On Monday, you dropped the DEPT table from your schema and then you re-created the DEPT table in your schema. On Wednesday, you have a requirement to restore the DEPT table from the recycle bin. Which statement is correct?()
On Monday, you dropped the DEPT table from your schema and then you re-created the DEPT table in your schema. On Wednesday, you have a requirement to restore the DEPT table from the recycle bin. Which statement is correct?()
CREATE TABLE dept (deptno NUMBER(2), dname VARCNAR2(14), 1oc VARCNAR2 (13)); ROLLBACK; DESCRIBE DEPT What is true about the set? ()
You created the DEPT table by using the following command: CREATE TABLE scott.dept (deptno NUMBER(3), dname VARCHAR2(15), loc VARCHAR2(15) ) STORAGE (INITIAL 100K NEXT 50K MAXEXTENTS 10 PCTINCREASE 5 FREELIST GROUPS 6 FREELISTS 4);You are required to shrink the DEPT table. While performing the shrink operation, you want to ensure that the recovered space is returned to the tablespace in which the DEPT table is stored. You do not want to shrink the indexes created on the DEPT table. What will you do to shrink the SCOTT.EMP table?()
On Monday, you dropped the DEPT table from your schema and then you re/x7fcreated the DEPT table in your schema. On Wednesday, you have a requirement to restore the DEPT table from the recycle bin. Which statement is correct?()
有这样的三个表即学生表S,课程表C和学生选课表SC,他们的结果如下: 其中:S#为学号,SN为姓名,SEX为性别,AGE为年龄,DEPT为系别,C#为课程号,CN为课程名,GRADE为成绩。 检索所有比“王华”年龄大的学生姓名、年龄和性别。正确的SELECT语句是()
有这样的三个表即学生表S,课程表C和学生选课表SC,他们的结果如下: 其中:S#为学号,SN为姓名,SEX为性别,AGE为年龄,DEPT为系别,C#为课程号,CN为课程名,GRADE为成绩。 检索选修四门以上课程的学生总成绩(不统计不及格的课程),并要求按总成绩的降序排列出来。正确的SELECT的语句是()
有这样的三个表即学生表S,课程表C和学生选课表SC,他们的结果如下: 其中:S#为学号,SN为姓名,SEX为性别,AGE为年龄,DEPT为系别,C#为课程号,CN为课程名,GRADE为成绩。 检索学生姓名及其所选修课程的课程号和成绩。正确的SELECT的语句是()
有这样的三个表即学生表S,课程表C和学生选课表SC,他们的结果如下: 其中:S#为学号,SN为姓名,SEX为性别,AGE为年龄,DEPT为系别,C#为课程号,CN为课程名,GRADE为成绩。 检索选修课程“C2”的学生中成绩最高的学生的学号。正确的SELECT的语句是()
STUDENT和DEPT两个关系如下表所示,其中STUDENT关系中的主码为学号,年龄在18~25之间,DEPT关系的主码为系号。向STUDENT中插入行(507,’王方’,17,’D4’),该操作()