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Normalize the given table below and functional dependencies into 1NF, 2NF,
3NF and BCNF normal forms
12 Aug 2017
15 Aug 2017
01 Sep 2017
05 Sep 2017
FD1= Technician_id, app_date, app_time patient_id, patient_name
FD2 = Technician_id technician_name
FD3 = patient_id patient_name
Let the following relation schemas be given:
R = (A, B, C)
S = (D, E, F)
Let relations r(R) and s(S) be given. Give an expression in the tuple relational calculus
that is equivalent to each of the following:
B. B = 19 (r)
C. r × s
D. A, F (C = D (r × s))
a) Consider a relation R=(A,B,C,D) with the following instance:
Which of the following function dependencies are satisfied? Why or How?
1. A B
2. A CD
3. C D
b) The SQL like operator is case sensitive, but the lower () function on strings can be
used to perform case insensitive matching. To show how, write a query that finds
departments whose names contain the string “sci” as a substring, regardless of the
Write the following inserts, deletes or updates in SQL, using the university schema.
a) Increase the salary of each instructor in the Finance department by 10%.
b) Delete all courses that have never been offered (that is, do not occur in the
c) Insert every student whose tot_cred attribute is greater than 150 as an
instructor in the same department, with a salary of $25,000.
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