create 'Student', ' S_No ','S_Name', ’S_Sex’,'S_Age'
put 'Student','s001','S_No','2015001'
put 'Student','s001','S_Name','Zhangsan'
put 'Student','s001','S_Sex','male'
put 'Student','s001','S_Age','23'
put 'Student','s002','S_No','2015003'
put 'Student','s002','S_Name','Mary'
put 'Student','s002','S_Sex','female'
put 'Student','s002','S_Age','22'
put 'Student','s003','S_No','2015003'
put 'Student','s003','S_Name','Lisi'
put 'Student','s003','S_Sex','male'
put 'Student','s003','S_Age','24'
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list
scan 'Student'
alter 'Student','NAME'=>'course'
put 'Student','s003','course:Math','85'
dorp 'Student','course'
count 's1'
count 'Student'
truncate 's1'
truncate 'Student'