Data are getting cashed for Deatils in master detail table .

Hi All,
I have created an entity association between department and manager.
There is a method in am to create the record in Department.
Department creation method is calling the Manager creation method using association accessor which is defined in the DepartmentEO.
At the end of successful exection of this method it is creating an record in Department and Manager.
If i am calling department creation method second time without saving the record which was created earlier then under one department its showing two managers.
I mean Its showing the manager records what was created in previous steps as well as created with current department.
If i keep repeating the process no of magers are keep increasing .
Ideally it should show only one manager but records of managers are getting cashed.
Please provide me some pointed how to get rid of this issue.
Thanks,
Arun.

Hi Timo,
Take this scenioro with following usecase .
Suppose there is a mster detail relationship between Department and mager Foreign key as departmentid.
If i create a new row in department with DeptId=10 then one record for detail Manger will be created with deptId=10 and say manger id =10.
without saving this record if i am invoking create method for department then one record for department is created with deptid=11 and detail mager table showing two records with deptid=10 and deptid=11.
If i repeat the same step third time mager is showing 3 record with dept id 10,11 and 12.
Since there is Association between Depat and Manger with deptId.
So for Deptid=12 it should show only that manger having deptid=12 but its showing all the manger created in previous steps.
Thanks,
Arun.

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create table master (
id number primary key,
changed date not null
create table detail (
id number primary key,
master_id references master (id) on delete cascade
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master_deleted boolean := false;
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insert into detail values (12, 1);
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insert into detail values (21, 2);
insert into detail values (22, 2);
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This is disaster - ten attempts to format code!

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Data are getting cashed for Deatils in master detail table .

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