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The MySQL prompt appears, allowing queries to be performed on the MySQL server.
PRIVACY PRACTICES
Update your database passwords regularly, avoid reusing them and always back up your
database work.
SQL DATA TYPES
A data type defines the type of value that a column will contain. In a database table, every
column must have a name and a data type. Some common SQL data types and their descriptions
listed below:
Data Type Description Example
age INT;
INTEGER(INT) Stores whole numbers (no decimals).
Example: 25, 30
Stores fixed-length character strings of gender CHAR(1);
CHAR(n)
size n. Example: ‘M’, ‘F’
Stores variable-length character strings name VARCHAR(50);
VARCHAR(n)
with a maximum size of n. Example: ‘Yash Gupta’, ‘Sonia’
Stores numbers with precision p and price DECIMAL(5,2);
DECIMAL(p,s)
scale s. Example: 123.45, 99.99
Stores date values in YYYY-MM-DD birthdate DATE;
DATE
format. Example: ‘1990-05-25’
Stores floating-point numbers with temperature FLOAT(5);
FLOAT(p)
precision p. Example: 98.6, 35.75
appointment_time TIME;
TIME Stores time values in HH:MM:SS format.
Example: ‘10:30:00’, ‘15:45:00’
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