IBM meilleur examen C2090-610, questions et réponses

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Code d'Examen: C2090-610
Nom d'Examen: IBM (DB2 10.1 Fundamentals)
Questions et réponses: 138 Q&As

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NO.1 Which two activities indicate the need for a data warehouse? (Choose two.)
A. Confirm product inventory.
B. Monitor product availability.
C. Summarize sales by region.
D. Identify patterns for products sold in the last five years.
E. Associate one or more products with a purchase order.
Answer: C,D

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NO.2 Which action needs to be performed in order to complete the definition of an
application-period temporal
table?
A. A transaction-start-id column must be defined for the table.
B. A history table must be defined and associated with the base table.
C. A BUSINESS_TIME period must be specified in a CREATE or ALTER of the table.
D. A unique index must be created that prevents overlapping of the BUSINESS_TIME period
of the table.
Answer: C

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NO.3 Which object is a stored procedure defined into?
A. Table
B. Schema
C. Package
D. Database
Answer: B

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NO.4 Which clause should be included in a ALTER TABLE statement to update a table
definition with a new
column?
A. ADD COLUMN
B. ALTER COLUMN
C. APPEND COLUMN
D. RENAME COLUMN
Answer: A

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NO.5 What functionality allows users to perform a UNION operation between a DB2 table
and an Oracle
view?
A. Oracle connect
B. Trusted context
C. Oracle federation
D. Distributed request
Answer: D

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NO.6 What is the primary function of an Online Transaction Processing (OLTP) workload?
A. To combine data from multiple sources.
B. To discover hidden relationships in data.
C. To analyze large amounts of data to find patterns.
D. To make changes to a small number of records within a single transaction.
Answer: D

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NO.7 If the following command is executed: CREATE DATABASE test What is the page
size (in kilobytes) of
the database?
A. 4
B. 8
C. 16
D. 32
Answer: A

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NO.8 What are two valid objects that can be created in DB2? (Choose two.)
A. Tree
B. Node
C. Trigger
D. Contexts
E. Sequence
Answer: C,E

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NO.9 Which product is used to customize execution environments for the purpose of
controlling system
resources so that one department or service class does not overwhelm the system?
A. pureScale
B. Workload manager
C. Data partitioning feature
D. Self-tuning memory manager
Answer: B

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NO.10 When is it appropriate to use a sequence?
A. When you want to control the order in which triggers are fired.
B. When you want to control the order in which stored procedures can be invoked.
C. When you want to automatically generate a numeric value that is not tied to any specific
column or
table.
D. When you want to automatically generate a numeric value for each row that is added to a
specific
table.
Answer: C

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NO.11 Which DB2 object can be used to improve the execution performance of qualified
SELECT statements?
A. Trigger
B. SQL Procedure
C. Sequence Object
D. Materialized Query Table
Answer: D

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NO.12 What type of mechanism is a simple token value that is used to refer to a much bigger
large object
(LOB)?
A. locator
B. pointer
C. address
D. reference
Answer: A

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NO.13 Which type of temporal table can be used to store only time-sensitive data?
A. Bitemporal
B. Time-period
C. System-period
D. Application-period
Answer: D

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NO.14 What type of large object (LOB) is used to store LOB data together with the formatted
rows on data
pages, instead of in a separate LOB storage object?
A. inline
B. binary
C. internal
D. partitioned
Answer: A

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NO.15 What is the purpose of the Query Tuner?
A. To automatically capture and stop rogue queries.
B. To provide recommendations and analysis for tuning a single query.
C. To provide recommendations and analysis for tuning up to 100 queries.
D. To recommend indexes and to guide DBAs through the process of creating new indexes.
Answer: B

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NO.16 When an index is created for a table, where is the metadata for that index stored?
A. In the table definition.
B. In the system catalog.
C. In the schema that the index resides in.
D. In the metadata of the table the index was created for.
Answer: B

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NO.17 Which tool allows users to connect to a DB2 database using a wizard?
A. Control Center
B. IBM Data Studio
C. Universal Connection Expert
D. DB2 Connection Pool Manager
Answer: B

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NO.18 Given the following DDL statement: CREATE TABLE sales (item CHAR(20)); If a DBA
wishes to
increase the size of the ITEM column, which SQL statement needs to be used?
A. ALTER TABLE sales ADD COLUMN item CHAR(40);
B. ALTER TABLE sales ALTER COLUMN item CHAR(40);
C. ALTER TABLE sales MODIFY COLUMN item CHAR(40);
D. ALTER TABLE sales ALTER COLUMN item SET DATA TYPE CHAR(40);
Answer: D

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NO.19 Which DB2 object is used to provide a logical grouping of other database objects?
A. Alias
B. Index
C. Schema
D. Collection
Answer: C

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NO.20 You have a business need to query DB2 10 and DB2 9 databases and you want to
write an application
that can run on most platforms unchanged. Which interface would you use to achieve your
goal?
A. CLI
B. XML
C. JDBC
D. RUBY
Answer: C

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