Update Calendar when changing items in another list

We want to implement a sharepoint modification that solves the following 2 tasks:

A) Update the Calendar when inserting / changing / deleting items in another list.

B) Update the corresponding dates of this other list from within the calendar

Questions to the experts:

- Is it possible to solve A), B), both?
- What other tools would we need (Visual Studio...),
- What skills does one need to solve such a problem, how long should it take to solve it?


Details:

We use a sharepoint calendar.
In the same web, there is another list that keeps track of events (exhibitions).
The even-list beneath some other information has two dates: event-start and event-end.

Requirement A): When a new event is added or changed or deleted, the teams calender shall be updated: "Event x from start_date to end_date"
For example: user adds event "Exhibition Marc Chagall Zurich" "December 20th 2011" to "January 20th 2012" then the
teams calendar should show the event-name, event-start and end for all team members.
When the start and end dates are changed, then the teams calendar should be updated accordingly. Same after Delete of an event.

Requirement B): When a team member changes the start or end date of an event in the calender, this should be
reflected in the list that tracks the events.





joachim58Asked:
Who is Participating?
 
joachim58Author Commented:
Soved this problem myself with out workflow.
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joachim58Author Commented:
Sharepoint 3 (2007) Services
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TEEDACommented:
So you need the list to update several calendars and those calendars to update the list? It should be possible with workflows, one for the list, which updates the calendars, and one for each of the calendars, which updates the list. Because the workflows are going both ways, it could create a loop, so you need to be sure to set the last action in the workflow to "stop the workflow".  In WSS, I'm not sure this is an OOTB option, but the Extended Workflow add on in Codeplex has this as far as I recall (I'm on 2007 now).  Good luck.
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joachim58Author Commented:
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joachim58Author Commented:
Focus on A):

There is a list "Exhibitions". It has multiple columns, three of them are "Exhibtion-Title", "start_date" and  "end_date", all three are obligatory.

In the same site, there is also one Calendar (the standard Calendar).

Whenever a new item is added to "Exhibition" the calendar should be updated automatically based on "Exhibition-Title", "start_date" and "end_date".

My question is made up of three points:

1)  Is it possible to solve the problem (Yes or No)
2)  What other tools would we need (Visual Studio, SDK's...),
3)  What skills does one need to solve such a problem, how long should it take to solve it?




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joachim58Author Commented:
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joachim58Author Commented:
solved this problemn myself
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