Construct an E-R diagram for a hospital with a set of patients and a set of medical doctors. Associate with each patient a log of the various tests and examinations conducted.
Answer to relevant QuestionsA university registrar’s office maintains data about the following entities:(a) Courses, including number, title, credits, syllabus, and prerequisites;(b) Course offerings, including course number, year, semester, and ...Explain the difference between a weak and a strong entity set. In Section 2.4.3, we represented a ternary relationship (Figure a) using binary relationships, as shown in (Figure b). Consider the alternative shown in (Figure c). Discuss the relativemerits of these two alternative ...Draw the UML equivalents of the E-R diagrams. The outer-join operations extend the natural-join operation so that tuples from the participating relations are not lost in the result of the join. Describe how the theta join operation can be extended so that tuples from ...
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