Question: Explain how dangling tuplesmay arise Explain problems that they
Explain how dangling tuplesmay arise. Explain problems that theymay cause.
Answer to relevant QuestionsFor 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 databasesExplain the distinction in meaning between edges in a DAG representing inheritance and a DAG representing object containment.Consider a system that provides persistent objects. Is such a system necessarily a database system? Explain your answer.Consider the relational schema shown in Figure below.a. Give a schema definition in SQL: 1999 corresponding to the relational schema, but using references to express foreign-key relationships.b. Write each of the queries in ...Write queries in XSLT and in XPath on the DTD of Exercise 10.3 to list all skill types in Emp.Emp = (ename, ChildrenSet setof (Children), SkillsSet setof (Skills))Children = (name, Birthday)Birthday = (day, month, ...
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