URI (Uniform Resource Identifier)

A URI (Uniform Resource Identifier) is a string of characters that identifies a particular resource on the Internet. A resource can be anything that can be identified by a URL, such as a web page, an image, or a file.

A URI is a specific type of URL, and the two terms are often used interchangeably. However, a URI can be used to identify any type of resource, while a URL can only be used to identify resources that can be located on the World Wide Web.

URIs can be divided into two categories:

1. Absolute URIs include the complete address of the resource, including the protocol (http://, ftp://, etc.), the domain name, and the path to the resource.

2. Relative URIs do not include the protocol and domain name, and are used to reference resources that are located on the same server as the original resource.

Relative URIs are often used when creating links within a website, as they are more concise and easier to remember than absolute URIs.

What is the use of uniform resource identifier URI?

A uniform resource identifier (URI) is a string of characters used to identify a resource. Such resources include electronic documents, database records, and files. URIs are used in many Internet protocols to refer to resources. In addition, URIs are sometimes used to identify resources in non-Internet protocols.

The most common type of URI is the uniform resource locator (URL), which is used to identify resources on the World Wide Web. Other URI schemes include the uniform resource name (URN) and the uniform resource character string (URI-R). What is the identifier in a URL? The identifier in a URL is the portion of the URL that identifies a specific resource. For example, in the URL http://www.example.com/path/to/resource, the identifier is /path/to/resource. What is URI urn and URL? A URI is a uniform resource identifier, while a URL is a uniform resource locator. A URN is a type of URI that identifies a resource by name.

What is correct URI format?

There is no single "correct" URI format, as different URI schemes have different requirements. However, all URI schemes follow a basic format consisting of a scheme name, followed by a colon (:), followed by a scheme-specific part.

For example, the URI "http://www.example.com" has a scheme of "http", followed by a scheme-specific part of "//www.example.com". The "//" is known as the authority component, and indicates that the URI is referencing a resource on the www.example.com domain.

Different URI schemes have different requirements for the scheme-specific part. For example, the URI "mailto:[email protected]" has a scheme of "mailto", and the scheme-specific part is "[email protected]". This indicates that the URI is referencing a resource that can be used to send email to the [email protected] email address.

In general, a URI can be divided into four main components: the scheme, the authority, the path, and the query. The authority component is not always present, and the query component is only present in some URI schemes.

Here is a more detailed breakdown of each of the components:

Scheme: The scheme indicates the type of URI, and is always followed by a colon (:).

Authority: The authority component is used to indicate the resource being referenced. It is

What is URI in REST API with example?

URI stands for Uniform Resource Identifier and is a way to uniquely identify a resource. In the context of a REST API, a resource is an object that can be accessed via an HTTP request. For example, a resource could be a user, a photo, a blog post, etc.

A URI generally has two parts: a scheme and a path. The scheme defines how the resource will be accessed, while the path identifies the specific resource.

For example, the URI for a user might be:


In this case, the scheme is "http", the path is "users/{id}", and the {id} is a placeholder for the user's unique identifier.

To get more information on URI, check out this tutorial: https://www.w3schools.com/Tags/ref_urlencode.asp