Question 691 An entity set that does not have sufficient attribute to form a key is termed as: A Primary entity set B Strong entity set […]

Question 692 In concurrency control a situation where ‘ A transaction may be waiting for an x-lock on an item, while a sequence of other transactions […]

Question 693 Conceptual level, Internal level and external level are three components of the three level RDBMS architecture Which of the following is not a part […]

Question 694 For the relation loan(loan_number, branch_name, amount), the query{t|t ∈ loan ∧ t[amount] > 1200} gives: A The loan_number, branch_name and amount for loans over […]