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A query string is a part of a uniform resource locator (URL) that assigns values to specified parameters. A query string commonly includes fields added to a base URL by a Web browser or other client application, for example as part of an HTML document, choosing the appearance of a page, or jumping to positions in multimedia content.
As part of a GET request, some data can be passed within the URL's query string, specifying (for example) search terms, date ranges, or other information that defines the query. As part of a POST request, an arbitrary amount of data of any type can be sent to the server in the body of the request message.
Query parts depend on the URI scheme and are evaluated by the server—e.g., http: supports queries unlike ftp:. Fragments depend on the document MIME type and are evaluated by the client (web browser). Clients are not supposed to send URI fragments to servers when they retrieve a document. [1] [2]
However, the order of parameters in a URI may be significant (this is not defined by the standard) and a web server may allow the same variable to appear multiple times. [9] Removing unused query variables. A page may only expect certain parameters to appear in the query; unused parameters can be removed. Example:
URL is a useful but informal concept: a URL is a type of URI that identifies a resource via a representation of its primary access mechanism (e.g., its network "location"), rather than by some other attributes it may have. [19] As such, a URL is simply a URI that happens to point to a resource over a network.
Expanding and narrowing your query allows you to add or subtract from the result set by setting additional parameters for your search. A few of the most common and useful examples include: Search for exact matches using quotation marks When you conduct a keyword search, the results will contain all of your keywords but not necessarily as one ...
URL scheme in the GNOME desktop environment to access file(s) with administrative permissions with GUI applications in a safer way, instead of the insecure-considered sudo, gksu & gksudo. GNOME Virtual file system
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