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(Solved): 1. Discuss bottom-up and top-down design methodology. 2. Discuss insertion, deletion, and modificat ...
1. Discuss bottom-up and top-down design methodology. 2. Discuss insertion, deletion, and modification anomalies. 3. Why do we have NULL values in the relation? What are the demerits of it? 4. What is multivalued dependency? When does it arise? 5. Describe in detail the \( 1 \mathrm{NF}, 2 \mathrm{NF} \) and also \( 3 \mathrm{NF} \).
Expert Answer
1. Bottom-up :- Bottom-up design is a design methodology in which system components are developed individually and then integrated into a larger syste