QUESTION 20How do you write "Hello TECH 3500!" in PHP? Document.Write('Hello TECH 3500!'); print Hello TECH 3500! echo "Hello TECH 3500!"; "Hello TECH 3500!"; QUESTION 21How do you create an array in PHP? $colors = "Blue", "Red", "Yellow"; $colors = array["Blue", "Red", "Yellow"]; $colors = array("Blue", "Red", "Yellow"); $colors = {"Blue", "Red", "Yellow"}; QUESTION 22What does acronym AJAX stands for? Asynchronous jQuery And XML Asynchronous jQuery And XHTML Asynchronous JavaScript And XML Asynchronous JavaScript And XHTML QUESTION 23What does PHP stand for? Personal HyperText Processor HyperText Preprocessor Private Home Page None of these QUESTION 24Which superglobal variable holds information about headers, paths, and script locations? $_SERVER $_GET $GLOBALS $_SESSION QUESTION 25Which SQL keyword is used to sort the dataset? SORT BY SORT ORDER ORDER BY QUESTION 26AJAX allows web page to dynamically _______________ Reload at times Control other pages Change content Connect to other addresses QUESTION 27With the help of AJAX you can _____________ Update a web page without reloading the page All of the mentioned Send data to a server - in the background Receive data from a server - after the page has loaded QUESTION 28With SQL, how can you return all the records from a table named "Users" sorted descending by "LastName"? SELECT * FROM Users ORDER BY LastName DESC SELECT * FROM Users SORT BY LastName' DESC SELECT * FROM Users ORDER LastName DESC SELECT * FROM User SORT 'LastName' DESCENDING QUESTION 29Which SQL statement is used to insert new data in a database? INSERT INTO ADD NEW ADD INTO INSERT NEW QUESTION 30Which SQL statement is used to return only different values? SELECT DIFFERENT SELECT CONST SELECT DISTINCT SELECT UNIQUE QUESTION 31AJAX makes our web pages ________ More interactive and faster More Dynamic Easy to connect web page with server More Responsive QUESTION 32Which Web browser is the least optimized for AJAX? Opera Internet Explorer Safari Firefox QUESTION 33With SQL, how do you select all the columns from a table named "Users"? Select Users Select *.Users Select [all] from Users Select * from Users QUESTION 34What makes Ajax unique? It uses Java as its programming language. It works as a stand-alone Web-development tool. It makes data requests asynchronously. It works the same with all Web browsers. QUESTION 35What is/are the benefit(s) of using web services? All of the mentioned Web services use standardized industry standard protocol for the communication. Web services allows you to expose the functionality of your existing code over the network. Once it is exposed on the network, other application can use the functionality of your program. Web services allow various applications to talk to each other and share data and services among themselves. QUESTION 36With SQL, how can you delete the records where the "FirstName" is "Will" in the Users Table? DELETE FirstName = 'Will' FROM Users DELETE ROW FirstName = 'Will' FROM Users DELETE FROM Users WHERE FirstName = 'Will' DELETE FROM Users WHERE LastName = 'Will' QUESTION 37There are currently several functions on the call stack that are in the process of running. The event queue is empty.A mouseclick event occurs and puts a new task onto the event queue.What happens next? The mouseclick task occurs first because it is asynchronous and then the functions on the call stack resume running The mouseclick never occurs because the event happened while the call stack was not empty Both the mouseclick task and the call stack functions run at the same time The call stack finishes running and then the mouse click task gets put on the call stack to run

In PHP, echo statement is used to print string/message on the console. Syntax: echo "Message"; To…

Answered: QUESTION 20 How do you write "Hello…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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QUESTION 20

How do you write "Hello TECH 3500!" in PHP?

		Document.Write('Hello TECH 3500!');
		print Hello TECH 3500!
		echo "Hello TECH 3500!";
		"Hello TECH 3500!";

QUESTION 21

How do you create an array in PHP?

		$colors = "Blue", "Red", "Yellow";
		$colors = array["Blue", "Red", "Yellow"];
		$colors = array("Blue", "Red", "Yellow");
		$colors = {"Blue", "Red", "Yellow"};

QUESTION 22

What does acronym AJAX stands for?

		Asynchronous jQuery And XML
		Asynchronous jQuery And XHTML
		Asynchronous JavaScript And XML
		Asynchronous JavaScript And XHTML

QUESTION 23

What does PHP stand for?

		Personal HyperText Processor
		HyperText Preprocessor
		Private Home Page
		None of these

QUESTION 24

Which superglobal variable holds information about headers, paths, and script locations?

		$_SERVER
		$_GET
		$GLOBALS
		$_SESSION

QUESTION 25

Which SQL keyword is used to sort the dataset?

		SORT BY
		SORT
		ORDER
		ORDER BY

QUESTION 26

AJAX allows web page to dynamically _______________

		Reload at times
		Control other pages
		Change content
		Connect to other addresses

QUESTION 27

With the help of AJAX you can _____________

		Update a web page without reloading the page
		All of the mentioned
		Send data to a server - in the background
		Receive data from a server - after the page has loaded

QUESTION 28

With SQL, how can you return all the records from a table named "Users" sorted descending by "LastName"?

		SELECT * FROM Users ORDER BY LastName DESC
		SELECT * FROM Users SORT BY LastName' DESC
		SELECT * FROM Users ORDER LastName DESC
		SELECT * FROM User SORT 'LastName' DESCENDING

QUESTION 29

Which SQL statement is used to insert new data in a database?

		INSERT INTO
		ADD NEW
		ADD INTO
		INSERT NEW

QUESTION 30

Which SQL statement is used to return only different values?

		SELECT DIFFERENT
		SELECT CONST
		SELECT DISTINCT
		SELECT UNIQUE

QUESTION 31

AJAX makes our web pages ________

		More interactive and faster
		More Dynamic
		Easy to connect web page with server
		More Responsive

QUESTION 32

Which Web browser is the least optimized for AJAX?

		Opera
		Internet Explorer
		Safari
		Firefox

QUESTION 33

With SQL, how do you select all the columns from a table named "Users"?

		Select Users
		Select *.Users
		Select [all] from Users
		Select * from Users

QUESTION 34

What makes Ajax unique?

		It uses Java as its programming language.
		It works as a stand-alone Web-development tool.
		It makes data requests asynchronously.
		It works the same with all Web browsers.

QUESTION 35

What is/are the benefit(s) of using web services?

		All of the mentioned
		Web services use standardized industry standard protocol for the communication.
		Web services allows you to expose the functionality of your existing code over the network. Once it is exposed on the network, other application can use the functionality of your program.
		Web services allow various applications to talk to each other and share data and services among themselves.

QUESTION 36

With SQL, how can you delete the records where the "FirstName" is "Will" in the Users Table?

		DELETE FirstName = 'Will' FROM Users
		DELETE ROW FirstName = 'Will' FROM Users
		DELETE FROM Users WHERE FirstName = 'Will'
		DELETE FROM Users WHERE LastName = 'Will'

QUESTION 37

There are currently several functions on the call stack that are in the process of running. The event queue is empty.
A mouseclick event occurs and puts a new task onto the event queue.
What happens next?

		The mouseclick task occurs first because it is asynchronous and then the functions on the call stack resume running
		The mouseclick never occurs because the event happened while the call stack was not empty
		Both the mouseclick task and the call stack functions run at the same time
		The call stack finishes running and then the mouse click task gets put on the call stack to run

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