software architecture team
A component may be logical or physical, technology-independent or technology-specific, large-grained or small-grained. This similarity can be described as an architectural style, which can be thought of as a particular kind of pattern, albeit an often complex and composite pattern (a number of patterns applied together). Another example is that in order to provide a usable system to customers, a decision is made to provide a customer interface that is a human being, rather than an interface implemented in software or hardware. IBM and Red Hat — the next chapter of open innovation. For example, if performance is key, then a decision may be made to implement certain system elements in hardware, rather than software or people. The structural aspects of an architecture manifest themselves in many ways, and most definitions of architecture are deliberately vague as a result. This information is often valuable to the architect when he or she needs to revisit the rationale behind the decisions that were made, so that they don't end up having to unnecessarily retrace steps. Figure 2 shows a UML sequence diagram showing a number of interactions that, together, allow the system to support the creation of an order in an order processing system. static.content.url=http://www.ibm.com/developerworks/js/artrating/ For example, an instance of OrderEntry depends on an instance of CustomerManagement during its execution, as shown by the interactions in Figure 2. However, it is often not possible to meet all of the needs expressed. For example, an architecture for an order processing system may have defined groupings of elements for order entry, account management, customer management, fulfillment, integrations with external systems, persistency, and security.Each of these groupings may require different skill sets. But that is exactly the point -- to show that these terms do exist in the industry, but that there is no consensus on their meaning.As one would expect, there are corresponding forms of architect (for example, software architect, hardware architect, and so on) and architecting (for example, software architecting, hardware architecting, and so on).Now that we've gotten through these definitions, there are many unanswered questions. This is sometimes referred to as "architecture in context." Although other characteristics of these items exist, such as behavior, fitness-for-purpose, and even aesthetics, it is the structural characteristic that is the most familiar and the most-often mentioned.It should not surprise you then that if you ask someone to describe the architecture of a software system he's working on, you'll probably be shown a diagram that shows the structural aspects of the system -- whether these aspects are architectural layers, components, or distribution nodes. Thus, an important consideration is to ensure that you document the decisions that have led to this architecture and the rationale for those decisions.This information is relevant to many stakeholders, especially those who must maintain the system.
What are the benefits of "architecting"? Structure is indeed an essential characteristic of an architecture. What is the role of the software architect? Either the scope can be reduced in order to meet the schedule or all of the functionality can be provided within an extended timeframe. In order to execute, the software runs on some kind of hardware. For example, this information is used when the architecture is reviewed and the architect needs to justify the decisions that have been made.Most architectures are derived from systems that share a similar set of concerns. However, most definitions of architecture do not define the term "component," and IEEE 1471 is no exception, as it leaves it deliberately vague to cover the many interpretations in the industry. However, it is often the case that the architecture is influenced by the initial team structure and not vice versa. Even in the field of software engineering, we often come across different forms of architecture. If the architecture needs to be continually revised due to relatively minor changes, then this is not a good sign.
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