@techreport{weko_20661_1,
   author	 = "岩井原,瑞穂 and 上林彌彦",
   title	 = "関係データベースにおける集合制約質問",
   year 	 = "1989",
   institution	 = "九州大学工学部, 九州大学工学部",
   number	 = "4(1988-DBS-069)",
   month	 = "jan"
}