Alan Turing was not a well known figure during his lifetime. But today he is famous for being an eccentric yet passionate British mathematician, who conceived modern computing and played a crucial...

Lesson Objectives: Explain what verification is and why it is used. Create a database that is fully validated. Discuss what validation is and how it helps to reduce human error. Validatio...

The internet is a huge network of computers all connected together. The world wide web (‘www’ or ‘web’ for short) is a collection of webpages found on this network of computers. Your web browser us...

By the end of this lesson, you will be able to: Identify the different types of storage devices Understand the differences, benefits and drawbacks of storage device ...

Sometimes we need computers to remember the information we give it and that it calculates during programs. A variable can be thought of as a box that the computer can use to store a value. The valu...

In standard English, a query means a request for information. In computer programming, it refers to the same thing, except the information is retrieved from a database. However, writing a query re...

Boolean logic is named after the British mathematician and computer science pioneer, George Boole. He is best known for his work on Boolean logic – a concept that is very important in computing. I...

Lesson Objectives: Identify basic features of a database Explain what data is and why it is valuable Create a flat file database Database defined A database is an organized collection of ...

Programs are designed using common building blocks, known as programming constructs. These programming constructs form the basis for all programs. Selection Selection is a programming construct w...

by the end of this lesson you will be able to: Understand what a computer system is Identify different types of computer systems Create algorithms and identify the inputs, process and outpu...