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exp rbt/rbt@ora10 file=c:\db.dmp full=y °´EnterÖ´ÐÐ
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imp help=y ²é¿´°ïÖú
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imp kxself2/kxself2@ora10  full=y  file=c:\db.dmp
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Imp username/password file=file.dmp fromuser=user1 touser=user2 full=y
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create table tree_table 
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orderNumber number,
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order siblings by orderNumber  ......
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