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1. CREATE TABLE staff_bk1 AS SELECT * FROM user12.staff where
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ssex=¡¯ÄС¯;
2. INSERT INTO staff_bk1 SELECT * FROM user12.staff where ssex=¡¯Å®¡¯;
3. CREATE TABLESPACE tabs11
DATAFILE ¡®D:\\oracle\\product\\10.1.0\\oradata\\ygbx\\ygbxfile1.dbf¡¯ SIZE 10M REUSE AUTOEXTEND ON NEXT 128K MAXSIZE 100M;
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5. ·ÖΪÒÔÏÂ3¸ö²½Ö裺 ? CREATE ROLE ygbx_role1;
? GRANT SELECT,INSERT,UPDATE,DELETE ON user12.staff TO ygbx_role1;
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6. CREATE PUBLIC SYNONYM staff_synonym FOR user12.staff; 7. c1 staff%ROWTYPE; 8. CREATE VIEW view1 AS
SELECT sno, sname, ssex, sbirthday,bno,bname FROM business,staff
WHERE business.bno=staff.bno;
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