Question 19 Which of the following statements is TRUE? A The cardinality ratio for a binary relationship specifies the maximum number of relationship instances that an […]

Question 357 ER modeling technique is a A top-down approach B bottom-up approach C left-right approach D none of these Database-Management-SystemER-ModelTNPSC-2012-Polytechnic-CS Question 357 Explanation:  1. ER […]

Question 445 Find minimum number of tables required for converting the following entity relationship diagram into relational database? A 2 B 4 C 3 D 5 […]

Question 320 The constraint that specifies the number of entities to which another entity can be associated via a relationship set in E-R model is referred […]