The basic standardization concept of EDIFACT is that there are uniform message types called United Nations Standard Message. The message types have exactly one nickname consisting of six uppercase English alphabets. The message begins with UNH and with UNT.

Symmetric Key Encryption	ASymmetric Key Encryption
Same key is used for both encryption and decryption	Different keys is used for encryption and decryption
Speed of encryption or decryption is very fast	Speed of encryption or decryption is comparatively slow
Plain text and cipher text are of same size	The size of cipher text is always greater than plain text.
Algorithms like DES, AES, RC4 uses symmetric key encryption	Algorithms like RSA, ECC, DSA use asymmetric key encryption
The number of key used grows exponentially with the numbers of users	The number of key used grows linearly with the numbers of users
Provides confidentiality.	Provides confidentiality, authenticity and non- repudiation.

No	Basic	Debit card	Credit card
1.	Transaction limit	Associated with your account.	Work as a short term borrowing instrument.
2.	Repayment requirement	No repayment required.	Repayment of used fund with in stipulated period.
3.	Penalty	No Penalty	Interest after due date and penalty on new payment.
4.	Credit score	Does not impact credit score.	Over dues, non payment and dues settlement can negatively impact the credit score.
5.	EMI facility	You can't buy items on EMI.	You can buy items on EMI.

Name-your own price websites are just like normal retail sites. In contrast, the buyer negotiates with the retailer for a particular product or service. https://in.hotels.com/

(i) Free software is a concept developed in the 1980s by an MIT computer science researcher, Richard Stallman who defined four conditions, as outlined by the nonprofit Free Software Foundation.
(ii) These "four freedoms" emphasize the ability of users to use and enjoy software as they see fit.
(iii) Freeware usually refers to proprietary software that users can download at no cost, but whose source code cannot be changed.

The four main components used in the Ethernet Cabling are
(i) Patch cable [Twisted pair]
(ii) RJ45 connector
(iii) Ethernet ports
(iv) Crimping tool

URL	Domain Name
(i) It is sequence of labels. Sequence of labels are separated by dot(.)	(i) URL is the address of a document on the Internet
(ii) Domain name is always read from the lower level to higher level (ie) From leaf node to root node.	(ii) URL is made up of four parts - protocols, hostname, folder name and file name.
(iii) Since the root node always represented  NULL string, all the domain name ending with dot.	(iii) Each part has its own specific functions.Depending on the applications, additional information can be added to the URL.

There are four total layers of TCP/IP protocol, each of which is listed below with a brief description.
(i) Network Access Layer - Concerned with building packets.
(ii) Internet Layer - describes how packets are to be delivered.
(iii) Transport Layer - ensure the proper transmission of data.
(iv) Application Layer - application network processes. These processes include File transfer Protocol (FTP), Hypertext Transfer Protocol (HTTP), and simple Mail Transfer Protocol (SMTP).

Cloud storage
1. It is just storage of data on online, access in different area no geographical limits was in need.
2. Cloud storage provides users with immediate access to a broad range of resources.
Cloud computing:
1. It is the on demand availability of computer system resources.
2. Especially data storage and computing power, without direct active management by the user

Syntax:
mysqli_connect("Server Name","User Name","password","DB Name");
Example:

Post Method	Get Method
The input data sent to the server with POST method is stored in the request body of the client's HTTP request.	The input data sent to the server with POST method via URL address is known as query string. All input data are visible by user after they click the submit button.

1. Do whileloop always run the statement inside of the loop block at the first time execution.
2. Then it is checking the condition whether true or false.
3. It executes the loop, if the specified condition is true.
Syntax:
do
{code to executed;
}while (condition is true);

(i) In if...else if...else statements, more than one block of statement can execute based on the condition and user needs.
(ii) If we want to check for another condition in the else part, choose if... elseif ... else statement
(iii) Unlike else, it will execute that alternative expression only if the elseif conditional expression evaluates to "True value.

Array is a concept that stores more than one value of same data type in single array variable.
They are 3 types of array concepts in PHP.
(i) Indexed Arrays,
(ii) Associative Array and
(iii) Multi-Dimensional Array.
Usage of Array:
When combined with foreach statement which allows loop through an array quickly with very little code.

(i) A web server's main purpose is to store web files and broadcast them over the internet for you site visitor's to see.
(ii) In-essence, a web server is simply a powerful computer that stores and transmits data via the internet.
(iii) When someone visits a web page on your site their browser communicates with your web server, sending and receiving information that ultimately dictates what appears on the visitor's computer screen. Thus, the main purpose of a web server is to store and transfer web site data upon the request of a visitor's browser.

Cardinality is defined as the number of items that must be included in a relationship (i.e) number of entities in one set mapped with the number of entities of another set via the relationship The three classifications in Cardinality are one-to-one, one-to-many and Many-to-Many.
In the above example we have two entities Person and Vehicle. If we consider a person driving vehicle, then we have one-to-one relationship between Person and Vehicle.
In the above example, Customer places the Order is a one-to-many relationship. Here the customer can place multiple orders and the order is related to only one customer.
The example of many-to-many relationship is Students registering the Courses. A student can register more than one courses and A course can be registered by many students. Hence it is many-to-many.

(i) Any text (or) object that you place on the master page will appear on the entire document pages to which the master is applied.
(ii) It shortens the amount of time because you don't have to create the same objects repeatedly on subsequent pages.
(iii) Master pages commonly contain repeating logos, page numbers, headers and footers.
(iv) They also contain non-printing layout guides, such as column guides, ruler guides and margin guides.

Team comprises of members playing various roles and responsibilities like Script Writer. Production Manager, Content Specialist, Editor, Graphics Architect, Multimedia Architect, Audio and Video specialist, Computer Programmer and Web Master.