Introduction to Database Management System(DBMS)
Data in DBMS: Data is raw facts or unprocessed values. it can be in the form of numbers, characters, symbols, images, graphics, etc. Data is input given by the computer by the users. It is meaningless on its own. example : 10061995 - Just a number (we don't know what it means). Information in DBMS: Process data us called information. It is meaningful and useful. information can be reproduced again and again. example: 10061995- If we know it's someone's date of birth, it becomes meaningful information. What is Database? A database is a file that is used to store a collection of organized data which can be easily accessed, managed, and updated. Key points: Database stores data in a structured form (like tables). It helps in quick retrieval and processing of data. Data in a database can be added, deleted, modified, and searched easily. Example: A school database may store: (Student names, Roll numbers, Marks and Addresses). A library database stores(Book names, Author names...