Answer Posted / rajendra prasad reddy penumall
these two are SQL concepts
TRigger is a special type of stored procedure that
automatically takes effect when the data in a specified
table is modified.
triggers invoked in response to an INSERT,UPDATE OR DELETE
STATEMENT EXECUTED.
TRIGGERS are used to handle some exceptional conditions
if u r moving data 40 MB into data base,But data base having
only 30 mB free space then the trigger fires automatically
and the entire transaction automativcally roll backs.
Rules:
Rules are database objects used to enforce data integrity.
this object bound to column or userdefined data types.
to ensure that only valid values are allowed to insert in
to columns.
so trigger acts automatically nad rollbacks the transaction
when error is occured.
rule is used to enforce data integrity on a column or user
defined data type.
are you clear if you want any clarification please mail to
me.
| Is This Answer Correct ? | 12 Yes | 2 No |
Post New Answer View All Answers
What is acid property in client server environment?
What is an object server in client server environment?
In RMI ,server object is first loaded into memory and then the stub reference is sent to the client. true or false?
Is dna organic?
Give full information about infrared technology, like applications, advantages, disadvantages?
Why chemists have not created a periodic table of compounds?
Explain what is the classification of clients?
Which is not a final product of the overall cell reaction in a hydrogen fuel cell?
Never found uncombined on earth, what element occurs abundantly in limestone, gypsum and fluorite?
What Network traffic is generated if one call connect on a socket of type SOCK – DGRAM?
What is the difference between Server and Client side ?
How many significant figures are there in the number 0.0036?
Cellulose is a polymer of repeating units of what molecule?
What is a tp monitor in client server environment?
What are 3 facts on evaporation?
