Android training in chandigarh

SOAP

SOAP is a protocol designation for shuffle structured information in the application of Web

 Services in computer networks. It depends on Extensible Markup Language (XML) for its 

message format, and normally depend on other Application Layer protocols, most notably 

Hypertext Transfer Protocol (HTTP) and Simple Mail Transfer Protocol (SMTP), for information 

agreement and transmission.

Consuming SOAP web services from Android

"Though SOAP based web-services are limited in these days, but there are lots of  those services 
from Android, it is very important to know the procedure of consuming"Though SOAP based 
web-services are limited in these days, but there are lots of old companies whose web-services
 are still SOAP-based. If anyone wants to consume those services from Android, it is very 
important to know the procedure of consuming SOAP-based webservice.
Now, we will learn how to consume SOAP web services from Android. Before starting

code, we have to collect some information:

SOAP_ACTION

METHOD_NAME

NAME SPACE

URL

Parameter List

Request XML/ SOAP_BODY

SOAP_MESSAGE (for Nested Parameters and Multiple Namespaces)

Now, the question is how can we get these information? if your client or service provider 

give you all the information, you won’t need anything and know more about

 Android Training in Chandigarh.

How it works?

URL: It is the url of WSDL file.

NAMESPACE: The targetNamespace in WSDL.

METHOD_NAME: It is the method name in web service. We can have several

methods.

SOAP_ACTION: NAMESPACE + METHOD_NAME.

You can obtain above details by reading WSDL file of web service.

The soap web service that we are going used in this example have only one

method that takes a number as parameter and find its square.

How to call soap web service?

• First create request object of SoapObject class.
• Now add information to request object that you want to send to web service.

       This is done using PropertyInfo class.

• Create soap envelope using SoapSerializationEnvelope class.
• Assign request object to envelope using setOutput SoapObject().
• Create object of HttpTransportSE() class. Using this object call the

soap web service.

• We can get return from web service by using getResponse() method

of SoapSerializationEnvelope class. The response is gathered into SoapPrimitive  

reference variable.

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Computer Courses In Chandigarh

INTRODUCTION

,FUNCTIONS,CHARACTERISTICS AND 

GENERATION OF COMPUTERS 

What is a (Digital) Computer?

A computer is an electronic device system that accepts raw data as inputs, action and employ them 

in digital form to give outputs (results) and store them for future use.

Functionality of a computer:

·         Inputs from Input devices.

·         Store or hold the input data.

·         Process by CPU (Central Processing Unit).

·         Output from Output devices.

·         Store in memory.

Characteristics of Computer

·         Speed

·         Accuracy

·         Diligence

·         Versatility

·         Storage and memorizing

·         Automatic

·         Processing

·         Non-intelligent

Speed:

·         A computer can do numbers of tasks with in a fraction of time for which a human takes a 

longer period of time even days or month.

·         Capable of processing a very large amount of data.

·         Speed in terms of microsecond, nanosecond and pica-second.

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Accuracy:

·         The result produced by a computer can be of higher precision and accuracy.

·         Its accuracy can be increased higher as requirements.

·         Provide outputs based on inputs.

Diligence (Carefulness):

·         It is hard-working and keeps working until it is stopped.

·         It keeps on working according to the program and do not feel tiredness or being lazy.

Versatility:

·         Flexibility, changeability.

·         Same computer can be used for different jobs or work.

·         More usefulness.

·         Same computer for different task.

Storage and Memorizing:

·         A computer can store large amount of data.

·         Once stored, it can be used any time as needed and don’t forget the data.

·         Can store different types of data (Image, Text, audio etc).

Automatic:

·         Once programmed, it automatically keeps doing the task.

Processing:

·         Large amount of data and commands are processed in the computer.

·         As requirement data are processed and gives an output.

·         Every task need to be processed.

Non-intelligent:

·         Absence of intellectualism.

·         It can not decide what to do.

·         It keeps working how it has been programmed to do.

·         No logical thinking if not programmed.

Applications of Computer

·         Education, Library and Design

·         Industries and Manufacturing

·         Research, Survey and Simulation

·         Hospital and Health

·         Data Processing

·         Science and Engineering

·         Offices and Hotel Management

·         Advertisement and Marketing.

·         Entertainment and Communication.

·         Weather Forecasting

·         Airlines and Navigation

Advantages of Computer

·         Computers are much more accurate and reliable than any other devices and human beings.

·         They are very much useful for repeated jobs which are difficult and tedious for humans to do.

·         Computers are much faster than humans.

·         With the help of computer, complicated things are easy to simulate and show.

·         It is versatile and can perform various types of works.

·         Because of the availability of storage, data can be store for future use and programs can be 

modified to add features for different purpose.

·         No repeated jobs so save time, labor and physical wastage (Draft) material.

·         Communications technologies have advanced a lot with the use of computers.

Disadvantages Of Computer:

·         It is expensive and is beyond the reach of poor people. This limitation is being 

overcome because its cost is drastically decreasing day by day. 

·         It is an electronic machine, so there is much danger of electric shock and 

other physical damage.

·         Since people are getting more relied upon computer, sometimes the failure in 

devices and programs can produce unreliable information and cause loss of data 

in a great extent.

·         It increases dependency on machine. Even for every simple calculation 

people need them.

·         Although it helps in faster and cheaper communication, there is much danger 

for security leakage.

·         It increases piracy of intellectual properties (movies, publications etc) in big 

volume.

·         Since computers are used in sensitive areas like national defense, 

civil  aviation, banking, even a simple fault can cause loss of life and property.  

Generations of Computers

·         First Generation (Vacuum tube based).

·         Second Generation (Transistor based.)

·         Third Generation (Integrated Circuit based.)

·         Fourth Generation (VLSI microprocessor based.)

·         Fifth Generation(Bio-Chips & Artificial Intelligence)

First Generation:

·         The period of first generation was 1942-1954.

·         Vacuum tubes (Valves) as basic components for memory and circuitry for CPU.

·         Very large in size occupying entire room.

·         Consume large amount of power (electricity) and produce large amount of heat.

·         Punch cards and Paper tapes were used as Input and Outputs were limited on printouts.

·         Use of machine level language.

·         Storage capacity was limited to 1KB-4KB.

·         Slow operating speeds and slowest than all of the other generations’ computers..

fig:First generation computer

·         Example: UNIVAC and ENIAC.

Second Generation:

·         The period of second generation was 1952-1964.

·         Transistors were used instead of vacuum tubes.

·         Smaller in size as compared to First generation computers.

·         Consumed less power and generate less heat compare to First generation 

computers.

·         Faster and reliable than First generation computers.

·         Assembly language and high level programming like FORTAN, COBOL were 

used.

·         Use of magnetic core technology in place of magnetic drum.

·         Magnetic core memories for internal storage, and magnetic disk and tapes for 

auxiliary memory.

fig:Second generation computer

·         Example: ATLAS , Mark III, IBM 7000

Note: A transistor is a small electronic device made up of semiconductor material like germanium 

and silicon. It is much smaller in size as compared to vacuum tubes and consumes less power. In 

1947, Bell Laboratory introduces the first transistor and was used in computer in 1958.

Third Generation:

·         The period of third generation was 1964-1972.

·         Integrated Circuits (ICs) were used in place of transistors.

·         Smaller in size than second generation as many transistors can be integrated 

in an IC.

·         Low power consumption than previous generation.

·         High level language like FORTAN-II, ALGOL-68 were used.

·         More reliable and efficient than previous generation computers.

·         Keyboard and monitor as input and output device.

·         Real-time and multi-programming Operating system were used.

·          

fig:Third generation computer

·         Example: IBM-360 series, IBM-370/168

Fourth Generation:

·         The period of Fourth Generation was 1972-present.

·         Use of Very Large Scale Integration (VLSI) technology and microprocessor.

·         Since thousands of transistors and other circuits were integrated in a single 

chip, size of computer drastically decreased.

·         Cheaper in price and lower power consumption.

·         Major achievement in computer technology took place in this era including 

hardware and software.

·         Still using the computer from this generation.

·         Highly accurate, reliable & operation speed.

·         Massive use of magnetic and optical storage device.

·         Multiprocessing, Multiprogramming, multimedia and distributed computing 

possible.

·         Concept of internet was introduced.

·         Introduction of PC’s for general people.

fig:Fourth generation computer

·         Example : IBM PC, Pentium PC

Fifth Generation:

·         The use of parallel processing and superconductors.

·         More user friendly interface with multimedia features.

·         Quantum computation, molecular and nanotechnology uses that will change 

the face of computer.

·         Development of devices to respond to natural language input.

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