Databases, SQL and MySQL

A database consists of data that is structured in a certain order or according to a set of pre-defined rules. An example from the real world would be a phone book which contains information about the subscribers - names, addresses, phone numbers. The information in the phone book is structured in an alphabetical order and this allows us to quickly find any number as long as we know the subscriber's names. The alphabetical order is an advantage since it saves time while we are looking for a given subscriber.

In computer systems, a database is a structured collection of data. The specific structure is defined by the way the data is organized, which depends on the database model used. The most commonly used model today is the relational database model.

In order to manage the information stored in a database, a set of tools is required. Such a set is the SQL language. SQL stands for Structured Query Language and is meant for database management purposes. The database management process is related to various database operations such as retrieving, adding, removing, changing and updating data.

MySQL is one of the most widely used relational database management systems (RDBMS). It is being used for various web-based applications. It provides reliable mechanisms through which the information stored in a database can be managed.

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