Technology Questions

They are DEFINE CLUSTER, DATA and INDEX.

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>

UNION selects only distinct values whereas UNION ALL selects all values and not just distinct ones

I/O operations like reading or writing a file is not possible with client-side javascript. However , this can be done by coding a Java applet that reads files for the script. 

We can tune the report by using index awarness in universe

A network in which there are multiple network links between computers to provide multiple paths for data to travel.

ADO or Active X Data objects, allows developers to create applications that can interoperate well with other data application services.