Which of the following will begin a ne...

单项选择题Which of the following will begin a new unit of work?（）

A.The CONNECT statement
B.The first FETCH of a cursor
C.The BEGIN TRANSACTION statement
D.The first executable SQL statement

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1.单项选择题 Given that tables T1 and T2 contain the following rows:
Table T1: C1 C2 1 4 1 3 1 2
Table T2: C1 C2 1 1 1 2 1 3
Which of the following queries will return only those rows that exist in both T1 and T2?（）

A.SELECT * FROM t1 UNION SELECT * FROM t2
B.SELECT * FROM t1 UNION DISTINCT SELECT * FROM t2
C.SELECT * FROM t1 INTERSECT SELECT * FROM t2
D.SELECT * FROM t1 WHERE (c1,c2)= (SELECT c1,c2 FROM t2)

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2.单项选择题Which kind of non-sourced UDF can be created so that it only returns a single value?（）

A.Row
B.Table
C.Scalar
D.Column

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3.单项选择题Given the following stored procedure:CREATE PROCEDURE increase_salary ( IN p_workdept CHAR(6), OUT p_sum DECIMAL(9,2) ) SET p_sum = (SELECT SUM(salary) FROM employee WHERE workdept=p_workdept);How can this stored procedure be called from the Command Line Processor?（）

A.CALL increase_salary('A00')
B.VALUES increase_salary('A00')
C.CALL increase_salary('A00', ?)
D.VALUES increase_salary('A00', ?)

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4.单项选择题 The opening of cursor CSR01 produces the following result set:
STUDENT LASTNM FIRSTNM CLASSNO 123 Brown John T100 213 Bailey James
T100 312 Carter Arlene T210 465 Chas Devon T305 546 Davis Steven T405
If this Fetch statement is executed: FETCH csr01 INTO :studnum, :firstname, :lastname, :class Which of the following DELETE statements will cause this row to be deleted?（）

A.DELETE ALL FROM tab01 FOR CURRENT OF csr01
B.DELETE FROM tab01 FOR CURRENT csr01 WITH RS
C.DELETE * FROM tab01 WHERE CURRENT csr01 WITH CS
D.DELETE FROM tab01 WHERE CURRENT OF csr01 WITH RR

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5.单项选择题Which of the following statements allows USER1 to take away read access on the table ORG.TAB1 from USER2?（）

A.REVOKE SELECT FROM user2 ON TABLE org.tab1
B.REVOKE SELECT ON TABLE org.tab1 FROM user2
C.REVOKE READ ACCESS FROM user2 ON TABLE org.tab1
D.REVOKE READ ACCESS ON TABLE org.tab1 FROM user2

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6.单项选择题On which of the following database objects may the SELECT privilege be controlled?（）

A.Sequence
B.Schema
C.Group
D.View

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7.单项选择题A "trusted" client needs to communicate with a server that has been configured to use CLIENT authentication. Which of the following will be used to verify passwords?（）

A.User ID/password file
B.Communications layer
C.Client applications
D.Operating system

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8.单项选择题Which of the following statements is used to grant user TOM and Application team APPGRP the ability to add data to table TAB1?（）

A.GRANT ADD DATA ON TABLE tab1 TO GROUP tom appgrp
B.GRANT INSERT TO USER tom, GROUP appgrp ON TABLE tab1
C.GRANT INSERT ON TABLE tab1 TO USER tom, GROUP appgrp
D.GRANT ADD DATA ON TABLE tab1 TO USER appgrp, GROUP tom

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9.单项选择题A user needs to create a trigger that will update table T2 whenever a row is added to table T1. Assuming the user has all appropriate privileges for table T2, which privilege is required on table T1 to create the trigger?（）

A.REFERENCES
B.SELECT
C.UPDATE
D.ALTER

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10.单项选择题Assuming PUBLIC has been granted all privileges on table T1, which of the following statements would continue to permit any user to add rows to table T1, but not remove them?（）

A.REVOKE DROP ON t1 FROM PUBLIC
B.REVOKE UPDATE ON t1 FROM PUBLIC
C.REVOKE DELETE ON t1 FROM PUBLIC
D.REVOKE CONTROL ON t1 FROM PUBLIC

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