数据库里面实体的定义是什么

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select * from tbl_Articles WHERE ArticleID=3382390 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=3382390 LIMIT 0,1
select * from tbl_Articles_sphinx where id=3382390 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(606510,1100961,491956,524411,1102787,1117834,602427,550023,414364,1106148,358369,1106244,454198,1093402,1097837,405372,3518099,1095604,1107679,1095638,1103406,1100589,477119,1116031,1110610,1118178,480553,593936,2824106,570568) ORDER BY field (ArticleID,606510,1100961,491956,524411,1102787,1117834,602427,550023,414364,1106148,358369,1106244,454198,1093402,1097837,405372,3518099,1095604,1107679,1095638,1103406,1100589,477119,1116031,1110610,1118178,480553,593936,2824106,570568)