问题:单选题Which of the following describes how DB2 9 stores an XML document if the XML Extender is not used?()A CLOBB BLOBC HierarchicallyD Rows and columns...
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问题:单选题A user invoking a user-defined function requires which DB2 privilege?()A CALLB USAGEC EXECUTED REFERENCES...
问题:单选题Which of the following describes the objects of a DB2 database and their relationships?()A InstanceB Table spaceC System catalogD Schema repository...
问题:单选题Which of the following statements is used to revoke all DML privileges on table EMPLOYEE from user TOM?()A REVOKE ALL PRIVILEGES FROM USER tomB REVOKE ALL ON EMPLOYEE FROM USER tomC REVOKE EXECUTE ON EMPLOYEE FROM USER tomD REVOKE PRIVILEGES ON EMPLOYE...
问题:单选题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 t2B SELECT ...
问题:单选题The following statements: CREATE TABLE t1 (col1 INT NOT NULL, PRIMARY KEY(col1)); CREATE TABLE t2 (col1 INT NOT NULL, col2 CHAR(1) NOT NULL, PRIMARY KEY (col1, col2), FOREIGN KEY (col1) REFERENCES t1 (col1) ON DELETE CASCADE ON UPDATE RESTRICT); CREATE...
问题:单选题Which of the following supports the XML data type?()A A unique indexB A composite indexC A check constraintD A generated column...
问题:单选题Given the following table definitions: EMPLOYEE ID NAME DEPTID 01Smith 10 02Bossy 20 03 20 Peterson 04Goss 30 05Pape 40 06Avery 50 07O'Neal 60 08Carter 50 DEPARTMENT ID DEPTNAME 05 Hardware 10 Kitchen 20 Shoes 30 Toys 40 Electronics 50 Automotive and t...
问题:单选题A table was created using the following DDL: CREATE TABLE employee (id SMALLINT NOT NULL, name VARCHAR(9), dept SMALLINT CHECK (dept BETWEEN 10 AND 100), job CHAR(10) CHECK (job IN ('Sales','Mgr','Clerk')), hiredate DATE, salary DECIMAL(7,2), comm DECI...
问题:单选题Given the following function: CREATE FUNCTION emplist ( ) RETURNS TABLE ( id CHAR(6) , firstname VARCHAR(12) , lastname VARCHAR(15) ) LANGUAGE SQL BEGIN ATOMIC RETURN SELECT EMPNO, FIRSTNME, LASTNAME FROM EMPLOYEE WHERE WORKDEPT IN ('A00', 'B00'); END ...
问题:单选题Given that tables T1 and T2 contain the following rows: Table T1: C1 C2 5 4 5 2 5 5 Table T2: C1 C2 5 1 5 2 5 3 Which of the following queries will return only those rows that exist in T1 and not in T2?()A SELECT * FROM T1 MINUS SELECT * FROM T2B SELEC...
问题: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 statemen...
问题:单选题Which of the following scenarios will ensure that the value of the NEXT_STEPNO column in a given row of table TABLEX exists as a value of column STEPNO (usually in another row) in the same table?()A Define a UNIQUE constraint on the columns NEXT_STEPNO...
问题:单选题An Alias can be an alternate name for which DB2 object?()A SequenceB TriggerC SchemaD View...
问题:单选题To which of the following resources can a lock be applied?()A RowB AliasC BitmapD Column...
问题:单选题Which of the following can be used to ensure that once a row has been inserted in table TABLEX, the column MAINID in that row cannot be updated?()A Define the column MAINID as NOT UPDATABLEB Define the column MAINID as a PRIMARY KEYC Define the column ...
问题:单选题A DBA has been asked to create a table which will contain a substantial amount of detailed sales information for each calendar month and maintain it to contain only the last 12 months. Which of the following methods will facilitate the online removal o...
问题:单选题A UDT is a data type which:()A must contain unique values.B cannot be CAST to other data types.C is created using the CREATE DISTINCT command.D contains a value that was automatically calculated from values in other columns....
问题:单选题Which of the following is the lowest cost DB2 product that can be legally installed on an AIX server?()A DB2 Express EditionB DB2 Personal EditionC DB2 Workgroup Server EditionD DB2 Enterprise Server Edition...