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Query
A query is a request for information from a database which matches a set of criteria.
You use queries all the time when you use a search engine such as Google. You type in the term that you want some information about and click 'search'. The search engine looks through its database and displays a list of results which match the term that you used.
If you are setting up a query directly to a database, for example the coding that goes on behind the scenes many web sites, then the developer will most likely use a formal language called 'Structured Query Language' or SQL to set up the query.
Challenge see if you can find out one extra fact on this topic that we haven't already told you
Click on this link: Database Query
2020-10