Module 3: MCQ with correct answer on Database Theory concept from Q1. A primary key if combined with a foreign key creates . a). Parent-Child relationship between the tables that connect them. b). Many to many relationship between the tables that connect them. c). Network model between the tables that connect them. d). None of the above Correct answer: a) Parent-Child relationship between the tables that connect them Q2. In E-R Diagram relationship type is represented by . a). Ellipse b). Dashed Ellipsed c). Rectangle d). Diamond Correct answer: d) Diamond Q3. Hierarchical model is also called . a) Tree structure b) Plex Structure c). Normalize Structure d). Table Structure Correct answer: a) Tree structure Q4. To delete a particular column in a relation the command used is: a). UPDATE b). DROP c). ALTER d). DELETE Correct answer: c) ALTER Q1. The ______ operator is used to compare a value to a list of literals values that have been specif...