2023 This question tests how well you understand the algorithm for converting E R diagrams to relational schemas An E R | Assignment Collections
Computer Science 2023 Reverse Engineering
2023 This question tests how well you understand the algorithm for converting E R diagrams to relational schemas An E R | Assignment Collections
This question tests how well you understand the algorithm for converting E/R diagrams to relational schemas. An E/R diagram when converted to relations (using the mechanical construction that we know and love) gives rise to the following relations:
- R(a, b, c)
- S(a, d)
- T(a, d, f, g)
You may assume that the same symbols refer to the same attribute and different symbols refer to different attributes (e.g., the attributes a in the relations R, S and T are the same) i.e. it ultimately comes from a single entity set or relationship in the E/R diagram.
Your task is to reverse-engineer the E/R diagram from these relations; in other words, what E/R diagram could have produced these relations. For full credit, give two different E/R diagrams that could have produced these (and only these) relations (i.e. 10 points for each correct E/R diagram).
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