The peer to peer computing architecture contains nodes that are equal participants in data sharing. All the tasks are equally divided between all the nodes. The nodes interact with each other as required as share resources.A diagram to better understand peer to peer computing is as follows −Characteristics of Peer ... Read More

Volatile and Non-Volatile storage are the two forms of storage in any computer system.Volatile StorageThis is a type of computer memory that remains while there is power and the data is lost when power is switched off. A prime example of volatile memory is RAM. It is a type of ... Read More

The jQuery :contains() Selector is used to check whether a string contains a substring in jQuery.Set the substring you are searching for in the contains() method as shown below:$(document).ready(function(){    $("p:contains(Video)").css("background-color", "blue"); });Now, let us see the complete code to check whether a string contains a substring or not:Example Live Demo ... Read More

To make a textarea and input type read only, use the attr() method .For readonly, set the input type text and textarea as read only as shown below:$('input[type="text"], textarea').each(function(){    $(this).attr('readonly', 'readonly'); });The following is the code to set readonly to textarea and input type:Example Live Demo jQuery Example   ... Read More

fTo disable and enable checkbox, use the attr() method.Initially set the input type checkbox and disable it −MaleNow on the click of a button, toggle between disabled and enabled checkbox −$("#button1").click(function() {    $("#sName").attr('disabled', !$("#sName").attr('disabled')); });Example Live Demo jQuery Example               $(document).ready(function() {   ... Read More

To make a jQuery function call after “X” seconds, use the siteTimeout() method.On button click, set the following and fade out the element. Here, we have also set the milliseconds. This is the delay that would occur before fading an element:$("#button1").bind("click", function() {    setTimeout(function() {       $('#list').fadeOut();}, ... Read More

Database SecurityDatabase security has many different layers, but the key aspects are:AuthenticationUser authentication is to make sure that the person accessing the database is who he claims to be. Authentication can be done at the operating system level or even the database level itself. Many authentication systems such as retina ... Read More

In a distributed database management system, the database is not stored at a single location. Rather, it may be stored in multiple computers at the same place or geographically spread far away. Despite all this, the distributed database appears as a single database to the user. A diagram to better ... Read More

To insert a new row into table at a certain index, use the jQuery val() and insertBefore() method. You can try to run the following code to learn how to insert new row into table −ExampleLive Demo     jQuery Example       $(document).ready(function(){     ... Read More

To set the content of an iframe without src, use the jQuery html() method. You can try to run the following code to learn how to set the content of an iframe without src attribute −ExampleLive Demo      jQuery Selector                 ... Read More