How is component and connector architecture view abbreviated. Componentandconnector structures how is the system to be structured as a set of elements that have runtime behavior components and interactions. Views used in software architecture software architecture is organised in views which are analogous different types of blueprints made in building architecture. Connectors facilitate interactions between units of computation in the software system also referred to as components. Overview the componentandconnector viewtype from documenting software architecturesc views and beyond. Often, these interactions are carried out using complex infrastructure, such as middleware frameworks, distributed communication channels, and process schedulers. This article is inspired by the book software architecture in practice by len bass, paul clements and rick kazman.
Citeseerx document details isaac councill, lee giles, pradeep teregowda. I typically use uml 2 component diagrams as an architecturelevel artifact, either to model the business software architecture, the technical software architecture, or more often than not both of these architectural aspects. Such a view may contain many instances of the same component type. This view addresses concurrency and distribution of functionality. Additionally, component and connector models include as elements the pathways of interaction, such as communication links and protocols, information flows, and access to shared storage. Component diagrams illustrate the pieces of software, embedded controllers, etc. They focus on how the system is implemented from the perspective of different types of engineers security, software, data, computing components, communications, and. An allocation view type relates a software unit to a nonsoftware unit. Documenting component and connector views with uml 2. A structure is the set of elements itself, as they exist in software or hardware.
The logical view describes the designs object model, the. Whereas a reference model divides the functionality, a reference architecture is the mapping of that functionality onto a system decomposition. Common software architectural patterns you need to know. Component diagrams are a static view of the software system and depict the systems design at a specific point in its development and evolution. Software architectures documenting the architecture. Ports are denoted by small squares on the border of the component. Uml component diagram shows components, provided and. Software architecture provides a conceptual framework for gaining control over the complexity of ever increasing size of a software system. A componentandconnector view of mapreduce showing how the data. This view shows the organization of software modules, libraries, subsystems, and units of development. A uml profile for documenting the component and connector views of software architectures 3. Every system has a unique set of goals that it is trying to accomplish.
Componentandconnector structures help answer questions such as what are the major. The main objective of this report is to understand various abstractions provided by the software architecture and to create a basis for understanding semantics of architectural connectors. The components are the clients and servers, and the connectors are protocols and messages they share to carry out the systems work. The set of elements itself, as they exist in software or hardware view. Component diagram shows components, provided and required interfaces, ports, and relationships between them. It also explains very highlevel when a component and connector model satisfies a component and connector view, and. Elements, relations, and properties purpose notation relation to other views 3. A highlevel architectural view of a system is useful for communication with system stakeholders and project planning because it is not cluttered with detail. In previous chapters, we explained how to represent all the various aspects of a software architecture. A component diagram has a higher level of abstraction than a class diagram usually a component is implemented by one or more classes or objects at runtime.
Component and connector view in software architecture. It is also known the deployment view of the system. List five possible sources of software architecture. A uml profile for documenting the componentandconnector views of software architectures 3.
Swe 443 software architecture views and styles 30 three major styles. System administrators can use component diagrams to plan ahead, using the view of the logical software components and their relationships on the system. Components are a means of breaking the complexity of software into manageable parts. The multiple architectural views that can be used to specify different struc tural aspects of the system being built.
It is concerned with the topology of the software components on the physical and the physical connections between the components of the software. Its description defines what the component can do and what it requires to do that job. It is the same for our component diagram, which focuses on the component in a system, not their methods and specific implementations. What are componentandconnector views and allocation. Components can be swapped in and out like the interchangeable parts of a machine. Twitter system design twitter software architecture twitter interview questions duration. Clements, david garlan, robert nord, bradley schmerl, oviedo silva carnegie mellon school of computer science. A uml profile for documenting the componentandconnector. Software components are parts of a system or application. While each set is different, basically, the groupings can b. What distinguishes an architecture for a software product line from an architecture for a simple product.
The component diagram extends the information given in a component notation element. The views are used to describe the system from the viewpoint of different stakeholders, such as endusers, developers, system engineer, and project managers. Components are principal units of runtime interaction and data stores. Data architecture views and applications architecture views address the concerns of the database designers and administrators, and the system and software engineers of the system. In this paper, we present a uml profile and a group of uml patterns for documenting the componentandconnector views of software architectures 8. Therefore, architectural design and source code structural design, though. Component diagram georgia tech software development process udacity.
Modern software architecture practice embraces the concept of architectural views kruchten. There are many standard component frameworks such as comdcom, javabean, ejb, corba. For example, you might have a web client component type that is instantiated many times within the same view. Software architecture is the means to cope with the complexity of large software systems. The other two are the module decomposition view and the allocation view a. Uml 2 tutorial component diagram component diagrams. What is the major difference between architectural. They facilitate the creation of the component and connector viewtype in any uml 2. Software architecture daily gathering of information bits. Connectors play an important role in the context of software architecture, as they determine several important attributes including performance, resource utilization, reliability and security of distributed and mobile systems. Serviceoriented architecture soa view c pipeandfilter view. Swe 443 software architecture views and styles 3 one system, many views.
The three main advantages of explicitly designing and documenting a software architecture are. This type of diagrams is used in componentbased development cbd to describe systems with serviceoriented architecture soa componentbased development is based on assumptions that previously constructed components could be reused and that components. This reduces the complexity of software development, maintenance, operations. The primary objective of component based architecture is to ensure component reusability.
Recently i started learning software architecture and it talks about architecture components and connectors and an uml2 diagram type is also called component diagrams could anyone tell the difference between those two or provide a link that does explain it. These components tie the complete software architecture to a specific platform and thus hamper reuse. For example a deployment view will relate a module to some hardware component on which it will run, such as a hardware processor or a communications device. Componentandconnector views of software architectures. Each component hides the complexity of its implementation behind an interface. Before a view can be documented, it must be chosen by the architect. Previous work on software architecture reuse with multiple platforms either requires platformspecific handcrafting or the effort of explicit platform models. A component encapsulates functionality and behaviors of a software element into a reusable and selfdeployable binary unit. A view is a representation of a coherent set of architectural elements. Each component is isolated from performance of upstream component. Notessoftwarearchitecture at master exlawnotes github. An allocation view type relates a software unit to a non software unit.
Graphically model two quality attributes in stimulusresponse format. Transforming platformindependent to platformspecific. Is a reference model mapped onto software elements and the data flows between them. It is an allocation view, mapping software to the development environment. Software architecture components and connectors and uml 2. We separate the view of software architecture from that of the source code in order to focus on the softwares runtime characteristics independent of a given components implementation. Typically architecture separates different concerns.
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