courses. Online course is a system wherein subjects can be read, assignments can be done through online and earn a certificate through it. Smart Online Course Portal is an effective way to gather knowledge about courses from different sites. This system provides searching of a course, content of the course, duration, rating and reviews from different sites. This makes a person to have a idea of selecting a course from a variety of providers in the competitive sites. This system works similar to trivago which is similar for hotels. Lets discuss detail in the upcoming content. Modules Involved 1)Creating account 4)Request assistance 7)Make payments 2)Modify account 5)Register course 8)Obtain certificate 3)View payment 6)Teach course
- 3. HarieHaren GV 16MIS0033 Flow Of Smart Online Course Portal : Step 1 : Get Username and Password from the user (Student, Instructor, Admin, Banker) and Authenticate it across Database. Step 2 : If Authentication Success proceed further, else stop. Step 3 : Search and Select the list of Courses Offered By Admin on request to the Instructor. Step 4 : If all requirements are met, then register for that course and make Payment. Step 5 : If Payment is Success give access to the student material and finish them within the time given. Step 6 : If all the course material are completed, take a test provided by the instructor. Step 7 : The instructor will evaluate and provide marks, if pass the student will get an certificate, else he should take a re-test. Note :All the activities are stored in the database.
- 4. HarieHaren GV 16MIS0033 Sequence Diagram : UML Sequence diagrams are interaction diagrams that detail how operations are carried out. As sequence diagrams can be used to capture the interaction between objects in the context of a collaboration, one of the primary uses of sequence diagrams is in the transition from requirements expressed as use cases to the next and more formal level of refinement. Benefits of Sequence Diagram : Represent the details of a UML use case. Model the logic of a sophisticated procedure, function, or operation. See how objects and components interact with each other to complete a process. Plan and understand the detailed functionality of an existing or future scenario. Basic Components Of Sequence Diagram : Actor a type of role played by an entity that interacts with the subject (e.g., by exchanging signals and data) external to the subject (i.e., in the sense that an instance of an actor is not a part of the instance of its corresponding subject). represent roles played by human users, external hardware, or other subjects.
- 5. HarieHaren GV 16MIS0033 Lifeline A lifeline represents an individual participant in the Interaction. Activations A thin rectangle on a lifeline) represents the period during which an element is performing an operation. The top and the bottom of the of the rectangle are aligned with the initiation and the completion time respectively Call Message A message defines a particular communication between Lifelines of an Interaction. Call message is a kind of message that represents an invocation of operation of target lifeline. Return Message A message defines a particular communication between Lifelines of an Interaction. Return message is a kind of message that represents the pass of information back to the caller of a corresponded former message. Self Message A message defines a particular communication between Lifelines of an Interaction. Self message is a kind of message that represents the invocation of message of the same lifeline. Recursive Message A message defines a particular communication between Lifelines of an Interaction. Recursive message is a kind of message that represents the invocation of message of the same lifeline. It's target points to an activation on top of the activation where the message was invoked from.
- 6. HarieHaren GV 16MIS0033 Symbols Used In Sequence Diagram : Name Symbol Actor Life Line
- 7. HarieHaren GV 16MIS0033 Activation Call Message (Synchronous) Call Message (Asynchronous) Return Message Self Message
- 9. HarieHaren GV 16MIS0033 SEQUENCE DIAGRAM FOR ACCUNT CREATION MODULE
- 10. HarieHaren GV 16MIS0033 SEQUENCE DIAGRAM FOR LOGIN MODULE
- 12. HarieHaren GV 16MIS0033 Activity Diagram : Activity diagram is basically a flowchart to represent the flow from one activity to another activity. The activity can be described as an operation of the system. Activity diagram is another important diagram in UML to describe the dynamic aspects of the system. Purpose Of Activity Diagram : Demonstrate the logic of an algorithm. Describe the steps performed in a UML use case. Illustrate a business process or workflow between users and the system. Simplify and improve any process by clarifying complicated use cases. Model software architecture elements, such as method, function, and operation. Basic Components of Activity Diagram : Action: A step in the activity wherein the users or software perform a given task. In actions are symbolized with round-edged rectangles. Decision node: A conditional branch in the flow that is represented by a diamond. It includes a single input and two or more outputs.
- 13. HarieHaren GV 16MIS0033 Control flows: Another name for the connectors that show the flow between steps in the diagram. Start node: Symbolizes the beginning of the activity. The start node is represented by a black circle. End node: Represents the final step in the activity. The end node is represented by an outlined black circle.
- 14. HarieHaren GV 16MIS0033 Symbols Used In Activity Diagram : Name Symbol Start Action Final Connector Decision Join
- 16. HarieHaren GV 16MIS0033 Activity Diagram For Account Creation Module
- 18. HarieHaren GV 16MIS0033 State Chart Diagram : A state diagram, also called a state machine diagram or state chart diagram, is an illustration of the states an object can attain as well as the transitions between those states in the Unified Modelling Language (UML). State defines a stage in the evolution or behaviour of an object. Purpose of State Machine Diagram : Depicting event-driven objects in a reactive system. Illustrating use case scenarios in a business context. Describing how an object moves through various states within its lifetime. Showing the overall behaviour of a state machine or the behaviour of a related set of state machines. Basic Components In State Chart Diagram : States States represent situations during the life of an object. You can easily illustrate a state by using a rectangle with rounded corners.
- 19. HarieHaren GV 16MIS0033 Transition A solid arrow represents the path between different states of an object. Label the transition with the event that triggered it and the action that results from it. A state can have a transition that points back to itself. Initial State A filled circle followed by an arrow represents the object's initial state. Final State An arrow pointing to a filled circle nested inside another circle represents the object's final state. Fork A short heavy bar with two transitions entering it represents a synchronization of control. The first bar is often called a fork where a single transition splits into concurrent multiple transitions. Join The second bar is called a join, where the concurrent transitions reduce back to one.
- 20. HarieHaren GV 16MIS0033 Symbols Used In State Chart Diagram : Name Symbol Simple State Composite State Transition Initial (Start) Final (Stop) Fork
- 22. HarieHaren GV 16MIS0033 STATE CHART DIAGRAM FOR ACCOUNT CREATION MODULE