Show that the decomposition in exercise is not a dependency-preserving decomposition.
Answer to relevant QuestionsShow that it is possible to ensure that a dependency-preserving decomposition into 3NF is a loss less-join decomposition by guaranteeing that at least one schema contains a candidate key for the schema being decomposed.Give a lossless-join, dependency-preserving decomposition into 3NF of schema R of Exercise 7.2.For each of the following application areas, explain why a relational database system would be inadequate. List all specific system components that would need to be modified.a. Computer-aided designb. Multimedia databasesUsing ODMG C++, give schema definitions corresponding to the E-R diagram in Figure, using references to implement relationships.Explain the distinction between a type x and a reference type ref(x). Underwhat circumstances would you choose to use a reference type?
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