Login

An account is required to use the 4D-client or to access unpublished data. The list of users is administered in 4D by admin (Grobe, Sieger, Diepenbroek). User name and password are identical for 4D-client, web-clients and PangaWiki. (A global login, also including data in the file system is in preparation). A user can have three different roles:
 * admin: is allowed to edit any kind of information,
 * curator: is able to change meta-information which was imported under their account and has access privilege for ART,
 * user: has read only access.

Access of individual users or groups of users to unpublished or login protected data sets can be defined with the access right button on the data set level:
 * select those data sets for access right definition,
 * click on the access right button,
 * select data sets in the lower 'Data set' list window,
 * drag and drop a user or a group on the data sets,
 * the new definition of access rights will be listed in the 'Rights' window,
 * click 'Save'.

Data sets having a status of less than published have the login flag checked and can be accessed by PI and admin. Published data sets have the login flag unchecked by default, but the flag may be set on request. Data sets should never consist of both, published and unpublished data.

A user in the web will get a data set:
 * if the data set is published and the login flag is unchecked,
 * if the user is logged in and has imported the data set,
 * if the user is logged in and is listed as PI for the requested data set,
 * if the user is logged in and has been given access rights to the data set,
 * if the user is logged in and has admin role.

In principle the administration of user accounts should be kept at a minimum. In projects it might be usefull to define one project-user to make all unpublished data accessible to the members of the project with one login. (Following national and international funding policies, 2-3 years after the termination of a project, the login should be removed and data are made public available.)