[Couchdb Wiki] Update of "HttpDatabaseApi" by NoahSlater

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The following page has been changed by NoahSlater:
http://wiki.apache.org/couchdb/HttpDatabaseApi

The comment on the change is:
Copied from original CouchDB wiki

New page:
An introduction to the CouchDB HTTP database API.

== Naming and Addressing ==

A database must be named with all lowercase characters (a-z), digits (0-9), or any of the ''_$()+-/'' characters and must end with a slash in the URL. The name has to start with characters.

{{{
http://couchserver/databasename/
http://couchserver/another/databasename/
http://couchserver/another/database_name(1)/
}}}

'''Uppercase characters are NOT ALLOWED in database names.'''

{{{
http://couchserver/DBNAME/ (invalid)
http://couchserver/DatabaseName/ (invalid)
http://couchserver/databaseName/ (invalid)
}}}

Note also that a ''/'' character in a DB name must be escaped when used in a URL; if your DB is named ''his/her'' then it will be available at ''http://localhost:5984/his%2Fher''.

== List Databases ==

To get a list of databases on a CouchDB server, use the ''/_all_dbs'' URI:

{{{
GET /_all_dbs HTTP/1.01
Date: Thu, 17 Aug 2006 05:39:28 +0000GMT
}}}

And the response:

{{{
HTTP/1.1 200 OK
Date: Thu, 17 Aug 2006 05:39:28 +0000GMT
Content-Length: 37
Content-Type: application/json
Connection: close

["somedatabase", "anotherdatabase"]
}}}

== PUT (Create New Database) ==

To create a new empty database, perform a PUT operation at the database URL. Currently the content of the actual PUT is ignored by the webserver.

On success, HTTP status ''201'' is returned. If a database already exists a ''409'' error is returned.

{{{
PUT /somedatabase/ HTTP/1.0
Content-Length: 0
Date: Thu, 17 Aug 2006 05:39:28 +0000GMT
}}}

Here is the server's response:

{{{
HTTP/1.1 201 OK
Date: Thu, 17 Aug 2006 05:39:28 +0000GMT
Content-Length: 13
Content-Type: application/json
Connection: close

{"ok": true}
}}}

== DELETE ==

To delete a database, perform a DELETE operation at the database location.

On success, HTTP status ''202'' is returned. If the database doesn't exist, a ''404'' error is returned.

{{{
DELETE /somedatabase/ HTTP/1.0
Content-Length: 1
Date: Thu, 17 Aug 2006 05:39:28 +0000GMT
}}}

Here is the server's response:

{{{
HTTP/1.1 202 OK
Date: Thu, 17 Aug 2006 05:39:28 +0000GMT
Content-Length: 67
Content-Type: application/json
Connection: close

{"ok": true}
}}}

== Database Information ==

To get information about a particular database, perform a GET operation on the database, e.g.:

{{{
GET /somedatabase/ HTTP/1.0
}}}

The server's response is a JSON object similar to the following:

{{{
{"db_name": "dj", "doc_count":6830, "update_seq":6830}
}}}