select * from eav_entity_attribute where attribute_id = 51;
+---------------------+----------------+------------------+--------------------+--------------+------------+
| entity_attribute_id | entity_type_id | attribute_set_id | attribute_group_id | attribute_id | sort_order |
+---------------------+----------------+------------------+--------------------+--------------+------------+
|                  51 |              3 |                3 |                 11 |           51 |         20 |
+---------------------+----------------+------------------+--------------------+--------------+------------+

      Table: eav_entity_attribute
Create Table: CREATE TABLE `eav_entity_attribute` (
  `entity_attribute_id` int(10) unsigned NOT NULL AUTO_INCREMENT COMMENT 'Entity Attribute Id',
  `entity_type_id` smallint(5) unsigned NOT NULL DEFAULT '0' COMMENT 'Entity Type Id',
  `attribute_set_id` smallint(5) unsigned NOT NULL DEFAULT '0' COMMENT 'Attribute Set Id',
  `attribute_group_id` smallint(5) unsigned NOT NULL DEFAULT '0' COMMENT 'Attribute Group Id',
  `attribute_id` smallint(5) unsigned NOT NULL DEFAULT '0' COMMENT 'Attribute Id',
  `sort_order` smallint(6) NOT NULL DEFAULT '0' COMMENT 'Sort Order',
  PRIMARY KEY (`entity_attribute_id`),
  UNIQUE KEY `UNQ_EAV_ENTITY_ATTRIBUTE_ATTRIBUTE_SET_ID_ATTRIBUTE_ID` (`attribute_set_id`,`attribute_id`),
  UNIQUE KEY `UNQ_EAV_ENTITY_ATTRIBUTE_ATTRIBUTE_GROUP_ID_ATTRIBUTE_ID` (`attribute_group_id`,`attribute_id`),
  KEY `IDX_EAV_ENTITY_ATTRIBUTE_ATTRIBUTE_SET_ID_SORT_ORDER` (`attribute_set_id`,`sort_order`),
  KEY `IDX_EAV_ENTITY_ATTRIBUTE_ATTRIBUTE_ID` (`attribute_id`),
  CONSTRAINT `FK_EAV_ENTITY_ATTRIBUTE_ATTRIBUTE_ID_EAV_ATTRIBUTE_ATTRIBUTE_ID` FOREIGN KEY (`attribute_id`) REFERENCES `eav_attribute` (`attribute_id`) ON DELETE CASCADE ON UPDATE CASCADE,
  CONSTRAINT `FK_EAV_ENTT_ATTR_ATTR_GROUP_ID_EAV_ATTR_GROUP_ATTR_GROUP_ID` FOREIGN KEY (`attribute_group_id`) REFERENCES `eav_attribute_group` (`attribute_group_id`) ON DELETE CASCADE ON UPDATE CASCADE
) ENGINE=InnoDB AUTO_INCREMENT=343 DEFAULT CHARSET=utf8 COMMENT='Eav Entity Attributes'
1 row in set (0.00 sec)