.NET Building Blocks is a set of core Internet Services.
Web Services are main building blocks in the Microsoft .NET programming model.
What are Web Services?
- Web services are application components
- Web services communicate using open protocols
- Web services are self-contained and self-describing
- Web services can be discovered using UDDI
- Web services can be used by other applications
- XML is the basis for Web services
How Does it Work?
The basic Web services platform is XML + HTTP. The HTTP protocol is the most used Internet protocol. XML provides a language which can be used between different platforms and programming languages and still express complex messages and functions.
Web services platform elements:
- SOAP (Simple Object Access )
- UDDI (Universal Description, Discovery and Integration)
- WSDL (Web Services Description Language)
Using Web services, your application can publish its function or message to the rest of the world. Web services use XML to code and to decode data, and SOAP to transport it (using open protocols). With Web services, your accounting department's Win 2k server's billing system can connect with your IT supplier's UNIX server.
Web Services have Two Types of Uses :
1)Reusable application components.
There are things applications need very often. So why make these over and over again? Web services can offer applications components like currency conversion, weather reports, or even language translation as services. Ideally, there will be only one type of each application component, and anyone can use it in their application.
2)Connect existing software.
Web services help to solve the interoperability problem by giving different applications a way to link their data. With Web services you can exchange data between different applications and different platforms.
What is SOAP?
SOAP is a simple XML-based protocol to let applications exchange information over HTTP. Or more simple: SOAP is a protocol for accessing a Web Service.
- SOAP stands for Simple Object Access Protocol
- SOAP is a communication protocol
- SOAP is a format for sending messages
- SOAP is designed to communicate via Internet
- SOAP is platform independent
- SOAP is language independent
- SOAP is based on XML
- SOAP is simple and extensible
- SOAP allows you to get around firewalls
- SOAP is a W3C standard
What is WSDL?
WSDL is an XML-based language for describing Web services and how to access them.
- WSDL stands for Web Services Description Language
- WSDL is based on XML
- WSDL is used to describe Web services
- WSDL is also used to locate Web services,
- WSDL is a W3C standard
What is UDDI?
UDDI is a directory service where businesses can register and search for Web services.
- UDDI stands for Universal Description, Discovery and Integration .
- UDDI is a directory for storing information about web services .
- UDDI is a directory of web service interfaces described by WSDL .
- UDDI communicates via SOAP.
- UDDI is built into the Microsoft .NET platform
Internet Storages
.NET offers secure and addressable places to store data and applications on the Web. Allowing all types of Internet devices (PCs, Palmtops, Phones) to access data and applications.These Web Services are built on Microsoft's existing NTFS, SQL Server, and Exchange technologies.
Internet Dynamic Delivery
Reliable automatic upgrades by demand and installation independent applications..NET will support rapid development of applications that can be dynamically reconfigured.
Internet Identity
.NET supports many different levels of authentication services like passwords, wallets, and smart cards.These services are built on existing Microsoft Passport and Windows Authentication technologies.
Internet Messaging
.NET supports integration of messaging, e-mail, voice-mail, and fax into one unified Internet Service, targeted for all kinds of PCs or smart Internet devices.These services are built on existing Hotmail, Exchange and Instant Messenger technologies.
Internet Calendar
.NET supports Internet integration of work, social, and private home calendars. Allowing all types of Internet devices (PCs, Palmtops, Phones) to access the data.These services are built on existing Outlook and Hotmail technologies.
Internet Directory Services
.NET supports a new kind of directory services that can answer XML based questions about Internet Services, far more exactly than search engines and yellow pages.These services are built on the UDDI standard.
