The PUT and DELETE methods are part of WebDAV, which is an extension of the HTTP protocol and allows for the management of documents and files on a web server. It is used by developers to upload production-ready web pages onto the web server. PUT is used to upload data to the server whereas DELETE is used to remove it. In modern day applications, PUT and DELETE are also used in web services to perform specific operations on the database. PUT is used for insertion or modification of records and DELETE is used to delete, disable, or prevent future reading of pieces of information.