Shift Schedule database design

Hi,

I have to design a generic database solution for shift schedule. Some of our clients work in a daily schedule. I mean Mon, Tue, Wed, Thur, Fri from 8 AM to 4 PM and next week from 4 PM to 12 AM. Others have a continental schedule, the employee works 3 days and is off one day.
Does anyone know if I can find a database design pattern for this type of schedule shifts?
Thanks in advance
ThinkerBAsked:
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Bob LearnedCommented:
What kind of "generic" database pattern are you looking for?  What kind of data do you need to store?
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ThinkerBAuthor Commented:
What I am thinking is one table that I should be able to define ShiftTypes and another one that will have shifts per user I mean based on shift type I need to be able to generate records on shift table.
The complex part is that I need to be able to define different types of shifts. Some will have fixed days and variable schedule (morning in one week and afternoon on the next one) and some users will have continental shift (3 days of work and one off).
Generic means the solution has to fit at least those two requirements.
Any ides is appreciated.
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Bob LearnedCommented:
Do you need to store the dates for each user?  Do you need to generate a work schedule for a specified period?
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ThinkerBAuthor Commented:
Yes I am thinking about generate the dates and store that because I need to assign activities for that day if the user is working on the shift the activity has to occur.
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Bob LearnedCommented:
Something like this?

User
         UserID
         FirstName
         LastName        

UserShift
         UserShiftID
         UserID
         ShiftID

Shift
         StartDate
         StartTime
         EndTime
         DayInterval
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Ryan McCauleyEnterprise Analytics ManagerCommented:
It seems like the scheduled will vary from day to day and week to week, so setting up standard schedules really won't do you any good. Based on what you're describing, I'd just set up a table with a list of the person's particular shifts, along with a notes field where you could fill anything you wanted specific to that particular shift. You'd need some kind of ID for the Employee, a Start/End Datetime (because a shift can span midnight, you'll need the whole datetime for both the start and end). Depending on how you track this data, you may also want to keep not only their scheduled times, but their actual clock in/out times as well.
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ThinkerBAuthor Commented:
TheLearnedOne,

The issue with this design is that in one week that person will be on the morning shift and the next week he will be in the afternoon and I need to generate the schedule every week.
But I appreciated both ideas.
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Bob LearnedCommented:
That sounds like you need something more.  How many different combinations of shift types do you have?

If you store each combination in a ShiftType table, then you would just need to know that type, and the StartDate + DayInterval to determine the EndDate.

User
         UserID
         FirstName
         LastName        

UserShift
         UserShiftID
         StartDate
         ShiftTypeId

ShiftType
         ShiftTypeId
         Description
         StartTime
         EndTime
         DayInterval
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