Database Management System is an important topic for aptitude as well as interview in the placement process. For CS/IT students, DBMS acts like a foundation and is used throughout the engineering career. Hence good DBMS knowledge plays an important role in getting placed in majority of the IT companies. Following is the list of important questions which must be done before appearing for the interview process. What is Database Management System? List the different advantages of DBMS. What do you mean by abstraction and what are the different levels of abstraction? What do you mean by instance? What is a schema? List its types. What is data independence and its types? What are the different SQL languages and the commands associated with them? Explain the ER diagram. (Entity, Attributes, Relationships, Cardinality, Participation) Explain specialization, generalization and aggregation. Explain the different keys used in SQL. What is the difference between Char and Va...