IT2353 –WEB TECHNOLOGY–Unit 5–2Marks with ans–Reg 2008

Anna University

DEPARTMENT OF INFORMATION TECHNOLOGY

IT2353 –WEB TECHNOLOGY

Regulation 2008

Two Marks with Answers

Unit V


SUBJECT CODE : IT2353

SUBJECT NAME:WEB TECHNOLOGY

Year / Class : 111rd yr IT

Semester : 6th sem


Unit 5

Two Marks with Answers


1. What is SOAP? (Simple Object Access Protocol)

• SOAP is an XML based protocol that allows applications to easily over the internet using XML documents called AOAP message.

• A SOAP message contains an envelope, which is a structure that describes a method call.

• A SOAP message’s body contains either a request or a response.

• A request message’s body contains a Remote Procedure Call (RPC), which is a request for another machine to perform task.

• The RPC specifies the method to be invoked and any parameters the method takes.

• The application sends the SOAP message via an HTTP POST. A SOAP response message is an HTTP response document that contains the results from the methods call (e.g. return values, error messages.)


2. WHAT IS THE USE OF WEB SERVICES?

• Web services encompass a set of related standards that can enable two computer

• The data is passed back and forth using standard protocols such as HTTP, the same protocol used to transfer ordinary web pages.

• Web services operate using open, text-based standards that enable components written in different languages and on different platforms to communicate.

• They are ready to use pieces of software on the Internet. XML, SOAP, Web Services Description Language (WSDL) and Universal Description, Discovery and Integration (UDDI) are the standards on which web services rely.

• UDDI is another XML based format that enables developers and business to publish and locate Web services on a network.


3. What do you mean by JDBC?

• JDBC Part of the Java Development Kit which defines an application-programming interface for Java for standard SQL access to databases from Java programs.


4. Define ODBC.

• It is a standard for accessing different database systems. There are interfaces for Visual Basic, Visual C++, SQL and the ODBC driver pack contains drivers for the Access, Paradox, dBase, Text, Excel and Retrieve databases.


5. What are the advantages of web services?

Reusable application-components.

There are things applications need very often. So why make these over and over again?

Web services can offer application-components like: currency conversion, weather reports, or even language translation as services.

Connect existing software.

Web services can 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.


6. List out some web service technologies?

XML,

SOAP,

WSDL


7. What is XML ?

Extensible markup language. It offer a standard, flexible and inherently extensible data format, XML significantly reduces the burden of deploying the many technologies needed to ensure the success of Web services.


8. What is SOAP?

Service Oriented Architecture Protocol.

It provides a standard, extensible, composable framework for packaging and exchanging XML messages. In the context of this architecture, SOAP also provides a convenient mechanism for referencing capabilities (typically by use of headers).


9. What is WSDL?

Web Services Description Language

WSDL is a language for describing Web services. WSDL describes Web services starting with the messages that are exchanged between the requester and provider agents. The messages themselves are described abstractly and then bound to a concrete network protocol and message format.


10. 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


11.How Does web services Work?

The basic Web services platform is XML + HTTP.

XML provides a language which can be used between different platforms and programming languages and still express complex messages and functions.

The HTTP protocol is the most used Internet protocol.


12. WHAT ARE THE VARIOUS Web services platform elements?

• SOAP (Simple Object Access Protocol)

• UDDI (Universal Description, Discovery and Integration)

• WSDL (Web Services Description Language)


13. WHAT ARE THE TYPES OF Web SERVICES AND ITS USES?

Reusable application-components.

There are things applications need very often. So why make these over and over again?

Web services can offer application-components like: currency conversion, weather reports, or even language translation as services.

Connect existing software.

Web services can 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.


14. WRITE SHORT NOTES ON Web Services Technologies?

Web service architecture involves many layered and interrelated technologies. There are many ways to visualize these technologies, just as there are many ways to build and use Web services.


15. WRITE SHORT NOTES ON SOAP.

SOAP 1.2 provides a standard, extensible, composable framework for packaging and exchanging XML messages. In the context of this architecture, SOAP 1.2 also provides a convenient mechanism for referencing capabilities (typically by use of headers).

[SOAP 1.2 Part 1] defines an XML-based messaging framework: a processing model and an exensibility model. SOAP messages can be carried by a variety of network protocols; such as HTTP, SMTP, FTP, RMI/IIOP, or a proprietary messaging protocol.


16. DEFINE WSDL.

WSDL 2.0[WSDL 2.0 Part 1] is a language for describing Web services.

WSDL describes Web services st

arting with the messages that are exchanged between the requester and provider agents. The messages themselves are described abstractly and then bound to a concrete network protocol and message format.

17. Draw the architecture of UDDI.


18. WRITE SHORT NOTES ON UDDI

Universal Description, Discovery, and Integration (UDDI) The directory shown in the above figure could be a UDDI registry. The UDDI registry is intended to eventually serve as a means of \"discovering\" Web Services described using WSDL . The idea is that the UDDI registry can be searched in various ways to obtain contact information and the Web Services available for various organizations. How much \"discovery\" will be used in the early days of Web Services is open to discussion. Nevertheless, even without the discovery portion, the UDDI registry is a way to keep up-to-date on the Web Services your organization currently uses. More on Universal Description, Discovery, and Integration (new window). An alternative to UDDI is the ebXML Registry (new window).


19. EXPLAIN DTD for XML Schemas

XML documents are processed by applications§

Applications have assumptions about XML documents§

DTDs allow to formalize some of these constraints§

Part of the constraint checking must still be programmed§


20. WHAT ARE Modeling DTDs.?

Data models can be mapped to many different DTDs§

What is a good DTD? What is a bad DTD?§

How does the DTD affect further processing§


21. WHAT ARE THE SOAP Related Technologies?

SOAP is a simple XML-based protocol to let applications exchange§ information over HTTP.

In our SOAP tutorial, you will learn what SOAP is, and how it uses XML to§ exchange information between applications.


22. DEFINE SOAP structure

SOAP once stood for \'Simple Object Access Protocol\' but this acronym was dropped with Version 1.2 of the standard.[1] Version 1.2 became a W3C recommendation on June 24, 2003. The acronym is sometimes confused with SOA, which stands for Service-oriented architecture; however SOAP is different from SOA.


23. What is SOAP?

• SOAP stands for Simple Object Access Protocol

• SOAP is a communication protocol

• SOAP is for communication between applications

• SOAP is a format for sending messages

• SOAP communicates 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