Given the E/R diagram below, which of the following statements is true?

Select one answer.

Question

Given the E/R diagram below, which of the following statements is true?

Select one answer.

BlackTom AI · Accepted Answer

The task presents a question about an E/R diagram and asks which statement is true, with only one answer option provided in the data. Here, the available information includes:
- The question: "Given the E/R diagram below, which of the following statements is true? Select one answer."
- The answer field contains a single statement: "All entities of type Store are either a Fridge or a Cupboard."
- There are no answer options listed in answer_options.

Because there are no answer choices to evaluate, we cannot perform a choice-by-choice analysis of which option is correct or incorrect. In a typical E/R diagram question of this form, such a statement would usually reflect a structural constraint such as a generalization/specialization (supertype/subtype) relationship. If Store is a supertype with Fridge and Cupboard as disjoint subtypes, and the specialization is total (every Store must be either Fridge or Cupboard), then the statement would be true. Conversely, if the specialization is partial (not all Stores must be one of the subtypes) or if Fridge and Cupboard are not properly defined as subtypes of Store, the statement could be false.

Without the actual diagram or the list of answer options to compare, we can only discuss the factors that would determine truthfulness:
- Is Store a supertype with Fridge and Cupboard as subtypes? If yes, the statement could be true, provided the specialization is total and disjoint.
- If the specialization is partial, some Stores might not be Fridge or Cupboard, making the statement false.
- If Fridge and Cupboard are not subtypes of Store, or if there is overlap between subtypes, the interpretation changes and the statement may not hold.

In summary, due to the absence of answer options and the diagram itself, we cannot conclude whether the provided statement is true. To proceed, one would need the actual E/R diagram and the complete list of answer choices to evaluate each option against the diagram’s constraints (generalization/specialization type, disjointness, and whether the specialization is total or partial).

G6031: Databases Databases MOCK EXAM Part 1

Given the E/R diagram below, which of the following statements is true? Select one answer.

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