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????2???????й??????????????????????????Ч??(??????????) 1
??????????????????????80
???????????????100
????????????????????100000
???????????????????50
????3??EJB???????????????????(??????????) 1
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????6??????????????SQL???
????CREATE TABLE dept (deptno NUMBER(2)?? dname VARCNAR2(14)?? 1oc VARCNAR2 (13)); ROLLBACK; DESCRIBE DEPT
?????????????????????????????????(??????????) 3
????DESCRIBE DEPT??佫???????????ORA-04043: object DEPT does not exist.
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????DESCRIBE DEPT??佫?????ROLLBACK?????????COMMIT????????????DEPT????????????
????7??Oracle??VARCHAR2???????????(??????????) 1
????4000
????3000
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????10??????sleep() ?? wait() ?????????????????(??????????) 2
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2023/3/23 14:23:39???д?ò??????????
2023/3/22 16:17:39????????????????????Щ??
2022/6/14 16:14:27??????????????????????????
2021/10/18 15:37:44???????????????
2021/9/17 15:19:29???·???????·
2021/9/14 15:42:25?????????????
2021/5/28 17:25:47??????APP??????????
2021/5/8 17:01:11