MySQL Data Type

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Data types come in several forms and sizes, allowing the programmer to create tables suited to the scope of the project.
Data Type
Description
CHAR(size)
This type is used to store character strings values of fixed length. The size in brackets determines the number of characters the cell can hold. The maximum number of character(i.e the size) this data type can hold is 255 characters. Ex- EmployeName CHAR(100)

VARCHAR(size)

This data type is used to store variable length alphanumeric data. It is more flexible form of the CHAR data. VARCHAR can hold 1 to 255 characters. CHAR is much faster than VARCHAR sometimes up to 50%.

INT

The INT data type used to store number. An Integer – 2147483648 to 2147483647.

DECIMAL

A long double-precision floating point number.

DOUBLE

A long double-precision floating point number

DATE

A Date in YYYY-MM-DD format.

TIME

Time in the HH:MM:SS format.

DATETIME

Combined date and time in the format YYYY-MM-DD HH:MM:SS

TIMESTAMP

Automatic date and time of last record entry

TEXT

A String up to 65535 characters long.

BLOB

A binary type for variable data.

The DECIMAL data type  parameter specify the total number of permissible digits and the number of digits that may follow the decimal point  not the number of permissible digits for the decimal point’s left side and right side.
e.g : DECIMAL(5,2) permits -999.99 to 999.99

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