https://training-course-material.com/index.php?action=history&feed=atom&title=Service_ClassificationService Classification - Revision history2026-04-14T23:40:17ZRevision history for this page on the wikiMediaWiki 1.45.1https://training-course-material.com/index.php?title=Service_Classification&diff=7247&oldid=prevIzabela Szlachta at 18:44, 8 November 20122012-11-08T18:44:52Z<p></p>
<p><b>New page</b></p><div>{{Cat|SOA|50}}<br />
{{Soa Links}}<br />
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*There is no a standardized classification (see SoaML)<br />
*The goal of classification is to introduce different SOA layers and stage of expansions<br />
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==A Fundamental Service Classification==<br />
*Basic services<br />
*Composed services<br />
*Process services<br />
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==Stages of SOA expansion==<br />
[[File:Soa-stages-of-soa-expansion.png|350px]]<br />
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==SOA Expansion==<br />
#Fundamental SOA, has only a service layer of basic services<br />
#Federated SOA, which in addition to the basic services has a layer of composed services (this layer might be called an orchestration or composition layer)<br />
#The third stage of expansion is a so-called process-enabled SOA, which has a third layer for process services<br />
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==Basic Services==<br />
*Short-term running and conceptually stateless<br />
*Called synchronously<br />
*There are two types of basic services:<br />
*#Basic data services<br />
*#Basic logic services<br />
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==Basic Data Services==<br />
Read or write data from or to one backend system<br />
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Examples: <br />
*Create a new customer<br />
*Change the address of a customer<br />
*Return the address of a customer<br />
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==ACID Basic Data Services==<br />
*'''Atomic:''' the call of the service either succeeds or has no effect.<br />
*'''Consistent:''' after the service call, the backend is left in a legal, consistent state.<br />
*'''Isolated:''' a service being processed by a backend is not influenced by other service calls running on the same backend at the same time.<br />
*'''Durable:''' after a service call succeeds, it is guaranteed that the effect is persistent.<br />
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==Basic Logic Services==<br />
Basic logic services represent fundamental business rules. These services usually process some input data and return corresponding results.<br />
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Examples:<br />
*Return whether a year is a leap year<br />
*Calculate the commission for a specific period of a specific user<br />
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==Fundamental SOA==<br />
[[File:Soa-fundamental-soa.png|500px]]<br />
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==Composed Services==<br />
Composed services may also map or adapt existing services in some way.<br />
Also be referred to as “adapter services.”<br />
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Examples:<br />
*Transfer money<br />
*Prepare a report containing data from many system<br />
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==Federated SOA==<br />
[[File:Soa-Federated-SOA.png|500px]]<br />
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==Security==<br />
Composed services reintroduce the danger of inconsistencies appearing across backends<br />
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==Process Services==<br />
*Represent long-term workflows or business processes<br />
*Macro flow, which is a long-running flow of activities (services)<br />
*Is interruptible by human intervention<br />
*They have a process state<br />
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Example:<br />
*Shopping cart<br />
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==Service State vs Backend State==<br />
*If the process data becomes “juristic data,” it is probably more appropriate to manage the state in an ordinary backend (e.g. create account)<br />
*If the process data is just some persistent data that has no essential relevance for your business, stateful services are fine (e.g. shopping cart)<br />
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==Other Service Classifications==<br />
*Different Types of Consumers (Public, Private)<br />
*Reading Versus Writing Services<br />
*Business Categorizations (taxonomy)<br />
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==Other Service Classifications==<br />
*Different Types of Consumers (Public, Private)<br />
*Reading Versus Writing Services<br />
*Business Categorizations (taxonomy)<br />
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==Marketing Point of View==<br />
*'''Commodity:''' each participant of the business market has to have (can be outsourced or bought)<br />
*'''Territory:''' functionality that is essential and central to a specific business (business rules)<br />
*'''Value-added:''' reflect the special value an organization brings to the market and differentiate a company from competitors<br />
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==Technical and Infrastructure Services==<br />
*Query deployment information<br />
*Monitor runtime statistics<br />
*Print, log, or trace<br />
*Enable or disable components and systems<br />
*Verify interfaces<br />
*Security related services<br />
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==Questions==<br />
*What are three service layers?<br />
*What are the 3 stages of SOA expansion?<br />
*How can you divide basic services?</div>Izabela Szlachta