It is a raw and unorganized fact that required to be processed to make it meaningful. Generally, data comprises facts, observations, perceptions numbers, characters, symbols, image, etc.
Data
It is defined as refined or processed data that has been transformed into meaningful and useful form for specific users.
Information
It is a structured collection of data organized for efficient storage, retrieval,and It can be as simple as a single file or a complex system with multiple interconnected tables.
Database
It is a repository for a collection of computerized data files.
Database
It is a process that manages how and where data on a storage disk, typically a hard disk drive (HDD), is stored, accessed and managed.
File System
Disadvantages of Filesystem
Data redundancy and inconsistency
Data isolation
Integrity problems
Atomicity of updates
Concurrent access by multiple users
Security problems
consists of database (DB) + database Management System(DBMS) + application program
Database System
It’s just a computerized record keeping system.
Database System
Components of Data System
Data
Hardware
Software
User
The data in the database is stored in database objects which are called as ________. This is basically a collection of related data entries and it consists of columns and rows
Table
Every table is broken up into smaller entities called ________. It is a column in a table that is designed to maintain specific information about every record in the table
Field
also called a row of data, is each individual entry that exists in a table.
Record
vertical entity in a table that contains all information associated with a specific fieldin a table.
Column
