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What is the difference between column level constraints and
table level constraints?
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Answer Posted / akki
column constraint is only for particular column to provide restriction,
where in table level constraint we define multiple constraint at same time except not null .
not null is only used for column level.
ex: create table customer(cust_id number(2) not null,cust_name varchar2(20)check(cust_name like 'C%');
above example is shows constraints on column level.
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