Sia webservices
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This document provides an overview and summary of key concepts related to web services including XML, SOAP, WSDL, and APIs. It was presented by 7 students from the BS(IT) morning section at semester 7. The document defines web services and discusses their use for integration within and between organizations. It describes the typical web service architecture involving service providers, registries, and requestors. SOAP and WSDL are explained as protocols for messaging and describing web services. The document also distinguishes between APIs and web services, and provides examples of API calls for UDDI registries.
Sia webservices
- 2. TOPIC :WEB SERVICES(XML,SOAP,WSDL,API) Presented By : Saad Munir Khan Roll No:1123 Presented By : Abdul Manan Roll No:1141 Presented By : Waseem Roll No: 1189 Presented By : Bushra Kausar Roll No: 1165 Presented By : Shahida Roll No: 1181 Presented By : Afifa Ramzan Roll No: 1209 Presented By : Zain Aslam Roll No: 1231 BS(IT) MORNING SECTION “A” SEMESTER (“7th”)
- 3. Name: Saad Munir khan Roll No: 1123 3
- 4. What Is Web Services? DEFINITION: WEB SERVICES (SOMETIMES CALLED APPLICATION SERVICES) ARE SERVICES (USUALLY INCLUDING SOME COMBINATION OF PROGRAMMING AND DATA, BUT POSSIBLY INCLUDING HUMAN RESOURCES AS WELL) THAT ARE MADE AVAILABLE FROM A BUSINESS'S WEB SERVER FOR WEB USERS OR OTHER WEB-CONNECTED PROGRAMS. 4
- 5. What Is Web Services?(CONT.) Definition By IBM: “A Web service is an interface that describes a collection of operations that are network accessible through standardized XML messaging” 5
- 6. What Is Web Services?(CONT.) Microsoft: XML Web Services: “.. Expose useful functionality to Web users through a standard Web protocol” “.. Provide a way to describe their interfaces in enough detail to allow a user to build a client application to talk to them” “.. Are registered so that potential users can find them easily” 6
- 7. Why Web Services? From business standpoint Integration Within an organization Between companies Allows time/cost efficiencies Purchase orders Answering inquiries Processing shipment requests 7
- 8. Web Service Architecture Service-Oriented Architecture Service Registry Service Requestor Service Provider Find Publish Bind
- 9. XML Leveraging Features II XML Schemas: Alternative to DTDs for describing document structure ( A DTD defines the actual elements, attributes, and element relationships that are valid in documents.) (DTD : Document Type Definition) Written in XML Simple types Complex types 9
- 10. XML Leveraging Features II Simple Types: Allows atoms of Data(Elements or Attributes values) that cannot be divided further . Hence only elements that do not have child Elements or attributes are of simple types. <xs:element name="xxx" type="yyy"/> where xxx is the name of the element and yyy is the data type of the element <xs:element name="lastname" type="xs:string"/> <xs:element name="age" type="xs:integer"/> <xs:element name="dateborn" type="xs:date"/> XML Schema has a lot of built-in data types. The most common types are: xs:String xs: Decimal xs: Integer xs: Boolean xs: Date xs: Time 10
- 11. XML Leveraging Features II(Complete). Complex Types: Can contain Other Elements and Attributes. <xs:element name="employee" type="fullpersoninfo"/> <xs:complexType name="personinfo"> <xs:sequence> <xs:element name="firstname" type="xs:string"/> <xs:element name="lastname" type="xs:string"/> </xs:sequence> </xs:complexType> <xs:complexType name="fullpersoninfo"> <xs:complexContent> <xs:extension base="personinfo"> <xs:sequence> <xs:element name="address" type="xs:string"/> <xs:element name="city" type="xs:string"/> <xs:element name="country" type="xs:string"/> </xs:sequence> </xs:extension> </xs:complexContent> </xs:complexType> In the example above the "employee" element must contain, in sequence, the following elements: "firstname", "lastname", "address", "city", and "country". 11
- 12. Name :Bushra Kausar Roll No:1165 12
- 13. SOAP(Simple Object access Protocol)Cont. Web service messaging and invocation(Invoking a Web service refers to the actions that a client application performs to use the Web service.) Definition: “It is A Protocol in Which Exchange of Structured Information.” Structure mean(Header And Body). 13
- 14. SOAP History In 1998 I. The term SOAP Coined at Microsoft. In 1999 I. SOAP 1.0 Released in December . II. Submitted to IETF. In 2000 I. SOAP 1.1 submitted to W3C with IBM. II. IBM releases a java SOAP with implementation. III. Sun start work on WEB Services. In 2001 I. SOAP 1.2 released By XML Protocol working Group at W3C. II. Currently now 80+ SOAP implementation available Including Apple. 14
- 15. A SOAP fault is an error in a SOAP (Simple Object Access Protocol) communication resulting from incorrect message format, header-processing problems, or incompatibility between applications. ... A message that includes a fault element is known as a fault message 15
- 16. Name :Afifa Ramzan Roll No 1209 16
- 17. SOAP SOAP (Envelope): The SOAP envelope indicates the start and the end of the message so that the receiver knows when an entire message has been received. SOAP (Header): The optional Header element offers a flexible framework for specifying additional application-level requirements. SOAP (Body): The body must be contained within the envelope and must follow any headers that might be defined for the message. 17
- 18. Name :Waseem Roll No:1189 18
- 19. WSDL Web Services Definition Language Predecessor Includes : CORBA (CORBA stands for Common Object Request Broker Architecture. The original idea was to create a single universal standard for how objects across different platforms, programming languages, network protocols can communicate with each other in a seamless manner) Some More of Information: SOAP Contract Language (Microsoft). First submitted to W3C in Sep 2000 Current version is 1.1 19
- 20. WSDL Define a web service in WSDL by Writing an XML document conforming to the WSDL specs Describes three fundamental properties What a service does Operations (methods) provided by the service How a service is accessed Data format and protocol details Where a service is located Address (URL) details 20
- 21. Tmodel(The tModel is an abstraction for a technical specification of a service type; it organizes the service type's information and makes it accessible in the registry database. Another UDDI data structure, the binding Template organizes information for specific instances of service types) 21
- 22. Name :Shahida Parveen Roll No: 1181 22
- 23. APIAn API (Application Programming Interface) is the means by which third parties can write code that interfaces with other code. A Web Service is a type of API, one that almost always operates over HTTP (though some, like SOAP, can use alternate transports, like SMTP). Difference Between API And WEB Services API: An application programming interface (API) is a set of routines, data structures, object classes and/or protocols provided by libraries and/or operating system services in order to support the building of applications WEB Services: A Web service (also Web Service) is defined by the W3C as "a software system designed to support interoperable machine-to-machine interaction over a network" 23
- 24. API Generally accessible Find_binding Find_business, find_relatedBusiness Find_service Find_tmodel Get_bindingDetail Get_businessDetail Get_serviceDetail Get_tModelDetail 24
- 25. Publishing API Restricted access Save_service, save_business, save_binding, save_tModel Delete_service, delete_business, delete_binding, delete_tModel Get_binding, get_registeredInfo, get_authToken 25
- 26. THANKYOU FOR YOUR LISTENING ANY QUESTIONS . 26