This class acts as an adapter see the Gamma pattern. There is one instance of this process for each student that is currently registering for courses. This supports the use case allowing a student to register for courses in the current semester. Manages the student functionality, including user interface processing and coordination with the business processes.
Controls the interface of the Student application. Controls the family of forms that the Student uses. This process communicates with the external Billing System to initiate student billing. The Close Registration process is initiated at the end of the registration time period. This process communicates with the process controlling access to the Billing System. The Billing System supports the submitting of student bills for the courses registered for by the student for the current semester.
The Course Cache thread is used to asynchronously retrieve items from the legacy Course Catalog System. The OfferingCashe thread is used to asynchronously retrieve items from the legacy Course Catalog System. Any object that is a remote object must directly or indirectly implement this interface.
Only those methods specified in a remote interface are available remotely. The class must define a method of no arguments called run. For example, Runnable is implemented by class Thread. The Java Virtual Machine allows an application to have multiple threads of execution running concurrently. Threads with higher priority are executed in preference to threads with lower priority.
Each thread may or may not also be marked as a daemon. When code running in some thread creates a new Thread object, the new thread has its priority initially set equal to the priority of the creating thread, and is a daemon thread if and only if the creating thread is a daemon. Deployment View. A description of the deployment view of the architecture Describes the various physical nodes for the most typical platform configurations.
Also describes the allocation of tasks from the Process View to the physical nodes. This section is organized by physical network configuration; each such configuration is illustrated by a deployment diagram, followed by a mapping of processes to each processor. Students register for courses using external desktop PCs which are connected to the College Server via internet dial up. These local PCs are also used by professors to select course and submit student grades.
The Registrar uses these local PCs to maintain student and professor information. All faculty and students have access to the Server through the campus LAN. The Course Catalog System is a legacy system that contains the complete course catalog.
The Billing System also called the Finance System is a legacy system that generates the student bills each semester. The chosen software architecture supports the key sizing and timing requirements, as stipulated in the Supplementary Specification [15]:. The selected architecture supports the sizing and timing requirements through the implementation of a client-server architecture. The client portion is implemented on local campus PCs or remote dial up PCs.
Much like there is not one definition around what an architect does, there is not one standard precise way of documenting architecture. The goal of this post is to share some of the techniques that I have successfully used as easy-to-read material, as well as to solicit feedback.
There are many more reasons and based on your experience; you've probably experienced some or many of those reasons. This article will attempt to answer some of these. However, the key point to remember is that there is not one right or wrong way; the answer depends on different things. It is important to consistently and periodically review and correct.
Another related question that could drive some of these concerns is the role of the architect. There are different views, ranging from the extremes of the architect being totally disconnected from the technology to architects who are totally immersed in technology working on bleeding edge research. The reality tends to be in the middle, where the architect is still expected to be technical and equipped to have skills to converse with non-technical stakeholders.
However, they have complete disregard for any feedback on whether what they produce is useful to any stakeholders. So, picking tools and techniques that would allow the architect focus on his or her primary job is important. Any tool that is over-engineered or makes people spend more time is an absolute no for me. Many architects are convinced that documenting views alone is sufficient.
The industry has come to accept that software architecture cannot be described in a simple one-dimensional model. There are multiple goals and stakeholders and there are different views to address the goals and concerns. Architecture views are representations of the overall architecture that are meaningful to one or more stakeholders in the system. The architect chooses and develops a set of views that will enable the architecture to be communicated to and understood by all the stakeholders and enable them to verify that the system will address their concerns.
Documenting more than views including things like architecture decisions, quality attributes, etc. The views could be produced using different levels of notations. It is not a rule of thumb that they always need to be produced only using formal notations. More formal notations tend to take more time but allow us to produce less ambiguous artifacts. So, what should a good architecture document contain. There are no definite set of rules and these are some of the suggestions that make sense to me.
I believe any document should include an introductory session that introduces the architecture to the audience. We cannot expect the readers of the document to always have all the details. In a good introductory segment, I would include:. We should know who is interested in the architecture, understand what is important to them and should come up with an architecture that should be reflective of their different needs.
These are the very same stake holders who would consume many of the Architecture Artifacts. So, It is important to identify the key stakeholders and discuss with them regarding what they expect from the Architecture and related Documents.
Producing a document that is nowhere referred or that makes people struggle to find the information is as good as not producing the documents. Overall, we have come to a common understanding that describing architecture in a one-dimensional model is pretty complex to represent as well as understand.
One-dimensional models are usually hard to understand and hard to maintain and end up being very poor in satisfying all of the different Stakeholder's concerns. Just like how traditional engineering produces different diagrams Ex: Floor Plans, Electricity, Security , the IT Architect is also expected to produce different views to address the concerns of the StakeHolders.
The approach of producing many different Views allows us to represent complex systems in a manageable and maintainable fashion and satisfies many of the concerns of business and technical stakeholders.
There are different approaches that support this concept and are listed below. In general, the idea is to separate and provide views that support the following or more in detail. There are different nomenclatures available and I am using what I see to be the best fits. Logical views: How different modules work together to provide the business functionality.
Behavior view: The dynamic aspects of the system behavior and the variations. While the views are concerned with the structure of the system, these views focus on the behavior of the system for various internal and external stimuli and other behavior-driven inputs.
Siemen's Four View Model. Rozanski Woods. Archimate View Points. It is important to also document which Views address which of our stakeholder concerns to allow stakeholders to focus on what is important for them. Also there are different tooling avalaible to satisfy the different Views, each satisfying a variety of concerns. It would be a good idea to identify and decide on them across the spectrum to ensure consistency. The many different elements that make up the System interact with each other through interfaces.
They are the key to building the Systems and are important for many stakeholders like Developers, Testers, operational folks etc. The interface documentation should inform what the consumers should know to interact with it in combination with many other elements. Usually the interfaces tend to be documented along with the Module Views as a part of the Views. Though they could be classified as interface documentation and could be produced using some of the standard tooling available, they very well could be a Java or a C Interface.
What are effective architecture documentation guidelines? How do you represent architectural elements and the relations among them? How do you document interface semantics and architectural rationale? How do you provide relevant architectural information to important stakeholders?
Are there templates for architecture documentation? This course provides in-depth coverage of effective software architecture documentation practices that meet the needs of the entire architecture stakeholder community. This course shows software architects how to produce a comprehensive documentation package for a software architecture that is useful to stakeholders. After attending this course, participants will have a better understanding of.
Participants receive a copy of the lecture slides, exercises, and the book Documenting Software Architectures: Views and Beyond - 2nd Edition. Before registering for this course, participants must have experience in designing and developing software-intensive systems understand the basic concepts of software architecture.
If desired, they can gain this understanding by completing the Software Architecture: Principles and Practices course, which is available as instructor-led classroom training and as eLearning. The live-online 4-day course schedule is as follows: Days , p. Eastern Time. This course may be offered by special arrangement at customer sites.
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