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let's consider this study case : try to implement it in Domino, it will be nightmare !
we have 3 tables
Employee (employee id = eid, lastname, firstname, birth date)
Department (department id = did, name)
DepartmentEmployees(did, eid)
A) how to implement the concept of unique key and foreign key (and prevent the dupplicates)
B) how joining tables and displaying result (without dupplicating information!)
department A
employee 124
employee 35
depatment B
employee 5
employee 6
etc ...
C) deleting the "department A" deletes all records in departmentEmployees table
D) if something goes wrong in the deletion process we can rollback
E) after data selection (query view), being able to process datas (by java beans) and then display result (display view)
example :
data selection : employees <= 30 years old / employees > 30 years old
process datas : profit made by department
display view : a graphic chart
F) more enterprise integration : mix data placed in other databases. distributed transactions etc ...
Feedback response number WEBB7NVJHG created by ~Judy Destookonyetsi on 02/02/2009