Part of query, object which allows to know parent data container.
For example: Metadata - it's table in DB, also it's container for data rows.
To manipulate objects we should pass
tableName as context
Access Token which is living very long time. This token can be retrieved using API call Database Connect.
When developing own plugin you can use it as Plugin Access Token and keep it in your storage.
This Access Token is living just 1 day. Can be retrieved using API call Auth Subscribe.
To retrieve it you should call that endpoint with Long Access Token.