标题：[求助]database不支持动态数据库文件？

以下内容为程序代码:

1 runmode:1;
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3 dbfilepath:='e:\Trade.mdb';
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5 cnstring:='provider=microsoft.jet.oledb.4.0;data source='+dbfilepath;
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7 database(cnstring);
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9 sql1:='create table tradedetail(opendate datetime,'+'contractname varchar,'+'opentime datetime,'+'openprice real,'+'tradetype varchar,'+'closetime datetime,'+
10              'closeprice real,'+'winlosspoint int,'+'lots int,'+'commissions real,'+'closewinloss real,'+'asset real,'+'strategy varchar)';        
11 dbexecute(sql1);
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