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A wild card is a symbol that means "Anything can match".
It is used in database search queries. For example if you wanted to find all of the men in your database that had a surname starting with Sm, you could use the search term:
When you run the search, the database would return all records which started Sm... such as Smith, Smythe, Smallwood, Smethwick.
If you don't remember the name of a document that you saved, you could use the wildcard to run a search such as *.doc
This would give you a list of every doc file, regardless of its name.
A wild card is part of a family of search symbols called 'Regular Expressions'.
Challenge see if you can find out one extra fact on this topic that we haven't already told you
Click on this link: Wildcard
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