Welcome to Open Source !: 2011

Friday, February 18, 2011

XML

XML stands for extensible markup language xml is designed to carry and transport data

Where as Html is just to display data,

Xml can be categorized into 2 types they are

1.well formed xml

2.Validate xml

Rules of an xml

It should be have opening and closing tags

Tags should have properly nested

We can define our own tags

The root element is called parent element and it should have some child elements(tags)

Elements are the tag names and attributes are called their values

Well fomed xml should have to follow the above rules

Validate xml is a well formed xml and it should follow DTD rules and regulations

Validate xml having two types they are

1.DTD

2.Schema

DTD example

-------------------

<!DOCTYPE note
[
<!ELEMENT note (to,from,heading,body)>
<!ELEMENT to (#PCDATA)>
<!ELEMENT from (#PCDATA)>
<!ELEMENT heading (#PCDATA)>
<!ELEMENT body (#PCDATA)>
]>

Schema example

<xs:element name="note">
<xs:complexType>
<xs:sequence>
    <xs:element name="to" type="xs:string"/>
    <xs:element name="from" type="xs:string"/>
    <xs:element name="heading" type="xs:string"/>
    <xs:element name="body" type="xs:string"/>
</xs:sequence>
</xs:complexType>
</xs:element>

Thursday, February 17, 2011

HTML -REFRESH

HTML

-----

Today i just to refresh my brain i go through the w3schools.com doctype--rules of an

language it tells the mark up langauge to browser

DTD(document type definition)

1.strict---it contains all html elements,except font and frameset

2.Transitional--it supports all html elements and attributes except frameset

3.Frameset---it supports all elements and attributes

why we saying before we starting any html language just go through any site it saying a

huge big 3 line statement containing

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01

Transitional//EN"

"http://www.w3.org/TR/html4/loose.dtd"> like this ....any website has validated by some

webstandards the rules must follow any website as per the browser understanding the

document are coming from html and browser will parse...

For validating any website just go to http://validator.w3.org/ in that validator website

you may enter url or just copy paste your own code or website html code it will validate

the errors and returned to you .. and then today i refresh the html language becuase i dont

want to forget anything.

create an new small window in html pages we can declare the height and width

<target> using target we can fetch the element from one location to another location

Now the Latest version of Html is HTML-5 it supports the

<svg>

<video>

new html5 supports videos the biggest challenge is in future versions of browsers we

need not depend on flash player its an heavy weight one using canvas element in html5

supports to draw graphics and pictures in browser with the help of javascript using svg

element we can draw circles, ovals,rectangles,polygon,polyline,line etc., previously for

this we need to depend on some other plugin but now observe web becomes most user

friendly

Saturday, January 29, 2011

Today i tried to install Bitnami stack in windows !

there are lots of stacks (packs) available for developing php environment it consists of lots of many applications and like xampp,wampp,lamp,bitnami etc.,
i just explored the bitnami stack in windows !

today i go through the website bitnami its a stack consisting of (apache,php,mysql)
bitnami is an open source stack it can having so many stacks

it can having the stack of postgresql instead of(mysql)

and also like drupal and joomla and moodle more .,

BitNami Infrastructure Stacks

Infrastructure Stacks are designed for developers and system administrators and provide you a way of deploying a LAMP or Ruby environment, but do not include any extra applications. It is not necessary to download an infrastructure Stack to use an application Stack.

for more information go to www.bitnami.org website

and download the package

and enjoy

and later i encountered the problem of application using port no -80 later i rectified see my blog also for solving the port no-80

Friday, January 28, 2011

How to find out the which application is using port 80 in windows ?

How to find out the which application is using the port 80 ?

Every application that needs to talk to other applications,
needs to have a port number. Every computer can give out port numbers
ranging from 0 – 65535, and once a port number is given,
it cannot be given to another application (while it is running at least)
so, one application is to one port number.
The reason why application have port numbers is so that,
when one application (say Firefox) wants to talk to another
application (in another computer, say Apache; a web server),
Firefox needs to know that when he sends out a message,
it will be received by the intended recipient (Apache),
and this can only be done if Firefox knows exactly where
Apache is. There are 2 components that make up a unique address of
an application — one is the IP address of the machine where the
application is running, and the other component is — you guessed it,
the port number; Collectively these two (IP address and port number)
are known as a socket, but that’s another story, let’s stop here —
What’s important to know is that, port numbers are — well, important;
they determine the uniqueness of an application within a

in windows u enter the command

C:\>netstat -aon | findstr 0.0:80

the pipe symbol extracts and get the input from netstat

TCP 0.0.0.0:80 0.0.0.0:0 LISTENING 560

and then

C:\>tasklist | findstr 560

and the culprit is none other than skype :)

Monday, January 3, 2011

Joined in Bhea

today monday i joined..bhea knowledge technologies
staying accomodation in my cousins room. sunday i departured train from chennai central railway station lalbaugh express at 3.45 pm and reached bangalore city 10.00 pm and reached to my cousin room early morning waked up 6.30 a.m and rushed through to office by bike my cousin dropped me into office thanks to him ..i hope all things will go fine ...this new year resolution for everyone hope dreams come true ...i reached office at 8.30 i met ram sir and said wishes to him ..and later i filled all the formalities of our office ...and i later technical person sanjay interviewed me about the latest web technologies and asking what is json? how u implement it and asking the oops concepts ? asking what i mentioned everything in my resume .nice experience to me ..later i met ram sir he told he can take class after lunch . later reshma (h.r) introduced us to everyone in our office..later we went to lunch with our staff members

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