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You need to read data from three oracle tables that store sales data from three regions to load into a single oracle table. These three tables are having the same table definitions and the only difference is that each table contains data for a particular region. Which of the following will do the required task?

  1. Create a task with single oracle enterprise stage that executes a custom SQL statement with FETCH ALL, that outputs to an Oracle enterprise stage.

  2. Create a job with three Oracle Enterprise stages to read from the tables and output to a collector stage which in turn outputs the data to an Oracle Enterprise stage.

  3. Create a job with a single Oracle Enterprise stage that executes a custom SQL statement with UNION ALL that outputs the data to an oracle enterprise stage.

  4. Create a job with three Oracle Enterprise stages to read from the tables and output to a Funnel stage which in turn outputs the data to an oracle enterprise stage.
Reveal answer Fill a bubble to check yourself
C,D Correct answer
Explanation

Both using a single Oracle Enterprise stage with a custom UNION ALL SQL statement and using three Oracle Enterprise stages combined via a Funnel stage are valid ways to consolidate and load the regional data.

AI explanation

To answer this question, let's go through each option to understand why it is correct or incorrect:

Option A) Create a task with a single Oracle Enterprise stage that executes a custom SQL statement with FETCH ALL, that outputs to an Oracle Enterprise stage.

This option is incorrect because using FETCH ALL in a custom SQL statement will only fetch all rows from a single table, not from multiple tables.

Option B) Create a job with three Oracle Enterprise stages to read from the tables and output to a collector stage which in turn outputs the data to an Oracle Enterprise stage.

This option is incorrect because using a collector stage will not combine the data from the three tables into a single table. It will only collect the data from each table separately.

Option C) Create a job with a single Oracle Enterprise stage that executes a custom SQL statement with UNION ALL that outputs the data to an Oracle Enterprise stage.

This option is correct because using UNION ALL in a custom SQL statement will combine the data from the three tables into a single result set. The Oracle Enterprise stage can then output this combined data to a single table.

Option D) Create a job with three Oracle Enterprise stages to read from the tables and output to a Funnel stage which in turn outputs the data to an Oracle Enterprise stage.

This option is correct because using a Funnel stage will combine the data from the three Oracle Enterprise stages into a single stream. The combined data can then be output to an Oracle Enterprise stage to load into a single table.

The correct answer is C, D. These options will allow you to read data from the three Oracle tables and load it into a single Oracle table. Option C uses UNION ALL in a custom SQL statement, while Option D uses a Funnel stage to combine the data.

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