下列对集中式数据库系统描述不正确的是 。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30253' and id < 2447378 and id<>'2447378' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30253' and id > 2447378 and id<>'2447378' order by id asc limit 5