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To pass the 1D0-541 certificate exam, ample practice is required. Some people just go through the syllabus expecting that is enough. But when i gave the sample test i understood that i was weak in Structured Query Language (SQL) and Normalization and Database Design topics so i became a premium member of the mock tests which helped me solve this and many other doubts, ultimately helping me clear CIW Database Design Specialist certificate exam.

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