Extension:EntitySchema/entityschema_id_counter table

mysql> describe entityschema_id_counter;
+----------+------------------+------+-----+---------+-------+
| Field    | Type             | Null | Key | Default | Extra |
+----------+------------------+------+-----+---------+-------+
| id_value | int(10) unsigned | NO   |     | NULL    |       |
+----------+------------------+------+-----+---------+-------+