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You have completed Intro to Data Analysis!
You have completed Intro to Data Analysis!
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Learn what a SQL is and how it is used to interact with a database.
- SQL vs. NoSQL
- SQL Basics - If you’re in a track or Techdegree, this SQL course may come later. You’re more than welcome to jump into SQL now if you’re interested in the topic, but we suggest following the order of your track or Techdegree.
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are usually the more reliable and
recent form of data, a company has,
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compared to a spreadsheet.
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For projects, you may only need to access
your company's database, but in others,
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you may need to access various databases
to gather the information you need.
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Databases come in two main forms,
relational and non-relational.
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Relational databases or SQL databases
are similar to a spreadsheet.
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They hold data in fixed columns and rows.
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