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Introduction to Database & Database Administrator roles

Database:
A database is an organized collection of data, generally stored and accessed electronically from a computer system. 
Where databases are more complex they are often developed using formal design and modeling techniques.

The database management system (DBMS) is the software that interacts with end users, applications, 
and the database itself to capture and analyze the data. The DBMS software additionally encompasses 
the core facilities provided to administer the database. The sum total of the database, the DBMS and 
the associated applications can be referred to as a "database system". Often the term "database" 
is also used to loosely refer to any of the DBMS, the database system or an application associated with the database.

Database Admin:

 A database administrator (DBA) is a specialized computer systems administrator who maintains a successful database environment
by directing or performing all related activities to keep the data secure. The top responsibility of a DBA professional is to maintain data integrity.
This means the DBA will ensure that data is secure from unauthorized access but is available to users.

A database administrator will often have a working knowledge and experience with a wide range of database management products such as MySQL,MongoDB,PpostgreSQl and SQL Server.

Responsibilities Of Database Administrator

Starting, Stopping and Configuring MySQL
Security-Related Configuration
MySQL Database Creation
Using Client Programs for MySQL DBA Work
Setting up Character Set Support
Locking
Using Storage Engines, including the MyISAM and InnoDB engines
Table Maintenance
Obtaining Data from the Information_Schema Database
Backup and Recovery, including Exporting (mysqldump) and Importing (mysqlimport
Using Stored Procedures and Triggers for Database Administration Tasks
User Management
Securing the Server
Upgrade-Related Security Issues
Optimizing Queries
Optimizing Schemas
Optimizing the Server
The Event Scheduler
Partitioned Tables
Interpreting Error Messages
Optimizing the MySQL Environment
Scaling MySQL, including Replication

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