Database Concept

A database can be describe as a system whose key concept is simply way of handling data. It is something like a automated way of record-keeping. It can be defined as an organized collection of related sets of data that can be accessed by more than one user by simple means and can be searched to find relevant information. Related data includes:

1. Entity or attribute - the smallest  component of a database.  This gives the characteristics of an object.  ex. The id number of an employee of LPU - Batangas
   
2. Field - contains a specific type of information within a data set or record that can divided.  ex. The name of an employee of LPU - Batangas
3. Record - is a collection of related fields or information.  ex. The id number, name, address, of an employee of LPU - Batangas.
4. File - collection of records.  ex. Plantilla of all employees of LPU -Batangas for November 2009.
5. Database - is an organized collection of related files.  ex.  201 files of all employees of LPU -Batangas.

Databases can have the following properties:

1. integrated with different applications
2. eliminates or reduces redundancy of data
3. independence of data that makes it flexible to changes
4. allows sharing
5. provision for centralized access and security control