单选题CREATE TABLE dept (deptno NUMBER(2), dname VARCNAR2(14), 1oc VARCNAR2 (13)); ROLLBACK; DESCRIBE DEPT What is true about the set? （）AThe DESCRIBE DEPT statement displays the structure of the DEPT table.BThe ROLLBACK statement frees the storage space occupies by the DEPT table.CThe DESCRIBE DEPT statement returns an error ORA-04043: object DEPT does not exist.DThe DESCRIBE DEPT statement displays the structure of the DEPT table only if there is a COMMIT statement introduced before the ROLLBACK statement.
单选题
CREATE TABLE dept (deptno NUMBER(2), dname VARCNAR2(14), 1oc VARCNAR2 (13)); ROLLBACK; DESCRIBE DEPT What is true about the set? （）
A
The DESCRIBE DEPT statement displays the structure of the DEPT table.
B
The ROLLBACK statement frees the storage space occupies by the DEPT table.
C
The DESCRIBE DEPT statement returns an error ORA-04043: object DEPT does not exist.
D
The DESCRIBE DEPT statement displays the structure of the DEPT table only if there is a COMMIT statement introduced before the ROLLBACK statement.
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Examine the structure of the EMPLOYEES table: Column name Data type Remarks EMPLOYEE_ID NUMBER NOT NULL, Primary Key LAST_NAME VARCNAR2(30) FIRST_NAME VARCNAR2(30) JOB_ID NUMBER SAL NUMBER MGR_ID NUMBER References EMPLOYEE_ID column DEPARTMENT_ID NUMBER You need to create an index called NAME_IDX on the first name and last name fields of the EMPLOYEES table. Which SQL statement would you use to perform this task? （）A、CREATE INDEX NAME _IDX (first_name, last_name);B、CREATE INDEX NAME _IDX (first_name, AND last_name)C、CREATE INDEX NAME_IDX ON (First_name, last_name);D、CREATE INDEX NAME_IDX ON employees (First_name, AND last_name);E、CREATE INDEX NAME_IDX ON employees (First_name, last_name);F、CREATE INDEX NAME_IDX FOR employees (First_name, last_name);
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Scott issues the SQL statements: CREATE TABLE dept (deptno NUMBER(2), dname VARCHAR2(14), loc VARCHAR2(13)}; GRANT SELECT ON DEPT T0 SUE; If Sue needs to select from Scott's DEPT table, which command should she use?（）A、SELECT*FROMDEPT；B、SELECT*FROMSCOTT.DEPT；C、SELECT*FROMDBASCOTTDEPT；D、SELECT*FROMALL_USERSWHEREUSER_NAME='；SCOTT'；ANDTABLENAME='；DEPT'；；
Which SQL statement defines the FOREIGN KEY constraint on the DEPTNO column of the EMP table? （）A、CREATE TABLE EMP (empno NUMBER(4), ename VARCNAR2(35), deptno NUMBER(7,2) NOT NULL CONSTRAINT emp_deptno_fk FOREIGN KEY deptno REFERENCES dept deptno);B、CREATE TABLE EMP (empno NUMBER(4), ename VARCNAR2(35), deptno NUMBER(7,2) CONSTRAINT emp_deptno_fk REFERENCES dept (deptno));C、CREATE TABLE EMP (empno NUMBER(4) ename VARCHAR2(35), deptno NUMBER(7,2) NOT NULL, CONSTRAINT emp_deptno_fk REFERENCES dept (deptno) FOREIGN KEY (deptno));D、CREATE TABLE EMP (empno NUMBER(4), ename VARCNAR2(35), deptno NUMBER(7,2) FOREIGN KEY CONSTRAINT emp deptno fk REFERENCES dept (deptno));
Which is a valid CREATE TABLE statement?（）A、CREATE TABLE EMP9$# AS (empid number(2));B、CREATE TABLE EMP*123 AS (empid number(2));C、CREATE TABLE PACKAGE AS (packid number(2));D、CREATE TABLE 1EMP_TEST AS (empid number(2));
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单选题The HR user creates a stand-alone procedure as follows and grants the EXECUTE privilege on theprocedure to many database users： CREATE OR REPLACE PROCEDURE create_dept （ v_deptno NUMBER， v_dname VARCHAR2， v_mgr NUMBER， v_loc NUMBER） BEGIN INSERT INTO hr.departments VALUES （v_deptno， v_dname， v_mgr， v_loc）； END； The users having permission to execute the procedure are able to insert records into the DEPARTMENTStable even though they do not have the INSERT privilege on the table. You want only those users whohave privileges on the DEPARTMENTS table to be able to execute the procedure successfully. What would you suggest to the PL/SQL developers to achieve this（）ACreate the procedure with definer’s right.BCreate the procedure with invoker’s right.CGrant the EXECUTE privilege with GRANT OPTION on the procedure to selected users.DCreate the procedure as part of a PL/SQL package and grant the EXECUTE privilege on the package to selected users
单选题Evaluate the set of SQL statements: CREATE TABLE dept (deptno NUMBER(2), dname VARCHAR2(14), loc VARCHAR2(13)); ROLLBACK; DESCRIBE DEPT What is true about the set?（）AThe DESCRIBE DEPT statement displays the structure of the DEPT table.BThe ROLLBACK statement frees the storage space occupied by the DEPT table.CThe DESCRIBE DEPT statement returns an error ORA-04043: object DEPT does not exist.DThe DESCRIBE DEPT statement displays the structure of the DEPT table only if there is a COMMIT statement introduced before the ROLLBACK statement.
单选题Which SQL statement defines a FOREIGN KEY constraint on the DEPTNO column of the EMP table?（）ACREATE TABLE EMP (empno NUMBER(4), ename VARCHAR2(35), deptno NUMBER(7,2) NOT NULL, CONSTRAINT emp_deptno_fk FOREIGN KEY deptno REFERENCES dept deptno);BCREATE TABLE EMP (empno NUMBER(4), ename VARCHAR2(35), deptno NUMBER(7,2) CONSTRAINT emp_deptno_fk REFERENCES dept (deptno));CCREATE TABLE EMP (empno NUMBER(4), ename VARCHAR2(35), deptno NUMBER(7,2) NOT NULL, CONSTRAINT emp_deptno_fk REFERENCES dept (deptno) FOREIGN KEY (deptno));DCREATE TABLE EMP (empno NUMBER(4), ename VARCHAR2(35), deptno NUMBER(7,2) FOREIGN KEY CONSTRAINT emp_deptno_fk REFERENCES dept (deptno));
单选题Which is a valid CREATE TABLE statement?（）ACREATE TABLE EMP9$# AS (empid number(2));BCREATE TABLE EMP*123 AS (empid number(2));CCREATE TABLE PACKAGE AS (packid number(2));DCREATE TABLE 1EMP_TEST AS (empid number(2));
单选题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？（）A Issue the ALTER TABLE SCOTT.DEPT SHRINK SPACE COMPACT； statement.B Issue the ALTER TABLE SCOTT.DEPT SHRINK SPACE； statement.C Issue the ALTER TABLE SCOTT.DEPT SHRINK SPACE CASCADE； statement.D You cannot shrink the SCOTT.EMP table.
单选题Evaluate the set of SQL statements: CREATE TABLE dept (deptno NUMBER(2), dname VARCNAR2(14), 1oc VARCNAR2 (13)); ROLLBACK; DESCRIBE DEPT What is true about the set?（）AThe DESCRIBE DEPT statement displays the structure of the DEPT table.BThe ROLLBACK statement frees the storage space occupies by the DEPT table.CThe DESCRIBE DEPT statement returns an error ORA-04043: object DEPT does not exist.DThe DESCRIBE DEPT statement displays the structure of the DEPT table only if there is a COMMIT statement introduced before the ROLLBACK statement.
单选题Which SQL statement defines the FOREIGN KEY constraint on the DEPTNO column of the EMP table?（）ACREATE TABLE EMP (empno NUMBER(4), ename VARCNAR2(35), deptno NUMBER(7,2) NOT NULL CONSTRAINT emp_deptno_fk FOREIGN KEY deptno REFERENCES dept deptno);BCREATE TABLE EMP (empno NUMBER(4), ename VARCNAR2(35), deptno NUMBER(7,2) CONSTRAINT emp_deptno_fk REFERENCES dept (deptno));CCREATE TABLE EMP (empno NUMBER(4) ename VARCHAR2(35), deptno NUMBER(7,2) NOT NULL, CONSTRAINT emp_deptno_fk REFERENCES dept (deptno) FOREIGN KEY (deptno));DCREATE TABLE EMP (empno NUMBER(4), ename VARCNAR2(35), deptno NUMBER(7,2) FOREIGN KEY CONSTRAINT emp deptno fk REFERENCES dept (deptno));
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