IT articles

 

  . What is the internet? Programming language Network connecting computers all over the world Computer program to transfer data All of these Answer:  B) Network connecting computers all over the world Explanation: The Internet is a network connecting computers all over the world. 2. What is e-mail? Method of exchanging messages via electronic devices Speed message transfer to location Musical messaging service None of these Answer:  A) Method of exchanging messages via electronic devices Explanation: E-mail stands for electronic mail which is a method of exchanging messages via electronic devices. 3. E-mail stands for? Electrical mail Electronic messaging service Electronic mail All of these Answer:  C) Electronic mail Explanation: E-mail stands for electronic mail. It is a method of exchanging messages via electronic devices. 4. What does WWW stand for? Working window web Web window word World Wide Web None of these Answer:  C) World Wide Web Explanation: WWW ...

 

 

 

   SQL (Structured Query Language) is a powerful language used for managing and manipulating  relational databases. Some of the most common SQL commands are:   1.        SELECT : Retrieves data from one or more tables.   SELECT column1, column2 FROM table_name WHERE condition ; 2.        INSERT : Inserts new records into a table.   INSERT INTO table_name (column1, column2) VALUES (value1, value2); 3.        UPDATE : Modifies existing records in a table.   UPDATE table_name SET column1 = value1 WHERE condition ; 4.        DELETE : Removes records from a table.   DELETE FROM table_name WHERE condition ; 5.        CREATE TABLE : Creates a new table in the database.   CREATE TABLE table_name ( column1 datatype, column2 datatype...