Explain why variables called the most powerful component of SSIS?

  Variable allows us to dynamically control the package at runtime. Example: You have some custom code or script that determines the query parameter’s value. Now, we cannot have a fixed value for the query parameter. In such scenarios, we can use variables and refer the variable to the query parameter. We can use variables for like:

  1. Updating the properties at runtime,
  2. Populating the query parameter value at runtime,
  3. used in a script task,
  4. Error handling logic and
  5. with various looping logic.

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