MethodsThe main HTTP methods (GET, PUT, POST, PATCH and DELETE) can be mapped to CRUD operations as follows - GET retrieves the representation of the resource at a specified URI. GET should have no side effects on the server. - PUT updates a resource at a specified URI. PUT can also be used to create a new resource at a specified URI, if the server allows clients to specify new URIs. For this tutorial, the API will not support creation through PUT. - PATCH updates data in database (not all fields are required). - POST creates a new resource. The server assigns the URI for the new object and returns this URI as part of the response message. - DELETE deletes a resource at a specified URI.Enabling OData Query OptionsWeb API supports the following OData query options:- $expand - Expands related entities inline - $filter - Filters the results, based on a Boolean condition - $orderby - Sorts the results- $select - Selects which properties to include in the response- $skip - Skips the first n results- $top - Returns only the first n the resultsUsing $select, $expand, and $value in Web APIWeb API 2 adds support for the $expand, $select, and $value options in OData. These options allow a client to control the representation that it gets back from the server.$expand causes related entities to be included inline in the response.$select selects a subset of properties to include in the response.$value gets the raw value of a property.