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SOURCE CODE MANAGEMENT SYSTEM (GITHUB)
GitHub is a web-based hosting service for Git repositories that offers both source code management features and additional collaboration tools. Unlike Git, which is command-line based, GitHub provides a graphical web and desktop interface. It allows for access control and features like wikis, task tracking, and bug reporting for each project. Both free and paid plans are offered, with free accounts commonly used for open source projects. As the largest code host, GitHub has over 3.4 million users and has become a staple for open source developers and a replacement for resumes sought by some employers.
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SOURCE CODE MANAGEMENT SYSTEM (GITHUB)
- 2. ABOUT GITHUB GITHUBis a GIT repository web-based hosting service which offers all of the distributed revision control and source code management (SCM) functionality of Git as well as adding its own features. Unlike Git, which is strictly a command-line tool, GitHub provides a web-based graphical interface and desktop as well as mobile integration. It also provides access control and several collaboration features such as wikis, task management and bug tracking and feature requests for every project. GitHub offers both paid plans for private repositories, and free accounts, which are usually used to host open source software projects. As of 2014, GitHub reports having over 3.4 million users, making it the largest code host in the world. GitHub has become such a staple among the open-source development community that many developers have begun considering it a replacement for a conventional resume and some employers require applicants to provide a link to and have an active contributing GitHub account in order to qualify for a job.
- 4. DATA FLOWDIAGRAM GITHUB explained in DFD (Data Flow Diagram). DFD is a graphical representation of the “flow” of data through an information system, modeling its process aspects. A DFD is often used as a preliminary step to create an overview of the system, which can later be elaborated. DFDs can also be used for the visualization of data processing.
- 5. GITHUB explained inUse Case Diagram. In software & systems engineering, a use case is a list of steps, typically defining interactions between a role (known in Unified Modelling Language (UML) as an “actor”) & a system, to achieve a goal. In systems engineering, use cases are used at a higher level than within software engineering, often representing missions.
- 7. GITHUB explained ina Class Diagram. In software engineering, a class diagram in the Unified Modelling language is a type of static structure diagram that describes the structure of a system by showing the system’s classes, their attributes, operations & the relationships among objects. The class diagram is the main building block of object oriented modeling. It is used both for general conceptual modeling of the systematics of the application, & for detailed modeling translating the models into programming code. The classes in the diagram represent both the main objects, interactions in the application & the classes to be performed.
- 9. SEQUENCE DIAGRAM GITHUB explained in a sequence diagram. A sequence diagram is an interaction diagram that shows how processes operate with 1 another & in what order. It is a construct of a message sequence chart. A sequence diagram shows object interactions arranged in time sequence. It depicts the objects & classes involved in the scenario & the sequence of messages exchanged between the objects needed to carry out the functionality of the scenario. A sequence diagram shows, as parallel vertical lines, different processes or objects that live simultaneously, &, as horizontal arrows, the messages exchanged between them, in the order in which they occur. This allows the specification of simple runtime scenarios.
- 11. ACTIVITY DIAGRAM GITHUBexplained in an activity diagram. Activity diagrams are a graphical representations of workflows of stepwise activities and actions with support for choice, iteration & concurrency. Activity diagrams are constructed from a limited number of shapes, connected with arrows. The most important shape types: • rounded rectangles represent actions • diamonds represent decisions •Bars represent the start or end of concurrent activities; •A black circle represents the start of the workflow; •An encircled black circle represents the end Arrows run from the start toward the end and represent the order in which activities happen. Hence they can be regarded as a form of flowchart.
- 13. STATE CHART DIAGRAM GITHUB explained in a state chart diagram. State chart diagram is a type of diagram used in computer science & related fields to describe the behavior of systems. State diagrams require that the system described is composed of a finite number of states; sometimes, this is indeed the case, while at other times this is a reasonable abstraction. Many forms of state diagrams exist; which differ slightly & have different semantics. State diagrams are used to give an abstract description of the behavior of a system. Hereby “each diagram usually represents objects of a single class & track the different states of its objects through the system”.
- 15. COLLABORATION DIAGRAM GITHUBexplained in a collaboration diagram. A collaboration diagram also called a communication diagram or interaction diagram, is an illustration of the relationships & interactions among software objects in the UML. A collaboration diagram resembles a flowchart that portrays the roles, functionality & behavior of individual objects as well as the overall operation of the system in real time. Collaboration diagrams are best suited to the portrayal of simple interactions among relatively small numbers of objects. The relationships between the objects are shown in rectangles. As the number of objects and messages grows, a collaboration diagram can become difficult to read. Several vendors offer software for creating & editing collaboration diagrams.
- 17. COMPONENT DIAGRAM GITHUBexplained in a component diagram. Component diagrams are different in terms of nature and behavior. Component diagrams are used to model physical aspects of a system. Component diagrams can also be described as a static implementation view of a system. Static implementation represents the organization of the components at a particular moment. A single component diagram cannot represent the entire system but a collection of diagrams are used to represent the whole. So the purpose of the component diagram can be summarized as: •Visualize the components of a system. •Construct executables by using forward and reverse engineering. •Describe the organization and relationships of the components. This diagram is very important because without it the application cannot be implemented efficiently. A well prepared component diagram is also important for other aspects like application performance, maintenance etc.
- 19. GITHUB explained ina deployment diagram. A deployment diagram in the UML models is the physical deployment of artifacts on nodes. To describe a website, for e.g., a deployment diagram would show what hardware components (“nodes”) exist (e.g., a web server, an application server, and a database server), what software components (“artifacts”) run on each node. A single node in a deployment diagram may conceptually represent multiple physical nodes, such as a cluster of database servers. There are 2 types of database servers: 1. Device node 2. Execution environment node Device nodes are physical computing resources with processing memory services to execute software, such as typical computers or mobile phones.
- 21. GITHUB explained insystem architecture diagram. Any real world system is used by different users. The users can be developers, testers, business people, analysts and many more. So before designing a system the architecture is made with different perspectives in mind. The most important part is to visualize the system from different viewer's perspective. The better we understand the better we make the system. These perspectives are: •Design •Implementation •Process •Deployment UML plays an important role in defining different perspectives of a system. Architectural model represents the overall framework of the system. It contains both structural and behavioral elements of the system. Architectural model can be defined as the blue print of the entire system. Package diagram comes under architectural modeling. There have been efforts to formalize languages to describe system architecture, collectively these are called architecture description languages (ADLs).
- 24. PRESENTED BY:- GRACYJ. JOSEPH (15) COLLEGE= ATHARVA COLLEGE OF ENGINEERING TE CMPN CLASS-2