Help with understanding collections and user management

Hallo, I have few questions while trying to get used to and use BaseX database in our solution. A) Could be empty collection in a database created? This query db:add("MyDBName","","/NewCollectionName") perforemed in GUI creates collection NewCollectionName but copies there also bunch of other things used as example… I tried also to ADD a xml file to NewCollection which works , new collection was created, but when I deleted that file, collection disappered also ! B) Is it possible to grant various users different access rights to different collections under one database ? Eg. granting access rights to groups of users and/or creating roles ? Regards and thanks for your good job, Jan Matuszek

Hi Jan, Welcome to the list (glad to hear the registration finally worked out).

In BaseX, all collections are of implicit nature: A collection will automatically be created once you add a file as resource to the collection path or name. If you address a collection without contents, you will simply get no results: * Create database with initial document: db:create('db', <x/>, 'collection1/input.xml') * Return all documents in the specified collection: db:open('db', 'collection1')

Access rights can only be granted to databases. However, databases are very light-weight in BaseX, so the usual modus operandi is to create multiple databases, which can all be addressed by a single XQuery expression. See http://docs.basex.org/wiki/Databases for more information. Hope this helps, Christian