Database

What is database?
 
 A database is an organised data collection, generally stored and accessed electronically from a computer system. They often developed using formal design techniques.


                            Advantages of Database

• Reduce updating error and increased consistency.
• Improved data access to users through the use of host and query language.
• Improved data security
• Facilitate development of new application program.
• Greater data integrity abd independence from application program.

                         Disadvantages of Database

• Extensive conversion costs in moving from a file-based system to a data system. 
• They are time-consuming to design.
• Damage to database affects virtually all application program.

Examples:

• Casandra
• MySQL
• SQL Server
• RedShift
• MariaDB