Question
Which functional dependency does not holds in given
relation and why? Read the below passage and answer the questions Functional dependency A B means that B is dependent on A i.e. from the value of A we can find the value of B from the relation. Therefore, to prove A B holds in a relation, one of the following conditions must be true: Condition1: either all the value of A must be unique Or Condition2: all the value of B must be same Or Condition3: If two or more tuples/rows of the relation have same value for attribute A then there must be also same value for attribute B i.e. if t1[A] = t2[A] then there must be t1[B] = t2[B].Solution
v->wx satisfies condition 3 i.e. value of v is repeated 3 times ( 7 ) then value of wx is also repeated . so option 1 is correct. yz->x satisfies condition 2, i.e. all values of x are same, so option 2 is correct. x ->yz does not satisfy any of the three conditions, so option 3 is incorrect.
Which of the following is included in the definition of a "bond"?
Under which act APEDA (Agricultural and Processed Food Product Export Development Authority) was established in 1985?
Which provision of Consumer protection act 2019 talks about rights of consumers?
Section 53-A of the Evidence Act as introduced by the Criminal Law Amendment Act, 2013 makes:
A desires a Court to give judgment that B shall be punished for a crime which A says B has committed
According to Code 80 of the Occupational Safety, Health and Working Conditions Code, 2020, how many days in advance must an employer apply for permissio...
Under which Section of CrPC, an arrested person is to be examined by the Government Medical Officer immediately after arrest?
Every suit instituted, appeal preferred, and application made after the prescribed period shall be dismissed-
The principle that “the same income should not be taxed twice in the hands of the same person” refers to which of the following?
According to the principle of indemnification in partnership law, what obligation does a partner have if they commit fraud in the conduct of the firm's ...
