Question: Consider the algorithm in figure to compute Show that t
Consider the algorithm in figure to compute α+. Show that this algorithm is more efficient than the one presented in Figure (Section 7.3.3) and that it computes α+ correctly.
Answer to relevant QuestionsGiven the database schema R (a, b, c), and a relation r on the schema R, write an SQL query to test whether the functional dependency b → c holds on relation r. Alsowrite an SQL assertion that enforces the functional ...List the three design goals for relational databases, and explain why each is desirable.Given the three goals of relational-database design, is there any reason to design a database schema that is in 2NF, but is in no higher-order normal form?Explain how the concept of object identity in the object-oriented model differs from the concept of tuple equality in the relational model.Consider the database schema Emp = (ename, set of(Children), setof(Skills)) Children = (name, Birthday) Birthday = (day, month, year) Skills = (type, set of(Exams)) Exams = (year, city) Assume that attributes of type set ...
Post your question