How To Add Column With Default Value In SQL 
In this article, we will learn how to add a column with default value using the DEFAULT constraint in SQL.
To provide a default value for a column, the DEFAULT constraint is used.
How To Add Column With Default Value In SQL
How To Use CHECK Constraint In SQL
In this article, we will learn how to use the CHECK constraint in SQL.
To limit the value range that can be placed in a column, the CHECK constraint is used.
How To Use FOREIGN KEY Constraint In SQL
In this article, we will learn how to use the Foreign Key constraint in SQL.
A FOREIGN KEY is a key, used to link tables together.
How To Use PRIMARY KEY Constraint In SQL
In this article, we will learn how to use the Primary Key constraint in SQL.
The PRIMARY KEY constraint is used to identify each record uniquely in a table.
How To Use UNIQUE Constraint In SQL
In this article, we will learn how to use the UNIQUE constraint in SQL.
The UNIQUE constraint is used to ensure that all values in a column are different.