Hi I am currently on a project and i need some help.
I need to create a trigger to stop an insert into the project table if the date of the project newly inserted is between the start date and end date of an existing project on the project table with respect to the departments.
Department table
dpno | Department |
1 | Marketing |
2 | IT |
project table
pjno | Project | Start date | End date | Dpno |
30 | SMEs | 20-jan-2014 | 08-mar-2014 | 1 |
40 | DATABASE | 30-jan-2014 | 04-apr-2014 | 2 |
50 | TECHNOLOGY | 06-apr-2014 | 09-jun-2014 | 2 |