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单选题
Given the following two tables: TAB1 R1 A A A B B C C D E TAB2 R2 A A B B C C D Which of the following queries returns the following result set? RETVAL E（）
A
SELECT r1 AS retval FROM tab1 INTERSECT SELECT r2 AS retval FROM tab2
B
SELECT r1 AS retval FROM tab1 EXCEPT SELECT r2 AS retval FROM tab2
C
SELECT DISTINCT r1 AS retval FROM tab1, tab2 WHERE r1 <> r2
D
SELECT r1 AS retval FROM tab1 UNION SELECT r2 AS retval FROM tab2
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更多 “单选题Given the following two tables: TAB1 R1 A A A B B C C D E TAB2 R2 A A B B C C D Which of the following queries returns the following result set? RETVAL E（）A SELECT r1 AS retval FROM tab1 INTERSECT SELECT r2 AS retval FROM tab2B SELECT r1 AS retval FROM tab1 EXCEPT SELECT r2 AS retval FROM tab2C SELECT DISTINCT r1 AS retval FROM tab1, tab2 WHERE r1 r2D SELECT r1 AS retval FROM tab1 UNION SELECT r2 AS retval FROM tab2” 相关考题
考题
What is true about joining tables through an equijoin? ()
A. You can join a maximum of two tables through an equijoin.B. You can join a maximum of two columns through an equijoin.C. You specify an equijoin condition in the SELECT or FROM clauses of a SELECT statement.D. To join two tables through an equijoin, the columns in the join condition must be primary key and foreign key columns.E. You can join n tables (all having single column primary keys) in a SQL statement by specifying a minimum of n-1 join conditions.
考题
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 appgrpB.GRANT INSERT TO USER tom, GROUP appgrp ON TABLE tab1C.GRANT INSERT ON TABLE tab1 TO USER tom, GROUP appgrpD.GRANT ADD DATA ON TABLE tab1 TO USER appgrp, GROUP tom
考题
Given the following statements:CREATE TABLE tab1 (col1 INT); CREATE TABLE tab2 (col1 INT); CREATE TRIGGER trig1 AFTER UPDATE ON tab1 REFERENCING NEW AS new1 FOR EACH ROW MODE DB2SQL INSERT INTO tab2 VALUES(new1.col1); INSERT INTO tab1 VALUES(2),(3);What is the result of the following query? SELECT count(*) FROM tab2;（）A.3B.2C.1D.0
考题
Given the following two tables:TAB1 C1 C21 Antarctica 2 Africa 3 Asia 4 Australia TAB2 CX CY5 Europe 6 North America 7 South AmericaWhich of the following SQL statements will insert all rows found in table TAB2 into table TAB1?（）A.INSERT INTO tab1 SELECT cx, cy FROM tab2B.INSERT INTO tab1 VALUES (tab2.cx, tab2.cy)C.INSERT INTO tab1 VALUES (SELECT cx, cy FROM tab2)D.INSERT INTO tab1 (c1, c2) VALUES (SELECT cx, cy FROM tab2)
考题
Given the following tables: CONTINENTS ID NAME COUNTRIES1 Antarctica 02 Africa 533 Asia 474 Australia 145 Europe 436 North America 237 South America 12REGION ID LOCATION 1 East 2 WestHow many rows would be returned using the following statement? SELECT location FROM continents, region（）A.2B.7C.9D.14
考题
In which of the following situations should correlation names be used?()
A.A table referenced in the FROM clause has no indexed column.B.The table referenced in the FROM clause has more than 200 columns.C.Two or more tables in the FROM clause have identical column names.D.The FROM clause contains two or more tables in the SELECT statement.
考题
Router R1 learns two routes with BGP for prefix 200.1.0.0/16. Comparing the two routes, route 1 has a shorter AS_Path Length, smaller MED, the same Weight, and smaller Local PreferencE. Which of the following is true about Router R1's choice of best path for this prefix?（）A、Route 1 is the best route.B、Route 2 is the best route.C、The routes tie as best, but one will be picked to be placed in the routing table based on tiebreakers .D、Neither route is considered best.
考题
In which of the following situations should correlation names be used?（）A、A table referenced in the FROM clause has no indexed column.B、The table referenced in the FROM clause has more than 200 columns.C、Two or more tables in the FROM clause have identical column names.D、The FROM clause contains two or more tables in the SELECT statement.
考题
What are two reasons to create synonyms?（）A、You have too many tables.B、Your tables are too long.C、Your tables have difficult names.D、You want to work on your own tables.E、You want to use another schema's tables.F、You have too many columns in your tables.
考题
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 appgrpB、GRANT INSERT TO USER tom, GROUP appgrp ON TABLE tab1C、GRANT INSERT ON TABLE tab1 TO USER tom, GROUP appgrpD、GRANT ADD DATA ON TABLE tab1 TO USER appgrp, GROUP tom
考题
Which of the following RAID levels would be appropriate given two drives and a need for fault tolerance？（）A、RAID 0B、RAID 1C、RAID 5D、RAID 10
考题
Given the following tables: CONTINENTS ID NAME COUNTRIES 1 Antarctica 0 2 Africa 53 3 Asia 47 4 Australia 14 5 Europe 43 6 North America 23 7 South America 12 REGION ID LOCATION 1 East 2 West How many rows would be returned using the following statement? SELECT location FROM continents, region（）A、2B、7C、9D、14
考题
Which of the following statements is used to prevent user TOM from adding and deleting data in table TAB1?（）A、REVOKE ADD, DELETE FROM USER tom ON TABLE tab1B、REVOKE ADD, DELETE ON TABLE tab1 FROM USER tomC、REVOKE INSERT, DELETE FROM USER tom ON TABLE tab1D、REVOKE INSERT, DELETE ON TABLE tab1 FROM USER tom
考题
Given the following two tables: TAB1 R1 A A A B B C C D E TAB2 R2 A A B B C C D Which of the following queries returns the following result set? RETVAL E（）A、SELECT r1 AS retval FROM tab1 INTERSECT SELECT r2 AS retval FROM tab2B、SELECT r1 AS retval FROM tab1 EXCEPT SELECT r2 AS retval FROM tab2C、SELECT DISTINCT r1 AS retval FROM tab1, tab2 WHERE r1 r2D、SELECT r1 AS retval FROM tab1 UNION SELECT r2 AS retval FROM tab2
考题
Given the following statements: CREATE TABLE tab1 (col1 INT); CREATE TABLE tab2 (col1 INT); CREATE TRIGGER trig1 AFTER UPDATE ON tab1 REFERENCING NEW AS new1 FOR EACH ROW MODE DB2SQL INSERT INTO tab2 VALUES(new1.col1); INSERT INTO tab1 VALUES(2),(3); What is the result of the following query? SELECT count(*) FROM tab2;（）A、3B、2C、1D、0
考题
Given the following two tables: TAB1 C1 C2 A 11 B 12 C 13 TAB2 CX CY A 21 C 22 D 23 The following results are desired: C1 C2 CX CY A 11 A 21 C 13 C 22 -- --D 23 Which of the following queries will yield the desired results?（）A、SELECT * FROM tab1 INNER JOIN tab2 ON c1=cxB、SELECT * FROM tab1 LEFT OUTER JOIN tab2 ON c1=cxC、SELECT * FROM tab1 FULL OUTER JOIN tab2 ON c1=cxD、SELECT * FROM tab1 RIGHT OUTER JOIN tab2 ON c1=cx
考题
Given the following two AS path regular expressions: "65000+ (65001|65002)" "65000(65001|65002){0,}" Which AS path matches both regular expressions?（）A、65000 65001 65002B、65000 65002C、65001 65000D、65001 65002
考题
A bitmap join index is defined as（）.A、An index used to join two bitmap indexes on a table.B、A bitmap index created for the join of two or more tables.C、A bitmap index created on the join of two or more indexes.D、A bitmap index created on the join of two or more indexed-organized tables.
考题
Which two are true regarding external tables？ （）A、External tables can be updated. B、External tables are read-only tables. C、Indexes can be created on external tables. D、Indexes cannot be created on external tables.
考题
What is true about joining tables through an equijoin?（）A、You can join a maximum of two tables through an equijoin.B、You can join a maximum of two columns through an equijoin.C、You specify an equijoin condition in the SELECT or FROM clauses of a SELECT statement.D、To join two tables through an equijoin, the columns in the join condition must be primary key and foreign key columns.E、You can join n tables (all having single column primary keys) in a SQL statement by specifying a minimum of n-1 join conditions.
考题
单选题Given the following two tables: TAB1 R1 A A A B B C C D E TAB2 R2 A A B B C C D Which of the following queries returns the following result set? RETVAL E（）A
SELECT r1 AS retval FROM tab1 INTERSECT SELECT r2 AS retval FROM tab2B
SELECT r1 AS retval FROM tab1 EXCEPT SELECT r2 AS retval FROM tab2C
SELECT DISTINCT r1 AS retval FROM tab1, tab2 WHERE r1 r2D
SELECT r1 AS retval FROM tab1 UNION SELECT r2 AS retval FROM tab2
考题
单选题Which of the following RAID levels would be appropriate given two drives and a need for fault tolerance？（）A
RAID 0B
RAID 1C
RAID 5D
RAID 10
考题
单选题You design a Business Intelligence （BI） solution by using SQL Server 2008. You plan to create a SQL Server 2008 Reporting Services （SSRS） solution. Developers generate random reports against a data source that contains 200 tables. Power users generate random reports against four of the 200 tables. You need to design a strategy for the SSRS solution to meet the following requirements： ·Uses minimum amount of development effort. ·Provides two sets of tables in SSRS to the developers group and the power users group. Which strategy should you use？（）A
Create two Report Builder models.Include the four frequently used tables in the first model and all the tables in the second model.B
Create a Report Builder model by using all the tables.Create a perspective within the model to use only the four frequently used tables.C
Create a Report Builder model by using all the tables. Create two folders.Place the four frequently used tables in the first folder and the remaining tables in the second folder.D
Create two Data Source Views.Include all the tables in one Data Source View and the four frequently used tables in the other Data Source View.Create two Report Builder models so that each model uses one of the Data Source Views.
考题
单选题Which two terms can best describe the following pairs of words: table—tables, day + break—daybreak.A
inflection and compoundB
compound and derivationC
inflection and derivation
考题
单选题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 appgrpB
GRANT INSERT TO USER tom, GROUP appgrp ON TABLE tab1C
GRANT INSERT ON TABLE tab1 TO USER tom, GROUP appgrpD
GRANT ADD DATA ON TABLE tab1 TO USER appgrp, GROUP tom
考题
单选题Given the following tables: CONTINENTS ID NAME COUNTRIES 1 Antarctica 0 2 Africa 53 3 Asia 47 4 Australia 14 5 Europe 43 6 North America 23 7 South America 12 REGION ID LOCATION 1 East 2 West How many rows would be returned using the following statement? SELECT location FROM continents, region（）A
2B
7C
9D
14
考题
单选题Given the following two tables: TAB1 C1 C2 1 Antarctica 2 Africa 3 Asia 4 Australia TAB2 CX CY 5 Europe 6 North America 7 South America Which of the following SQL statements will insert all rows found in table TAB2 into table TAB1?（）A
INSERT INTO tab1 SELECT cx, cy FROM tab2B
INSERT INTO tab1 VALUES (tab2.cx, tab2.cy)C
INSERT INTO tab1 VALUES (SELECT cx, cy FROM tab2)D
INSERT INTO tab1 (c1, c2) VALUES (SELECT cx, cy FROM tab2)
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