Database :A database is a collection of data that is organized so that its contents can be easily accessed, managed and updated. The software used to manage and query a database is known as a Database Management System (DBMS). Then came the concept of Relational Database Management System(RDBMS). Relational database is a database where data are stored in more than one table, each one containing different types of data. The different tables can be linked so that information from the separate files can be used together. This is explained below using an example.Example :Consider the Student's personal information and the test marks in a school. Suppose the student's infomation and test results are stored seperately, we can get information regarding the student's personal information like Address...