Using the composition mechanism allows conformance checking and pattern identification. On the other hand, how is object consistency maintained in the presence of concurrency? It is fine to send a GB over the network if it saves years of computation – but it is not economic to send a kilobyte question if the answer could be computed locally in a second. At run time, XAML drawings produce a collection of objects representing vector-based drawing primitives. In retrospect, messaging systems such as an e-mail system fulfill a very specific messaging need, such as guaranteed delivery of message across a specific protocol such as SMTP.

The absence of .NET Remoting in the .NET Compact Framework puts some serious constraints on the development of connected smart clients. Additionally, one of the areas of current emphasis is the development of the anisotropic three-dimensional finite element analysis tool.

Do you need DI all over the place, or just in specific places where you know dependencies could be a problem? It is better if some portions of the design are flexible enough to withstand significant amount of change.

TDD assumes the existence of an automated unit testing framework. In contrast, data services can be combined together to provide a single response containing data from multiple services (Reference and Enhanced Delegate).

Microsoft has confirmed that socket support and a rich control set will be added in a future release of Silverlight. Thus, it should be made clear that Web services are an important tool and one implementation method for SOA, but there are other patterns that may be more appropriate for any given use-case. Considering the fact that one of the biggest issues in software systems today is managing the dependencies between objects. To realize larger performance improvements, we must seek better algorithms as per computer geeks. Furthermore, A lock race happens when it’s possible for either of two threads to obtain a lock first, the program breaking if the wrong thread wins.

Is that really wise? The programmer must either convert the object values into groups of simpler values for storage in the database (and convert them back upon retrieval), or only use simple scalar values within the program. The correct mapping in the relational model is between object and type.