Answer / mohammadanis

DB2 Isolation is locking technqiue for tables.It can given
while binding the programs. There are several Isolation
levels are there,

1 CS(cursor stability)
2 RR(repeatable read)
3 RS(READ Stability)
4 UR(Uncommited read also known as Dirty read

Answer / bala

Isolation by its name explains the level by which two or more concurrent transactions are isolated from each other to maintain the data integrity in the database.

for example transaction A and transaction B are concurrent transactions, then it defines if A can read/update the data being modified by B or not and vice versa.

These Isolation levels will be used based on the business logic.

in the CURSOR declare statement, if i am using an where clause and trying to compare the value with a host-varialble. EXEC SQL DECLARE C1 CURSOR FOR SELECT DEPTNO, DEPTNAME, MGRNO FROM DEPARTMENT WHERE ADMRDEPT = :ADM-DEPT Where would i need to provide value to this host-variable in the where clause. how could i pass value to this host-variable to check it.

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