What are the differences between Database Trigger and
Integrity constraints ?
Answers were Sorted based on User's Feedback
Answer / ganesh
Trigger: A set of pl/sql statments that are stored
permenantly in the database it activates when ever the DML
operations performed on the table.
constraints: Set of predefind rules are applied on table
column while creating the table or after creating the
table. and automatically performed when DML statemets are
performed by user.
the main differece between the two is
trigger will not effect the existing rows(it will effects
only new rows after creating a trigger on a table),
where as in the constraints it will effect the existing
rows also.
Is This Answer Correct ? | 10 Yes | 0 No |
Answer / nilkantha
I can't find the answer.Pls Give me the right answer
Is This Answer Correct ? | 1 Yes | 2 No |
How do database connections work?
How do you pass parameter in stored procedure?
A lowest level of security by most RDBMS is
Data structure used to implements a menu:
How do I manually create a database?
Explain entity set?
what is meant by Dynamic query?
How many types of normalization? What is the use of it?
plz suggest me the books for the preparation of NIC written exam.
How do I setup a database connection?
Give the syntax of exception handling used in DBMS?
Differentiate between delete and truncate table?