https://training-course-material.com/index.php?action=history&feed=atom&title=WebServicesWebServices - Revision history2026-04-30T08:13:49ZRevision history for this page on the wikiMediaWiki 1.45.1https://training-course-material.com/index.php?title=WebServices&diff=67676&oldid=prevLsokolowski at 19:42, 26 June 20182018-06-26T19:42:14Z<p></p>
<p><b>New page</b></p><div>{{Cat|Web Services Basics For Non-programmers|03}}<br />
<br />
<slideshow style="nobleprog" headingmark="⌘" incmark="…" scaled="true" font="Trebuchet MS" ><br />
;title: Web Services Basics For Non-programmers<br />
;author: Pete George (NobleProg Ltd)<br />
</slideshow><br />
<br />
=Day One Schedule ⌘=<br />
# Introductions<br />
# Service-Oriented Architecture<br />
# Web Services Overview<br />
# XML<br />
# SOAP<br />
=Web Services Overview ⌘=<br />
Learning Objectives<br />
* To understand what a Web service is<br />
* To be aware of the development of Web services<br />
* To understand the reasons for the popularity of Web services<br />
* To be aware of the existence of Web service standards<br />
=Web Services Definition ⌘=<br />
“a software system designed to support interoperable machine-to-machine interaction over a network.”<br />
(W3C)<br />
<br />
“a means to connect services together.”<br />
(Barry, 2013)<br />
=Web Service Architecture ⌘=<br />
[[File:SOA 3.png|400px]]<br />
<br />
=Remote Procedure Call (RPC)⌘=<br />
[[File:Web Services 1.png|400px]]<br />
<br />
=RPC Protocols ⌘=<br />
Protocols, e.g. DCOM, specify:<br />
[[File:WebServices-2.png|50px]]<br />
* What address of target computer looks like<br />
* How data should be packaged<br />
* How response is retrieved<br />
* How to initiate call<br />
* How to handle errors<br />
<br />
=Web Services History ⌘=<br />
[[File:WebServices 2.png|600px]]<br />
<br />
== Web Services History 1 ⌘==<br />
[[File:WebServices 4.png|600px]]<br />
<br />
== Web Services History 2 ⌘==<br />
[[File:WebServices 6.png|600px]]<br />
<br />
== Web Services History 3 ⌘==<br />
[[File:WebServices 7.png|600px]]<br />
<br />
=Web Services Today ⌘=<br />
[[File:WebServices 8.png|600px]]<br />
<br />
=Which Type of Web Service? ⌘=<br />
* Best for your development environment<br />
* Used most by services you will use<br />
* Used most by external services you will use<br />
* All of the above<br />
=Why are Web Services Popular? ⌘=<br />
* Business benefits<br />
* Development benefits<br />
* Snowball effect<br />
=Why are Web Services Popular? ⌘=<br />
* Business benefits<br />
-Easier exchange of data<br />
<br />
-Industry-wide standards <br />
<br />
-More external services available to all<br />
<br />
-Efficient merging of systems (e.g. in acquisitions)<br />
=Easier Data Exchange ⌘=<br />
*Data elements are sent in addition to value<br />
<br />
*XML:<br />
-<element>value</element><br />
<br />
-E.g. <city>Liverpool</city><br />
<br />
*JSON<br />
-“element” : “value”<br />
<br />
-E.g. “city”:”Liverpool”<br />
=What About Mismatches? ⌘=<br />
*Application 1:<br />
-<city>Liverpool</city><br />
<br />
-<town>Cheltenham</town><br />
<br />
*Application 2:<br />
-<city>Liverpool</city><br />
<br />
-<city>Cheltenham</city><br />
=Agreed Data Exchange Standards ⌘=<br />
* Minimize development costs<br />
* Minimize processing errors<br />
=Semantic Vocabularies ⌘=<br />
*Also known as XML Vocabularies<br />
*NB: both XML and JSON can use the same vocabularies/elements<br />
-<city>Liverpool</city><br />
<br />
-“city”: “Liverpool”<br />
=Industry-Wide Standards ⌘=<br />
*Web services created opportunity to establish industry-wide standardized vocabularies<br />
*Two types:<br />
-Common Semantic Vocabularies<br />
<br />
-Specific Semantic Vocabularies<br />
=Common Semantic Vocabularies ⌘=<br />
*EXAMPLES<br />
*Mail.XML<br />
-XML specification for communication.<br />
*eXtensible Customer Relationships Language<br />
-XML standard specification to represent customer relationships in a standard way.<br />
*Open Office XML<br />
-OpenDocument Format (ODF). Open XML-based document file format for office applications.<br />
=Specific Semantic Vocabularies ⌘=<br />
*EXAMPLES<br />
*Flexible Image Transport System Markup Language (FITSML)<br />
-Astronomy XML specification<br />
*HR-XML<br />
-Human Resources XML specification<br />
*DocBook<br />
-XML vocabulary for Publishing industry<br />
=More External Services Available ⌘=<br />
[[File:WebServices 9.png|600px]]<br />
<br />
=Merging Systems ⌘=<br />
[[File:WebServices 10.png|600px]]<br />
<br />
=Why are Web Services Popular? ⌘=<br />
*Development benefits<br />
-Interoperability<br />
<br />
-Reduced development time<br />
<br />
-Reduced maintenance<br />
<br />
-Reduced brittleness<br />
=Interoperability ⌘=<br />
[[File:WebServices 11.png|600px]]<br />
<br />
=Reduced Development Time ⌘=<br />
[[File:WebServices 12.png|600px]]<br />
<br />
=Reduced Maintenance ⌘=<br />
[[File:WebServices 13.png|600px]]<br />
<br />
=Brittleness ⌘=<br />
[[File:WebServices 14.png|600px]]<br />
<br />
=Reduced Brittleness XML ⌘=<br />
[[File:WebServices 15.png|600px]]<br />
<br />
=Reduced Brittleness JSON ⌘=<br />
[[File:WebServices 16.png|600px]]<br />
<br />
=Why are Web Services Popular? ⌘=<br />
*Snowball effect<br />
-Popularity of Web services forced vendors to include in their products<br />
*More Web services in products increases popularity<br />
-Popularity of Web services ….<br />
<br />
-Popularity of Web services create demand for training and tools<br />
*More training and tools increases popularity of Web services<br />
-Popularity of Web services…<br />
<br />
=“WS-” Specifications ⌘=<br />
*No single defined set or governing body for Web service specifications<br />
*“WS-” = shorthand for Web service specifications<br />
-WS-Security, WS-Discovery et al<br />
<br />
-SOAP <br />
<br />
-XML<br />
<br />
-etc<br />
<br />
=Quiz – No Prizes! No Pressure! ⌘=<br />
[[File:WebServices 02.png|600px]]</div>Lsokolowski