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databases Online Quiz - 199

Description: databases Online Quiz - 199
Number of Questions: 20
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Tags: databases
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  1. The application must release the row-level Share lock it holds and acquire an Update lock on the row

  2. The application must release the row-level Share lock it holds and acquire an Update lock on the table

  3. The row-level Share lock will automatically be converted to a row-level Up-date lock

  4. The row-level Share lock will automatically be escalated to a table-level Up-date lock


Correct Option: C

Which of the following is used to indicate a column will not accept NULL values and can be referenced in another table's foreign key specification?

  1. Check constraint

  2. Default constraint

  3. Unique constraint

  4. Informational constraint


Correct Option: C

What authority is required to create a table?

  1. ADMIN Privileges

  2. CREATETAB Privileges

  3. No Privileges

  4. USERTAB Privileges


Correct Option: B

Given the following scenario: Table TABLE1 needs to hold specific numeric values up to 9999999.999 in column COL1. Once TABLE1 is populated, arithmetic operations will be performed on data stored in col-umn COL1. Which of the following would be the most appropriate DB2 data type to use for column COL1?

  1. INTEGER

  2. REAL

  3. NUMERIC (7,3)

  4. DECIMAL(10,3)


Correct Option: D
  1. Control Center

  2. Command Center

  3. Command Line Processor

  4. Task Center


Correct Option: D

How do you find the total number of rows in a table ?

  1. SELECT COUNT *

  2. SELECT COUNT(*)

  3. SELECT COUNT[*]

  4. SELECT COUNT(ALL)


Correct Option: B

Given the following statement: CREATE TABLE t1 col1  SMALLINT NOT NULL PRIMARY KEY, col2  VARCHAR(200) NOT NULL WITH DEFAULT NONE, col3  DECIMAL(5,2) CHECK (col3 >= 100.00), col4  DATE NOT NULL WITH DEFAULT) Which of the following definitions will cause the CREATE TABLE statement to fail?

  1. COL1

  2. COL2

  3. COL3

  4. COL4


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

_____ is dropped when the table or tablespace is dropped

  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

When you open a cursor, DB2 will always get all rows that meet the selection criteria and create a result set?

  1. Yes

  2. No

  3. It Depends

  4. None of the above


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

Which wildcard character is used for a single character replacement

  1. %

  2. &

  3. _

  4. None of the above


Correct Option: C

To retrieve data from more than one table we could use

  1. Joins

  2. Unions

  3. Nested SELECT

  4. All of the above


Correct Option: D
  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
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