What does the once-only principle mean in Estonian e-government?

Answer and explanation

Correct answer: A. The state may not ask for data that it already holds

  1. Step 1: Estonian public databases are connected through X-Road. Step 2. Institutions must look up data themselves instead of asking again. Answer: The state may not ask for data that it already holds. Why not the others: The other statements describe limits that do not exist.

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