Interested to Buy Any Domain ? << Click Here >> for more details...
What is referential integrity?
- 5 Answers
- 19930 Views
- I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / sadiq afroze
Referential integrity refers to the consistency that must be
maintained between primary and foreign keys, i.e. every
foreign key value must have a corresponding primary key value
| Is This Answer Correct ? | 22 Yes | 5 No |
Answer / renu gupta
Referential integrity refers to the consistency that must
be maintained between primary and foreign keys.
1.An insert into primary key table cannot violate
referential integrity and no checking is required
2.A deletion of foreign key value can not violate
referential integrity and no checking is required
3.Changes in primary key is allowed only when those values
are not in foreign key.
4.Insert and updates in foreign key is allowed only when it
has a matching value in primary key
5. If RESTRICT is specified on foreign key definition,
deletion of primary key is not allowed
6. If CASCADE is specified, both primary and foerign keys
values can be deleted together only
7. If SET NULL is specified, then the foreign key value is
set null , provided nulls are allowed in the foreign key
column
| Is This Answer Correct ? | 12 Yes | 4 No |
Answer / raghavendra k
For every Foriegn Key value in child table, there must be
same value is present in primary key column of parent table.
| Is This Answer Correct ? | 6 Yes | 3 No |
Answer / pranab kumar mohanty
The relation of the primary key of a base table with
foreign key of the reference table is known as referential
integriety.
| Is This Answer Correct ? | 5 Yes | 2 No |
Answer / guest
It is used relate more than table using RDBMS.For example
if you two table TAB1,TAB2.TAB1 which has column empno with
value ,TAB2 which has same value as previous mentioned TAB1
value.
Row in one table that are related Row in another table .
| Is This Answer Correct ? | 4 Yes | 4 No |
how do you resolve -818 error in db2. where we have to see time stamp token. i said by seeing in load module and plan .is it correct or not. give clear explination for how to see time stamp token
Mention the downsides of page level lock.
why should we bind the DB2 program . What if we did not BIND a BD2 program ??
9 Answers Infosys, TCS, Xansa,
How would you print the output of an SQL statement from SPUFI?
How can you quickly find out the # of rows updated after an update statement?
What is the difference between TYPE 1 index & TYPE 2 index
What is lock contention?
have 3 tables table1, table2 and table3 which contains employee information. table1 is master table, table2 contains emp details like emp no and so on, table 3 contains emp salary. so if any emp leave company between 25th - 30th of every month it has to get updated in tables. but it is not getting updated. What is the reason.
Explain db2.
where can we use index and subscript ? with example ?
When do you specify the isolation level?
what is rebinding ?
COBOL 
