Do I need MySQL if hosting company has it?

Question by cknoce: Do I need MySQL if hosting company has it?
I am teaching myself MySQL & PHP but the one thing that isn't clear is this: If my web hosting company offers MySQL, do I still need to download it onto my computer?

Reading the paragraph one way makes it seem like I don't since the hosting company offers it, but then read it another way and it sounds like I do need to in order to build the database. Once built, I can then then transfer it to the hosting company.

Can

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