Important of DBMS
DBMS Notes Date:-19/6/2019 (1) What is DBMS and advantage over the file system? → Database Management System is used for data storage.In DBMS we can update file any time but it in file system it can not possible. (2) Data models used in DBMS? → (1)Table (2)Document (3)Key Value (4)Graph (3) 1,2 and 3 tier architecture? → In 1-tier architecture we can only insert data in database and in 2-tire it can connect with any application and in the last 3-tier it can connect with any application and also we can send data. (4) Data hiding:- → Data hiding is basically used for data hide in DBMS.As ex if we take election database in which user can see the basic information they can not see the voting numbers. (5) Data Abstraction Model? → Data Abstraction give some of the information about