Answer Posted / shekar
Triggers: It checks the condition and Performs some action
eg: it checks and fires before or after insert or update
or delete
Constriants: it checks the condition
eg: suppose NotNull constraint.It jst doesn't allow null
values.
| Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
How can we optimize a sql query?
What is the purpose of primary key?
What is trigger types of trigger?
how to calculate the difference between two dates? : Sql dba
how to rename an existing table in mysql? : Sql dba
What is difference between joins and union?
What are the advantages of normalization?
What are field types?
How do I run a sql query in pgadmin 4?
What is the use of nvl function?
What port does sql server use?
What are commit, rollback, and savepoint?
What is the purpose of my sql?
what is row? : Sql dba
What are the key differences between SQL and PL SQL?