Tag: databases

Questions Related to databases

The EMP table contains these columns: LAST NAME VARCHAR2(25) SALARY NUMBER(6,2) DEPARTMENT_ID NUMBER(6) You need to display the employees who have not been assigned to any department. You write the SELECT statement: SELECT LAST_NAME, SALARY, DEPARTMENT_ID FROM EMP WHERE DEPARTMENT_ID = NULL; What is true about this SQL statement?
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  1. The SQL statement displays the desired results

  2. The operator in the WHERE clause should be changed to display the desired results

  3. The WHERE clause should be changed to use an outer join to display the desired results

  4. The column in the WHERE clause should be changed to display the desired results

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Correct Option: B

ISN number is unique across
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  1. Database

  2. Each File

  3. Both a & b

  4. None

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Correct Option: B

ISN value differs for each row if the rows has PE fields
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  1. True

  2. False

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Correct Option: B

1.List some of the flat file types used in Ab Initio:
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  1. ASCII files

  2. comma separated list

  3. excel spreadsheet

  4. All the above

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Correct Option: D

Metadata can be embedded within a component or can be stored external to the graph in a file with a :
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  1. .XFR

  2. .TXT

  3. .DML

  4. None of the above

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Correct Option: C

3The Rate of toleration of reject events in the number of records processed in a dedup sort is
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  1. Ramp

  2. Limit

  3. Check-sort

  4. Reject - Threshold

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Correct Option: A

The keep parameter in dedup sort is optional
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  1. True

  2. False

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Correct Option: B

The maximum number of input ports a join component can have is :
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  1. 10

  2. 20

  3. 15

  4. 5

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Correct Option: B

'record-required n' parameter is available only when the join-type parameter is set to:
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  1. Implicit

  2. Explicit

  3. inner join

  4. Outer join

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Correct Option: B

The default value of max-memory in join component is
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  1. 8388806

  2. 3866086

  3. 8388608

  4. None of the above

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Correct Option: C