Difference Between Url And Uri Pdf

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What's a URI and why does it matter?

Below is additional information about each of the sections of the http URL for this page. The "http" stands for Hypertext Transfer Protocol.

It let's the browser to know which protocol it is going to use to access the information specified in the domain. Next, "www" stands for World Wide Web and is used to distinguish the content. This portion of the URL is not required and many times can be left out.

This portion of the address can also be substituted for an important sub page known as a subdomain. Next, "computerhope. The last portion of the domain is known as the domain suffix, or TLD. It is used to identify the type or location of the website. For example, ". There are several domain suffixes available. To get a domain, you would register the name through a domain registrar. Next, "jargon" and "u" are the directories where the web page is on the server.

In this example, the web page is two directories deep. Finally, url. The trailing. Other common file extensions on the Internet include. Each of these file extensions performs a different function, like all the different types of files on your computer. A URL is located at the top of the browser window in the address bar or omnibox depending on your browser window. On desktop computers and laptop , unless your browser is being displayed in fullscreen the URL is always visible.

In most smartphone and tablet browsers, the address bar containing the URL will disappear as you scroll down and only show the domain when visible. When the address bar is not visible, scroll up the page. If only the domain is shown, tapping on the address bar shows the full address.

Most video sharing pages, such as YouTube , also have sharing links below the video or in the video. Using these sharing links is another method you can get the URL of the video. You can open a URL by clicking a hyperlink. For example, if you click "hyperlink" in this paragraph, it opens a page describing hyperlinks. If a URL is in printed material, e.

If the URL is in an e-mail, it can also be copied and pasted into the address bar. Some printed material may also have a QR code that can be scanned with your smartphone to open a web page. Most people realize that a space is not allowed in a URL. However, it is also important to realize, as documented in RFC , the URL string can only contain alphanumeric characters and the! Any other characters that are needed in the URL must be encoded. When a URL points to a script that performs additional functions, additional information parameters is added to the end of the URL.

For example, a search engine URL pointing to a search results page includes a parameter with the search query words. Below is an example URL that points to the Computer Hope search page, with the search query parameter of "example search".

In this URL, the script file being pointed to is search. Because this file ends with. After the script file name is a? In our example, because there is a variable the script would use it as it is executed. Scripts are also not limited to only one variable. In the above example, there are two different variables.

The "q" variable equals "example search" and the "example" variable equals "test". If the script was looking for an example variable, it could be processed and perform an additional feature.

An IP address is a unique number that's assigned to each device on a network. When typed e. A domain name is used instead of an IP address because it's easier for humans to remember. For example, it's easier to remember "computerhope. See our IP address for further information about an IP. You could think of a domain name like a picture of a house and the IP address as the house's address. The picture gives you a representation of what the house looks like but without the address you'd never be able to locate that house.

Home Dictionary U - Definitions. Overview of a URL. Where is the URL located? How to open an URL. What characters are not allowed in a URL? Understanding more complex URLs and parameters. Related pages. Internet help and support. Tip Most video sharing pages, such as YouTube , also have sharing links below the video or in the video.

Tip Some printed material may also have a QR code that can be scanned with your smartphone to open a web page. Tip You could think of a domain name like a picture of a house and the IP address as the house's address. Related pages Does capitalization and spaces matter in Internet addresses? How to create small easy to read URL. How to copy a web page link or URL. Tip to automatically complete a URL.

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Networking Basics: What's the Difference Between URI, URL, and URN?

Join Stack Overflow to learn, share knowledge, and build your career. Connect and share knowledge within a single location that is structured and easy to search. A URI can be further classified as a locator, a name, or both. The term "Uniform Resource Locator" URL refers to the subset of URIs that, in addition to identifying a resource, provide a means of locating the resource by describing its primary access mechanism e. The term "Uniform Resource Name" URN has been used historically to refer to both URIs under the "urn" scheme [RFC] , which are required to remain globally unique and persistent even when the resource ceases to exist or becomes unavailable, and to any other URI with the properties of a name. If you haven't already read Roger Pate's answer , I'd advise doing so as well.

Frequently Asked Questions

A URL is a global address of documents and protocols to retrieve resource on a computer network. In this URL Vs. What is URI?

It is a very commonly used way to locate resources on the web. It provides a way to retrieve the presentation of the physical location by describing its network location or primary access mechanism. The protocol is described within the URL which is employed to retrieve the resource and resource name.

Uniform Resource Identifier

These things were called URLs, for Uniform Resource Locators, in the early days of the Web, and the change from URL to URI is either hugely significant or completely irrelevant, depending on who's talking—I won't have anything to say about this issue here. Historically, URIs were mostly seen as simply the way you accessed web pages. These pages were hand-authored, relatively stable and simply shipped out on demand.

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W3C liability , trademark , document use , and software licensing rules apply. This paper addresses and attempts to clarify two issues pertaining to URIs, and presents recommendations. Section 3 mentions additional unresolved issues not considered by this paper and section 4 presents recommendations. This section describes the status of this document at the time of its publication. Other documents may supersede this document. Please address your feedback to uri w3. The confusion owes to the incompatibility between two different views of URI partitioning, which we call the "classical" and "contemporary" views.

RFC A Uniform Resource Locator URL , colloquially termed a web address , [1] is a reference to a web resource that specifies its location on a computer network and a mechanism for retrieving it. Most web browsers display the URL of a web page above the page in an address bar. The format combines the pre-existing system of domain names created in with file path syntax, where slashes are used to separate directory and filenames. Berners-Lee later expressed regret at the use of dots to separate the parts of the domain name within URIs , wishing he had used slashes throughout, [10] and also said that, given the colon following the first component of a URI, the two slashes before the domain name were unnecessary. The URI generic syntax consists of a hierarchical sequence of five components : [14].

One obstacle to getting to the bottom of things is that the relevant RFCs are extremely dense, confusing, and even contradictory. A URI can be further classified as a locator, a name, or both. RFC , Section 1. The URI itself only provides identification; access to the resource is neither guaranteed nor implied by the presence of a URI. Each URI begins with a scheme name , as defined in Section 3.


Similar to URL, URI (Uniform Resource Identifier) is also a string of characters that identifies a resource on the web either by using location, name.


A Uniform Resource Identifier URI is a unique sequence of characters that identifies a logical or physical resource used by web technologies. URIs may be used to identify anything, including real-world objects, such as people and places, concepts, or information resources such as web pages and books. Some URIs provide a means of locating and retrieving information resources on a network either on the Internet or on another private network, such as a computer filesystem or an Intranet , these are Uniform Resource Locators URLs. The web technologies that use URIs are not limited to web browsers. In , Tim Berners-Lee 's proposals for hypertext implicitly introduced the idea of a URL as a short string representing a resource that is the target of a hyperlink.

Below is additional information about each of the sections of the http URL for this page. The "http" stands for Hypertext Transfer Protocol. It let's the browser to know which protocol it is going to use to access the information specified in the domain.

3 Response
  1. Fedora Z.

    KEY DIFFERENCES: · URL is a subset of URI that specifies where a resource exists and the mechanism for retrieving it, while URI is a superset of.

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