+--
+-- TABLE arrived-activity
+--
+CREATE TABLE IF NOT EXISTS `arrived-activity` (
+ `object-id` varbinary(383) NOT NULL COMMENT 'object id of the incoming activity',
+ `received` datetime COMMENT 'Receiving date',
+ PRIMARY KEY(`object-id`)
+) ENGINE=MEMORY DEFAULT COLLATE utf8mb4_general_ci COMMENT='Id of arrived activities';
+
+--
+-- TABLE fetched-activity
+--
+CREATE TABLE IF NOT EXISTS `fetched-activity` (
+ `object-id` varbinary(383) NOT NULL COMMENT 'object id of fetched activity',
+ `received` datetime COMMENT 'Receiving date',
+ PRIMARY KEY(`object-id`)
+) ENGINE=MEMORY DEFAULT COLLATE utf8mb4_general_ci COMMENT='Id of fetched activities';
+