数据库种类有哪些各有何特点

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select * from tbl_Articles WHERE ArticleID=2801671 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=2801671 LIMIT 0,1
select * from tbl_Articles_sphinx where id=2801671 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1119956,1132415,1109973,1098434,1063055,1130752,2886313,1088670,1124043,1309042,1494417,2055882,1088678,1062870,1046963,1071197,1062582,1091411,1049816,2356555,1130386,2447077,1002750,1726200,1898176,1129045,1131323,1088668,168226,1115731) ORDER BY field (ArticleID,1119956,1132415,1109973,1098434,1063055,1130752,2886313,1088670,1124043,1309042,1494417,2055882,1088678,1062870,1046963,1071197,1062582,1091411,1049816,2356555,1130386,2447077,1002750,1726200,1898176,1129045,1131323,1088668,168226,1115731)