Hi @Shambhu Rai , this intro document does a good job explaining what the REST API does and how you can use it. You mentioned you wanted an example with a linked service such as a database. This document details how you can list the containers in a storage account. For example, you can send this request:
GET https://myaccount.blob.core.windows.net/?comp=list&maxresults=3 HTTP/1.1
And you would receive back a detailed set of containers from your query:
<?xml version="1.0" encoding="utf-8"?>
<EnumerationResults ServiceEndpoint="https://myaccount.blob.core.windows.net/">
<MaxResults>3</MaxResults>
<Containers>
<Container>
<Name>audio</Name>
<Properties>
<Last-Modified>Wed, 26 Oct 2016 20:39:39 GMT</Last-Modified>
<Etag>0x8CACB9BD7C6B1B2</Etag>
<PublicAccess>container</PublicAccess>
</Properties>
</Container>
<Container>
<Name>images</Name>
<Properties>
<Last-Modified>Wed, 26 Oct 2016 20:39:39 GMT</Last-Modified>
<Etag>0x8CACB9BD7C1EEEC</Etag>
</Properties>
</Container>
<Container>
<Name>textfiles</Name>
<Properties>
<Last-Modified>Wed, 26 Oct 2016 20:39:39 GMT</Last-Modified>
<Etag>0x8CACB9BD7BACAC3</Etag>
</Properties>
</Container>
</Containers>
<NextMarker>video</NextMarker>
</EnumerationResults>
Please let me know if you have any questions and I can help you further.
If this answer helps you please mark "Accept Answer" so other users can reference it.
Thank you,
James