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What is SQL? I know it's a 'query' language, but what does that mean?

As you said, SQL is a query language that is used for databases. A 'query' language when referring to databases means that it is the language used to get information out of the database. Databases can be ver...
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Answered by Lauren G. • Computing tutor
3823 Views

What do 0s and 1s have anything to do with Boolean Logic?

In computers, everything is represented with 0s and 1s. While Boolean Logic is often explained using the terms 'true' and 'false', these are actually represented by the numbers 0 and 1. 0 means 'false' and 1...
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Answered by Lauren G. • Computing tutor
3566 Views

How do I factorise x^2 ​- 4?

This is similar to other factorisation problems such as x 2 + 5x - 6. In this problem, you would find prime factors of -6 that add up to 5 (In this case -3, -2). Now, do the exact same with this problem! Thi...
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Answered by Lauren G. • Maths tutor
52871 Views

How do I know if a noun is 'der', 'die' or 'das'?

Think of the noun and its gender as a married couple ! You need to learn the gender of a noun at the same time as learning the noun itself. There are also some tricks to knowing whether a noun is 'der', 'die...
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Answered by Flora L. • German tutor
4564 Views

What were the peacekeeping powers of the League of Nations in the 1920s?

- moral sanctions economic sanctions military sanctions International Court of Justice disarmament
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Answered by Freya M. • History tutor
3590 Views