The term "data integrity" can mean different things to different people, but the most difficult and pervasive problem facing organizations these days is the semantic integrity of the data. As ...

The CHECK constraint limits the value range that can be placed in a column. It ensures only specific values are accepted either on a single column or based on conditions across multiple columns.

create table snapdeal_orders ( order_Id int not null, -- now we can not add null value in column order_id , not null constraint order_date date, -- "yyyy-mm-dd" is standard format product_name varchar ...