WebServices und serviceorientierte Architektur (German Edition)
Service Implementation Patterns -- Ch.
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Service Security Patterns -- Ch. Service Contract Design Patterns -- Ch. Legacy Encapsulation Patterns -- Ch. Service Governance Patterns -- pt.
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Service Composition Design Patterns -- Ch. Capability Composition Patterns -- Ch. Service Messaging Patterns -- Ch. Composition Implementation Patterns -- Ch. Service Interaction Security Patterns -- Ch.
SOA rocks! - Adventures of a service oriented architect
Transformation Patterns -- pt. Supplemental -- Ch. Common Compound Design Patterns -- Ch. Strategic Architecture Considerations -- Ch. Principles and Patterns at the U. Department of Defense -- pt. Appendices -- App. Case Study Conclusion -- App. Candidate Patterns -- App. Principles of Service-Orientation -- App. Patterns and Principles Cross-Reference -- App. Patterns and Architecture Types Cross-Reference. Web service contract design and versioning for SOA by Thomas Erl 22 editions published between and in English and held by WorldCat member libraries worldwide "For Web services to succeed as part of SOA, they require balanced, effective technical contracts that enable services to be evolved and repeatedly reused for years to come.
Now, the world's best-selling SOA author and a team of top industry experts present the first end-to-end guide to designed and governing Web service contracts in support of SOA. Cloud computing design patterns by Thomas Erl 13 editions published between and in English and Undetermined and held by WorldCat member libraries worldwide. At present, all of these situations hit businesses in terms of high costs and wasted time . Much progress has been achieved recently from architectural and technological point of view to solve these problems.
From a technological perspective, the structure of programming languages moved from the assembly programming to the procedural programming and finally to the object-oriented programming structure where the latter became common for use.
This phase transition was very helpful in reaching the solution of the problems mentioned at the beginning of this section. Since in the assembly programming there was a separate programming language for each processor type, the software developer was not able to program for other processors after learning a processor-specific programming language. Such a structure brings the software developer many difficulties and limits the usage of the software , . With the development of procedural programming languages in which the developed codes can be translated into the machine code, we came one step closer to the solution point.
The development concerned has the dependency on processor-type and programming language of software developer eliminated. However, there are still a couple of important missing features in procedural programming languages, although the structure has allowed the applicability to different processors types and programming became easier.
The most important missing features were the incomprehensibility and no documentation ability of the software. All these issues were on the next stage of the software development world, namely object-oriented programming, where a bit more was overcome. In object-oriented programming, the software developers are not stuck to a particular processor type and the codes are comprehensible and documentable. In the object-oriented programming, firstly abstract classes and the necessary objects of the classes mentioned still abstract are developed and then the objects are placed by programming for use .
Overall, to provide the documentation of object-oriented languages some notations have also been created. The structure of object-oriented languages allows the development of such notations and in fact, in this problematic area, these named developments have been very helpful. The open questions today are if last condition in software development can be improved and if the dependency by a single object-oriented programming language can be resolved because even though object-oriented the programs are developed with a single programming language and under normal conditions the combined use of programming languages is impossible .
This case can be presented as if one would have spoken to a person who speaks only one language with many different languages. One of the best solutions for this mentioned case, a single common language could be created to which all spoken languages must be translated simultaneously.
In the software world this can be obtained through the software architecture on which the common language is XML eXtensible Markup Language. Along with the above mentioned developments in software development and the solution of the problems designated at the entry of this section, a lot of innovation has been implemented in the software architecture area. Although at the start of the software development process the developer did not pay a great attention to the software architecture as long as the processes have been realized, this area has reached today the point where it is payed the most attention .
In fact, the software architecture today is very necessary in the software world just as architecture in the building industry as software industry has now reached a very large size. The documentation of the software should be guaranteed by people who need the software and this documentation should be understood by the software developer. To create documentation of software is very important in many ways, but one could emphasize this importance with a small example.
Software is created and treated by a software team and a company then uses this software to automate the business processes, and the company may be forced later to change the processes according to the needs of the market. Therefore, it would need a change in the structure of the software. In this case, if one assumes that the documentation of the software was not created, the change can only be done by the development team. Nowadays the process change requirements in this area have become common and after a certain time the same software developers are very unlikely to be in the same workplace.
However, the quality of architectural planning is very important. Finding the right software architecture approach and its implementation according to the needs would also increase its efficiency . In the previous paragraph the requirements for software architecture have been described. However, in this section the varieties of software architecture approaches and their advantages over each other are emphasized.
The event-driven architecture targets to get the inputs of the software functions from an event of the external world and the outputs then are calculated and returned according to the programmed functions . In this case, the software will be developed in time responding to the needs and this brings nowadays certain big advantages.
Service-oriented architecture is another software architecture approach that is often performed nowadays. In this software architecture style, the functions are grouped under service referred structures. These services are required to provide a conceptual integrity. Therefore, it is easier to manage the software . The combination of the two types of architecture as event-driven service-oriented architecture approach that combines the advantages of these approaches has started to be used as a new architectural style.
In such architecture, the main processes are set as event driven, the sub-processes, however, as service oriented . This case allows software developer a structure which is flexible and which immediately responds to events and can also be controlled. However, although service-oriented architecture has many advantages over time, it requires at the beginning of the application a long-term planning. This means that the ratio of the efficiency of the service generated is in direct proportion to the quality of the planning time. Whether it is combined with an event-driven architecture approach or pure service-oriented architecture is applied, it is necessary that the plans are carried out in light of specific methods so that SOA can give out its best efficiency.
Only the creation of Web services and their use may often cause inability to see the big picture and make full use of services. It may be that in many cases SOA can be a burden instead of benefit for developers and businesses. In this phase, the overall structure of a service-oriented architecture is shown and its principles are emphasized.
In this stage, the structure of a SOA that can show these effects is taken under consideration.
Software-Architektur: Grundlagen - Konzepte - Praxis (German Edition)
SOA achieves all these benefits through its divided structure which can be easily assembled and disassembled as needed. The divided parts of a SOA are called services. However, these services get the desired structure by the design of the well-known web services in a different way.
The SOA-based services are developed according to the requirements of eight basic principles. Service composability can be imagined as shown in Figure 1. Fig ure 1. Imagination of service composability  Due to these principles, developed services are capable to solve most of the problems that were mentioned at the beginning of this section and may be met in the software world.
To achieve all of these principles in a combined manner by a service unfortunately is not as simple as written in this publication.
For this reason, it makes more sense to follow a specific and relevant methodology. As already mentioned, when a SOA is not properly planned and introduced at the beginning with a more accurate expression for the case that it does not realize the above named principles essentially it can cause more harm than advantage to a system. Unfortunately, when not acted in a proper way, SOA projects in many cases may be cancelled or postponed .
The most important principle for the purposes of this study is the principle of discoverability. In fact, performing a very effective information management is required in order to achieve a proportional qualitative SOA. This can make the discoverability principle more efficient and in this way the quality of the implemented SOA can be increased.
One can obtain in the problem definition section more information about this topic. This can be by passed with a reference for the smartphone. In some Asian countries, such as Japan and South Korea a great extent of sales are generated already via mobile commerce. CrossRef Google Scholar. Becker, J; Dreyer, H. Teubner Verlag, Stuttgart , S. Becker, J. Berbner, R. In: Wirtschaftsinformatik 47 , 4, S. Dostal, W. Eberhardt, A.
Gouscos, D. Huhns, M. Jain, H. Keller, A. McGovern, J.
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Papazoglou, M. Parnas, D. Poccianti, P. Richter, J. In Informatik Spektrum 28 5, S.