Hi Marcio,
Welcome to the SEBLOD forums.
At its core, SEBLOD is more than just a CCK, it is
an App developer. Apps are portable and
reusable packages which can be installed on other websites.
To get started, check out the manuals section and go through the documentation and videos.
All of the tables related to SEBLOD have the _cck_ prefix. The number of tables my vary depending on the App/and or the number of Apps you have installed. If you use a tool like phpMyAdmin, the _core_types table lists the Content Types in which you can get the ID of the Content Type. Then in the _core_type_field table, searching for the typeid will list the fields corresponding to that Content Type. For each field ID you can search the cck_core_fields table find the information for each field.
Hope that helps,
Randy