MySQL is a free and open source relational database management system. It is the most popular database system used in web applications. MySQL is written in C and C++.MySQL has many built-in functions for performing operations on strings numbers and dates. These functions can be used in SQL queries and stored procedures.String functions: CONCAT: Concatenates two or more strings. LCASE: Converts a string to lowercase.UCASE: Converts a string to uppercase.MID: Extracts a substring from a string.LEN: Returns the length of a string.SUBSTRING: Extracts a part of a string.Number functions: ABS: Returns the absolute value of a number.CEILING: Rounds a number up to the next highest integer value. FLOOR: Rounds a number down toMySQL is a powerful database management system used by millions of websites and applications. It offers a wide range of features including a robust SQL syntax support for stored procedures triggers and views and a wide variety of data types. MySQL also provides a rich set of functions for performing operations on data stored in databases. These functions can be used to manipulate strings numbers dates and other data types. In addition MySQL offers a number of aggregate functions that allow you to summarize data from multiple rows into a single value.MySQL is a free open source database management system. It is a popular choice for web applications and is used by many high-profile organizations including Facebook Twitter and YouTube. MySQL is known for its speed reliability and flexibility. It can be used for a wide variety of applications including data warehousing e-commerce and logging applications. MySQL has many built-in functions that allow you to manipulate data in a variety of ways. These functions can be used to perform mathematical operations convert data types and format dates and strings. In addition there are a number of third-party libraries that add even more functionality to MySQL.