Sql server Constraints – Primary Key, Foreign Key, Unique Key, Not Null, Check Constraints
Introduction A constraint is a property that is assigned to a column or a group of columns to prevent incorrect…
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Difference between Subquery, Nested Subquery and Correlated Subquery Query Query can be defined as a way to inquire the data…
Introduction A constraint is a property that is assigned to a column or a group of columns to prevent incorrect…
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