Which statement about UPDATE processing is FALSE、

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• 1A table named DEPARTMENT contains the following data:  DEPTNO     DEPTNAME          MGRNO      ADMRDEPT -----      --------          -----      -------- A01        PLANNING          000020     A00 B02        BRANCH OFFICE 1   -          E01 C22        BRANCH OFFICE 2   -          E01 D22        BRANCH OFFICE 3   -          E01 E22        BRANCH OFFICE 4   -          E01 If a user attempts to execute the following statement UPDATE employee SET workdept=   (SELECT deptno FROM department WHERE admrdept LIKE 'E%') WHERE workdept IS NULL; What will happen、

  A.The statement will fail because a subquery cannot be used in an UPDATE statement.

  B.The statement will fail because the result set produced by the subquery will contain more than one row.

  C.The statement will succeed; the last record retrieved by the subquery will be used to provide a WORKDEPT value for the update operation.

  D.The statement will succeed; the first record retrieved by the subquery will be used to provide a WORKDEPT value for the update operation.

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• 2Which statement about system-period temporal tables is true、

  A.They store user-based period information.

  B.They do not have a separate history table.

  C.They can be queried without a time period specification.

  D.They manage data based on time criteria specified by users or applications.

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• 3Which SQL statement will retrieve the department number (WORKDEPT) and average departmentalsalary (SALARY) for all departments in a table named EMPLOYEE and arrange the result set inascending order by average departmental salary、

  A.SELECT workdept, AVG(salary) FROM employee ORDER BY workdept GROUP BY 2

  B.SELECT workdept, AVG(salary) FROM employee ORDER BY workdept ARRANGE BY 2

  C.SELECT workdept, AVERAGE(salary) FROM employee GROUP BY workdept ORDER BY 2

  D.SELECT workdept, AVG(salary) FROM employee GROUP BY workdept ORDER BY 2

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• 4Which type of stored procedure is not associated with an external application program、

  A.A Java stored procedure.

  B.A REXX stored procedure.

  C.A native SQL stored procedure.

  D.An external SQL stored procedur

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• 5An SQL function named DEPT_INFO was created as follows:  CREATE FUNCTION dept_info()  RETURNS TABLE(dept_id INTEGER,dept_name VARCHAR(20))  LANGUAGE SQL  READS SQL DATA  BEGIN ATOMIC  RETURN    SELECT deptno,deptname FROM department WHERE deptname LIKE 'S%';  END What is the correct way to use this function in a query、

  A.SELECT dept_info(dept_id, dept_name)

  B.SELECT dept_id, dept_name FROM dept_info()

  C.SELECT TABLE dept_id, dept_name FROM dept_info()

  D.SELECT dept_id, dept_name FROM TABLE(dept_info()) AS results

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• 6Given the following statements:  CREATE TABLE employee(empid INTEGER,info XML); INSERT INTO employee VALUES(1, '<employeesinfo>    <name>Joe Smith</name>    <department name="DB2">     <team>Development</team>    </department>  </employeeinfo>'); If the following XQuery statement is executed:  XQUERY  for $info in deb2-fn:xmlcolumn('EMPLOYEE.INFO')/employeeinfo  return $info/name What will be the result、

  A.Joe Smith

  B.Joe Smith

  C.Joe Smith>DB2

  D.Joe Smith

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• 7A table named STATES has the following columns: STATE_CD, REGION_CD, and STATE_NAME.Which SQL statement will return the number of states in each region, ordered by number of states、

  A.SELECT state_cd, COUNT(*) FROM states ORDER BY COUNT(*);

  B.SELECT state_cd, COUNT(*) FROM states GROUP BY state_cd ORDER BY state_cd;

  C.SELECT region_cd, COUNT(*) FROM states GROUP BY state_cd ORDER BY COUNT(*);

  D.SELECT region_cd, COUNT(*) FROM states GROUP BY region_cd ORDER BY COUNT(*);

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• 8When a user-defined function (UDF) is created and no schema is specified, what schema is used to store the UDF、

  A.The SYSIBM schema.

  B.The SYSFUN schema.

  C.A schema with the name of the UDF.

  D.A schema with the userid of the UDF definer.

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• 9What is a function of a table check constraint、

  A.To provide a method of avoiding duplicate entries for a column.

  B.To provide a method of ensuring a column's values are within a specific range.

  C.To ensure that XML columns are properly populated in an associated XML table space.

  D.To enforce relationships between tables by checking the existence of rows in one table against another.

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• 10Which statement about foreign keys is true、

  A.A table can have only one foreign key.

  B.Foreign keys can only be defined when a table is created.

  C.A foreign key can be defined on a column or a set of columns in a table.

  D.C. A foreign key can be defined on a column or a set of columns in a tabl

  E.D. Foreign keys are enforced only during the execution of INSERT statements.

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