Tag: databases

Questions Related to databases

Which three statements are true about File Sets? (Choose three.)
technology databases

  1. File sets are partitioned.

  2. File sets are unpartitioned.

  3. File sets are stored as a single file.

  4. File sets are readable by external applications.

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Correct Option: A,D

Which three lookup types may be performed in the Lookup stage? (Choose three.)
technology databases

  1. Equality match

  2. Negative match

  3. Range on stream link

  4. Range on the reject link

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Correct Option: A,C,D

You are working on a job in which a sequential file cannot be read in parallel. In an attempt to improve job performance, you first define a single large string column for the non-parallel sequential file read. Which stage may be used to parse the large string in parallel?
technology databases

  1. The Column Import stage

  2. The Column Export stage

  3. The Make Vector stage

  4. The Split Vector stage

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Correct Option: A

What is the lowest CPU cost partitioning method for parallel stage to parallel stage?
technology databases

  1. Range

  2. Modulus

  3. Entire

  4. Same

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Correct Option: D

A DataStage job is sourcing a flat file which contains a VARCHAR field. This field needs to be mapped to a target field which is a date. Which will accomplish this?
technology databases

  1. Use a Column Exporter to perform the type conversion.

  2. DataStage handles the type conversion automatically

  3. Use the TimestampFromDateTime function in a Transformer.

  4. Use the Modify stage to perform the type conversion.

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Correct Option: D

Which Oracle Enterprise stage read property can be set using db options to tune job performance?
technology databases

  1. memsize

  2. arraysize

  3. partitionsize

  4. transactsize

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Correct Option: B

Which import option can be used to import metadata from a data modeling tool such as Erwin or Rational Data Architect?
technology databases

  1. Import using bridges.

  2. Import a table definition using the Connector wizard.

  3. Import DataStage components.

  4. Import a table definition using the Plug-In Meta Data facility.

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Correct Option: A

You need to invoke a job from the command line that is a multi-instance enabled. What is the correct syntax to start a multi-instance job?
technology databases

  1. dsjob -run -mode NORMAL -instance

  2. dsjob -run -mode NORMAL -wait -instance

  3. dsjob -run -mode NORMAL .

  4. dsjob -run -mode MULTI .

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Correct Option: C

Which three property areas must be configured when using the ODBC connector stage as a target in your job design? (Choose three.)
technology databases

  1. Define the connection properties to an ODBC data source.

  2. Define columns for the output link.

  3. Specify properties for the input link.

  4. Define columns for the input link data.

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Correct Option: A,C,D

Which two system variables/techniques must be used in a parallel Transformer derivation to generate a unique sequence of integers across partitions? (Choose two.)
technology databases

  1. @INROWNUM+1

  2. @INROWNUM

  3. @PARTITIONNUM

  4. @NUMPARTITIONS

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Correct Option: C,D