Answer:
A database view is a searchable object in a database that is defined by a query. Though a view doesn't store data, some refer to a views as “virtual tables,” you can query a view like you can a table. A view can combine data from two or more table, using joins, and also just contain a subset of information.
Explanation:
A database view is a subset of a database that is based on a query that runs on one or more database tables. Database views are saved in the database as named queries and can be used to save complete queries that are frequently used.
Answer:
a. $_COOKIE
Explanation:
$_COOKIE represents an associative array of Cookie name and value in PHP. For example in the code below we use the $_COOKIE construct to read the value of a cookie called 'testcookie' provided it has already been set.
<html>
<body>
<?php
if(!isset($_COOKIE["testcookie"])) {
echo "Cookie 'testcookie' is not defined!";
} else {
echo "Value of 'testcookie' is: " . $_COOKIE["testcookie"];
}
?>
</body>
</html>
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