专业技术初级资格程序员基础知识DB2

试卷预览

• 81Which SQL statement will create a DB2 object that can be used to store numerical data as Canadian currency、

  A.CREATE DISTINCT ALIAS canadian_dollar AS DECIMAL (9,3) WITH COMPARISONS

  B.CREATE DISTINCT TYPE canadian_dollar AS DECIMAL (9,3) WITH COMPARISONS

  C.CREATE DISTINCT PROCEDURE canadian_dollar AS DECIMAL (9,3) WITH COMPARISONS

  D.CREATE DISTINCT FUNCTION canadian_dollar AS DECIMAL (9,3) WITH COMPARISONS

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• 82Which object can be enabled for compression、

  A.View

  B.Buffer pool

  C.Storage group

  D.Temporary table

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• 83What is the minimum product required for DB2 connectivity across all platforms、

  A.DB2 Personal Edition

  B.DB2 Development Edition

  C.DB2 Connect Personal Edition

  D.DB2 Development Unlimited Edition

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• 84Given the SQL statement: CREATE ALIAS total_sales FOR sales Which statement is valid、

  A.SALES can be the name of a schema.

  B.SALES can be the name of a package.

  C.SALES can be the name of an existing alias.

  D.SALES can be the name of a declared global temporary tabl

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• 85Which DB2 object limits the user's ability to retrieve data from a table by defining a SQL statement in the object、

  A.View

  B.Index

  C.Trigger

  D.Check constraint

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• 86A table named EMPLOYEES was created as follows:  CREATE TABLE employees(   emp_no       VARCHAR(4)  NOT NULL,   emp_name     VARCHAR(50) NOT NULL,   emp_email    VARCHAR(30) NOT NULL) Then,the following INSERT statements were executed:   INSERT INTO employees VALUES ('1A2B','Joe Smith','joe.smith@abc.com');   INSERT INTO employees VALUES ('1122','Lisa Carter','');   INSERT INTO employees VALUES ('1A2B','John Doe','john.doe@abc.com'); If the following query is executed:   SELECT count(*) FROM employees; What will be the results、

  A.0

  B.1

  C.2

  D.3

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• 87Which two DB2 objects can a view be derived from、 (Choose two.)

  A.View

  B.Index

  C.Table

  D.Trigger

  E.Procedure

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• 88Which protocol provides applications the ability to connect to and update multiple DB2 databases within the same transaction、

  A.Type-1 connect

  B.Type-2 connect

  C.Type-3 connect

  D.Type-4 connect

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• 89Which statement about bitemporal tables is valid、

  A.Bitemporal tables are system tables and can only be queried by the schema owner.

  B.Creating a bitemporal table is similar to creating a regular table except users must specify a system time period column.

  C.When data in a bitemporal table is updated, a row is added to it's associated history table.

  D.Querying a bitemporal table will produce results for a complete timeline; a view must be created to obtain results for a specific time period.

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• 90Which object can a buffer pool be assigned to、

  A.Schema

  B.Table space

  C.Storage group

  D.Stored procedure

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