Web Services is an entity Which provide external functionality our web sites

1. WEB SERVICES
Bhargav Tailor
bhargavtailor6@hotmail.com
9974218047

2. WHY WEB SERVICES NEEDED
…………..?
 While creating a website that display Local, national
and International news to its user .
 So that you do not have enough resource and budget to
collect the latest news and keep the content of website
up-to-date.
 we can easily do this , we can gather the news from
other News websites and simply display on our websites
 We can do this easily with the help of Web services ,
Which allow your website to communicate with the
other News websites

3. WHAT IS ACTUALLY WEB
SERVICES..?
 A web services is an entity that can be
programmed to provide a particular functionality
to any number of application over the internet
 Web services can be use by any web application ,
no matter whatever programming language is
used or hardware platform and operating system
on which application is running
 Web services does not have any user interface . It
just provide s specific services to website
 Before web services is introduce there is many
technologies are used such as DCOM and
CORBA but web services is more popular

4. FULL FORM OF DCOM & CORBA
 DCOM : - Distributed Component Object Model
 CORBA : - Common Object Request Broker
Architecture

5. [CONT..]
 Web services are most appropriate to be used while
communicating across cross-platform or making
trusted connection between server and the client

6. BENEFITS OF WEB SERVICES
 It is simple because of which they can be
implemented on various platform
 Web services is loosely coupled because of which
their interface and methods can be extended
 Web services do not carry any state information
from web pages

7. HOW CALL WEB SERVICES
METHOD…?

8. WEB SERVICES COMPLIES WITH
COMMON INDUSTRY STANDARDS ..
Simple Object Access Protocol (SOAP)
Web Services Description Language
(WSDL)

9. SOAP (SIMPLE OBJECT ACCESS PROTOCOL)
 SOAP allows web services to communicate with
other Web Application over the Internet .
 SOAP is a simple XML-based Protocol to let
exchange information over HTTP. SOAP is a
Protocol for accessing Web services .
 SOAP Specifies a format for the XML Message
using which the web application request and
receive we services from a web Server

10. TWO FEATURES OF SOAP SUPPORT FOR
THIS
[CONT..]
 Remote Procedure Calls : Remote web application
sends a SOAP message that contains a request to
a Procedure of Web services .
 Platform Independent : Web services can be
developed using any programming language not
necessary to use same language used in web
application

11. WSDL (WEB SERVICES DESCRIPTION
LANGUAGE)
 WSDL allow consumer of a Web services to know
about the web services before interacting with it.
 It describe all the information required to use a
Web services that are Following.
Operation : Refer to the mechanism used by the
web services to exchange message with the
consumer of the web services.
Bindings : Refer to the protocol used by the web
service to the interact with consumer of the web
services .
Endpoint : Refer to the Location of a Binding.

12. [CONT..]
 We can use WSDL to describe a web services
with the help of XML therefore you can use
WSDL to describe a web services that can be
used by the application create using different
platform and programming language .
 WSDL is a document written in XML. The
document describes a Web service. It specifies
the location of the service and the operations the
service exposes.

13. MAJOR ELEMENT OF WSDL
[CONT..]
 <type> : A container for data type definitions
used by the web service.
 <message> : A typed definition of the data being
communicated.
 <portType> : A set of operations supported by one
or more endpoints.
 <binding> : Describe how a protocol can be used
with particular Interface

14. LOCATING WEB SERVICES..
 The URL of the web services that you want to
use in your application , so you will just place it
in a configuration file .
 In other situation you might have to search URL
of the Web services at application runtime .
 There is two method to search URL for web
services.
 DISCO (Discovery)
 UDDI (Universal Description ,Discovery and
Integration)

15. DISCO..
It a standard that creates a list of related web
services in a file, called DISCO file .
An Organization can publish its own DISCO
file on the server, so that client can accessed
this file to determine what all web services are
available

16. UDDI
 It a Centralized directory where different Web
services offered by different Organization are
published
 Client can Search required Web services in the
Directory

17. THANK YOU