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Consider the following four relational schemas. For each schema, all non-trivial functional dependencies are listed. The underlined attributes are the respective primary keys. Schema I: Field ‘courses’ is a set-valued attribute containing the set of courses a student has registered for. Non-trivial functional dependency: rollno → courses Schema II: Non-trivial functional dependencies: rollno, courseid → email email → rollno Schema III: Non-trivial functional dependencies: rollno, courseid → marks, grade marks → grade Schema IV: Non-trivial functional dependencies: rollno, courseid → credit courseid → credit Which one of the relational schemas above is in 3NF but not in BCNF?
A psychologist always encourages his patients not to get upset about trivial matters. Trivial means.
Which of the following statements supports a positive approach in society for diversity in language? I. Naga people of the same subgroup speak to each other in their mother tongue, while they use Nagamez when talking to someone outside their community. II. People in Goa are fighting over the existence of Marathi and Konkani. III. Conflict between Marathi and Kannada in Belgaum.
NITI Aayog, along with a working subgroup of officials and members of civil society, has prepared a draft national migrant labour policy. The draft describes how many approaches to policy design?
There are 3 Indians and 3 Chinese in a group of 6 people. How many subgroups of this group can we choose so that every subgroup has at least one Indian?
Let G be a group order 6, and H be a subgroup of G such that 1 < |H| < 6. Which one of the following options is correct?
A subgroup has the properties of ________
Minimum subgroup of a group is called _____________
Let K be a group with 8 elements. Let H be a subgroup of K and H
The group of matrices with determinant _________ is a subgroup of the group of invertible matrices under multiplication.