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databases Online Quiz - 197

Description: databases Online Quiz - 197
Number of Questions: 20
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Tags: databases
Attempted 0/20 Correct 0 Score 0

Which of the following tools can be used to automate table reorganization Operations ?

  1. Control Center

  2. Command Center

  3. Command Line Processor

  4. Task Center


Correct Option: D
  1. SELECT COUNT *

  2. SELECT COUNT(*)

  3. SELECT COUNT[*]

  4. SELECT COUNT(ALL)


Correct Option: B

Which authority or privilege is granted by the DB2 Database Manager configuration file?

  1. CONNECT

  2. CONTROL

  3. SYSMAINT

  4. EXECUTE


Correct Option: C

Which of the following isolation levels will lock all rows scanned to build a result data set?

  1. Uncommitted Read

  2. Cursor Stability

  3. Read Stability

  4. Repeatable Read


Correct Option: D

What is the picture clause of the null indicator variable

  1. S9 (4) COMP-3

  2. S9 (4)

  3. 9 (4)

  4. S9 (4) COMP


Correct Option: D
  1. SYNONYM

  2. ALIAS

  3. All of the above

  4. None of the above


Correct Option: A

A collection of named objects is called ______

  1. Schema

  2. Table

  3. Alias

  4. Both a & b


Correct Option: A

The maximum number of tables that can be joined is _____________

  1. 20

  2. 10

  3. 15

  4. No Limit.


Correct Option: C
  1. Joins

  2. Unions

  3. Nested SELECT

  4. All of the above


Correct Option: D

What is the restriction on using UNION in embedded SQL ?

  1. It has to be in a CURSOR

  2. cannot be used in Embedded SQL

  3. No restrictions

  4. None of the above


Correct Option: A

Which of the following is a NOT a valid reason for defining a view on a table?

  1. Restrict users' access to a subset of table data

  2. Ensure that rows inserted remain within the scope of a definition

  3. Produce an action as a result of a change to a table

  4. Provide users with an alternate view of table data


Correct Option: C

Which of the following isolation levels will lock all rows scanned to build a result data set?

  1. Uncommitted Read

  2. Cursor Stability

  3. Read Stability

  4. Repeatable Read


Correct Option: D

A declared temporary table is used for which of the following purposes?

  1. Backup purposes

  2. Storing intermediate results

  3. Staging area for load operations

  4. Sharing result data sets between applications


Correct Option: B

The identity value will be rolled back when the transaction that tried to insert the value into the table is not committed or rolled back

  1. True

  2. False


Correct Option: B

We can declare DB2 host variables in a COBOL copybook

  1. True

  2. False


Correct Option: B

Given the following table: TEMP_DATA TEMP DATE _____________ 45    12/25/2006 51    12/26/2006 67    12/27/2006 72    12/28/2006 34    12/29/2006 42    12/30/2006 And the following SQL statement: TE FUNCTION degf_to_c (temp INTEGER) RETURNS INTEGER LANGUAGE SQL CONTAINS SQL NO EXTERNAL ACTION DETERMINISTIC BEGIN ATOMIC DECLARE newtemp INTEGER; SET newtemp = temp - 32; SET newtemp = newtemp * 5; RETURN newtemp / 9; END Which two of the following SQL statements illustrate the proper way to invoke the calar function DEGF_TO_C?

  1. VALUES degf_to_c(32)

  2. SELECT date, degf_to_c(temp) AS temp_c FROM temp_data

  3. CALL degf_to_c(32)

  4. Both a and b


Correct Option: D
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