Technology Questions

In angular.js services are the singleton objects or functions that are used for carrying out specific tasks.
It holds some business logic and these function can be called as controllers, directive, filters and so on.

.NET Framework is a complete environment that allows developers to develop, run, and deploy the following applications:

 => Console applications
 => Windows Forms applications
 => Windows Presentation Foundation (WPF) applications
 => Web applications (ASP.NET applications)
 => Web services
 => Windows services
 => Service-oriented applications using Windows Communication Foundation (WCF)
 => Workflow-enabled applications using Windows Workflow Foundation (WF)

In a correlated query, the outer query is related to the inner query. This means one or more columns in the outer query are referenced. It’s used when the outer queries value is being used by inner query. For example, we need to find which employee had more perks in the current month than they did in the previous month. The correlated subquery is executed for each row of perks information in the parent query to first determine what the perks were for each employee in the previous month. This data, in turn, is compared to perks for each employee in the current month, and only those employees whose perks in the current month were greater that their previous month's perks are returned.

We can tune the report by using index awarness in universe

Canvas is an element that is used for the graphics for the web page. It uses JavaScript to bring the graphics functionality live. It allows easy way to draw the graphics and use different types of tools to create drawing on the web page. Canvas is just a rectangular area that controls the pixel of every element that is used in the web page. Canvas uses methods like paths, circles, etc. The canvas element will be used as follows:

<canvas id="can" width="200" height="100"></canvas>

The canvas element includes id, width and height settings and with the javascript it gets used like:

<script type="text/javascript">

var c=document.getElementById("can");

var ctx=c.getContext("2d");

ctx.fillStyle="#FF0000";

ctx.fillRect(0,0,150,75);

</script>

When a class is derived from another class, then the members of the base class become the members of the derived class. The access modifier used while accessing members of the base class specifies the access status of the base class members inside the derived class.

The syntax to inherit a class from another class in C# is as follows:
class MyNewClass : MyBaseclass