3. INTRODUCTION;
• DBMS stands for Database Management System.
• A database management system (DBMS) refers to the
technology for creating and managing databases. DBMS is a
software tool to organize (create, retrieve, update, and
manage) data in a database.
• DBMS Contains information about a particular enterprise.
4. DATA;
• In general, data is any set of characters that is gathered and
translated for some purpose, usually analysis. If data is not
put into context, it doesn't do anything to a human or
computer.
• In a computer’s storage, data is a series of bits binary digits that
have the value one or zero. Data is processed by the CPU, which
uses logical operations to produce new data output from source
data input.
5. DATABASE;
• A database is a systematic collection of data. They support
electronic storage and manipulation of data. Databases make data
management easy.
• Also there are five main components of a database;
6. DATABASE MANAGEMENT SYSTEM;
• A database management system (DBMS) is a software package
designed to define, manipulate, retrieve and manage data in a
database.
• Database management systems are set up on specific data
handling concepts, as the practice of administrating a database
evolves.
• A DBMS generally manipulates the data itself, the data
format, field names, record structure and file structure.
8. WE NEED DBMS IN ORGANISATION;
• Database management systems are important to the
operation of different organizations because they help
manage an organization’s various databases .
• A database management system is also important because it
allows users, particularly leaders, to identify relationships
between relevant data.
• These systems are integrated into the interface that
customers use to make purchases from a business.
• This can help leaders find relationships that are important to
an organization’s operations.
9. ADVANTAGES AND DISADVANTAGES OF DATABASE
MANAGEMENT SYSTEM;
Advantages;
• Controlling Data Redundancy: Data is recorded in only
one place in the database and it is not duplicated.
• Data Consistency; Data item appears only once,and
the update value is immediately available to all users.
• Backup and Recovery Procedures; Automatically
create the backup of data and restore data if required.
• Control over concurrency; In a computer file-based
system in updating, one may overwrite the values
recorded by the other.
Disadvantages;
• Cost of hardware and software; Processor with high speed
of data processing and memory of large size is required.
• Cost of staff training; A lot of amount for the training of
staff to run the DBMS.
• Cost of data conversion; Very difficult and costly method to
convert data of file into database.
• Appointment technical staff; Trained technical person such
as database administrator, application programmers, data
entry operators etc. are required to handle the DBMS.
