In order to get a good overview of the state of your database sometimes it is convenient to know which tables contain the most data rows. The following query shows you the row count for all your database tables. You can run it in MSSQL Management Studio or directly from your DNN site from Host > SQL.
SELECT o.name, ddps.row_count
FROM sys.indexes AS i INNER JOIN
sys.objects AS o ON i.object_id = o.object_id INNER JOIN
sys.dm_db_partition_stats AS ddps ON i.object_id = ddps.object_id AND i.index_id = ddps.index_id
WHERE (i.index_id < 2) AND (o.is_ms_shipped = 0)
ORDER BY ddps.row_count DESC