How can wildcards help in database searches




















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You can unlock new opportunities with unlimited access to hundreds of online short courses for a year by subscribing to our Unlimited package. Build your knowledge with top universities and organisations. Learn more about how FutureLearn is transforming access to education. Learn more about this course. Using wildcards to search databases Using wildcards to search databases.

Share this post. Family Tree 30 Jun, Over enthusiasm Visit the course. Excellent Geneology Course 11 Nov, Excellent 03 Jul, It was very informative and easy to follow. For example, type colo r to find all records containing color or colour. Type p ediatric to find all records with pediatric or paediatric. To use the? For example, type ne? Question marks at the end of words or character strings are not treated as wildcards.

They are automatically removed from a query. For example, the question marks in the search terms below are ignored when searched:. To use a question mark as a wildcard at the end of a word, you need to put a before the? The hash before the trailing question mark indicates that the question mark should be treated as a wildcard to find exactly one character at the end a word. Note : When searching for a title that ends in a question mark, the symbol should be removed from the search in order to ensure results will be returned.

To use the wildcard, enter your search terms, adding the in places where an alternate spelling may contain an extra character. The database finds all citations of the word that appear with or without the extra character.

For example, type colo r to retrieve results containing color or colour. For example, when running a search for the term colo r, the terms "colors" and "colours" will not be searched which they are by default when using the singular "color" or "colour" without a wildcard operator. This tells the database to search for variations of your search term, allowing you to retrieve more results than when searching with one word. Truncation, also called stemming , allows you to search for all variations of a word with multiple endings.

It uses the root word followed by a truncation symbol at the end. Different databases and search engines use different symbols. Some databases automatically search for plurals but others do not.



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