Database

DATA:-Data is define as the representation of facts, concepts or instructions in a formalized manner suitable for communication , interpretation or processing by human or electronic machine . Data is represented with the help of characters LIKE alphabets(a-z,A-Z),digits(0-9)or special characters(+,-,/,<,>,etc).DATA FIELD OR ITEM:-A set of characters which are used together to represent a specific data elements are known as DATA FIELD OR ITEM.In the table the example of data field is ROLLNO, MARKSRECORD:-A record is a collection of fields or it is the row in a giventable that express a specific objects with their properties.INFORMATION:-The data that comes out after the processing on which the decision are take place is called INFORMATION.DATA PROCESSING:-The data processing is a process of converting a data into information on which the decisions can be taken. LIKE marks taken by a student on which he will be declare PASS or FAIL.DATABASE:-Database is collection of interrelated data i.e it is composed of collection of files that are linked in such a way that information from one file may be combine with information from other fileA database is also define as a collection of interrelated data stored together without harmful or unnecessary redundancy to serve multiple application.EXAMPLE:- A database of a given school may contain files or tables like about students, staff, funds etc.DATABASE has some following implicit properties1) A database represents some aspect of real world called miniworld. Changes to miniworld are reflected in database.2) A database is designed, built with data for specific purpose. It has an intended group of users.3) A database is a logically coherent collection of data with some inherent meaning.