Which normalization level is adopted in real-world database systems? 05/21/2017 – by Mod_GuideK 0 Which normalization level is adopted in real-world database systems? A. 1NF B. 2NF C. 3NF D. BCNF SHOW ANSWERSCorrect Answer: A Explanation/Reference: Explanation: Download Printable PDF. VALID exam to help you PASS.