Information technology (IT) is the application of computers and internet to store, retrieve, transmit, and manipulate data, or information, often in the context of a business or other enterprise. IT...
Primary Key. Imagine what would happen if Mrs Smith telephoned the school to ask the secretary to pass on a message to her daughter Charlotte. If there were ...
Understand database key-words including
Learn about database tables,
Feb 25, 2015
Jun 6, 2011
... from having the same value. The Student ID is the primary key