The database contents versions are useful to know for making decisions about upgrading the DB. This information is available in cur_state table. It may be obtained via the following query using pgAdmin for example:
select * from cur_state;
As a result you will get the following data columns:
schema_version — the current version of data structure;
script_timestamp — the edition of the stored procedures;
api_version — the Cerebro client application version. Note that newer client applications may require to upgrade a database for proper functioning.