Basic question - how do you deploy a Logic app as SaaS?

This is partially a broader question of how you deploy SaaS solutions on Azure, but wanting to know in relation to logic apps.
So let's say I wish to create, for sake of argument, a service that allows contractors to log their hours (either via a phone or through their laptops)
Each contractor is a separate client of mine, and I wish to develop an SaaS service that I can sell to hundreds of contractors.
What is the blueprint for such a solution?
Is it:
- I create a web app to give me a web based interface they can use
- A mobile app in which they can enter their data by mobile
- A logic app to take data from both of these and process and store them into a SQL Server database
And if so, would the only thing separating one contractor from the other be their logins? Or is there way of instantiating separate databases for each user (let's say I wanted to give each client their own database)? Just trying to get my head round how
SaaS solutions would work. Any tutorials/good reads most welcome!

Actually I came across a few articles talking about Single tenant vs Multi tenant architectures and that's opened up a whole new world for me, exactly what I was looking for. Will read up a bit more on how logic apps work in a single vs. multi-tenant environment.

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}(sorry for editing all the time, I was not really sure what I really wanted to ask until i realised that I had in fact 2 questions at the same time, and still it is hard to explain what I really want to say with it but now the post is relatively final and I will only add small things)
Edited by: kirdie on Jul 7, 2008 2:21 AM
Edited by: kirdie on Jul 7, 2008 2:25 AM
Edited by: kirdie on Jul 7, 2008 2:33 AM
Edited by: kirdie on Jul 7, 2008 2:34 AM

sphinks wrote:
I`m not a guru, but give my point of view. First of all, the first way is rude. You shouldn`t use try with empty catch. "rude" isn't the word I'd use to describe it. Think about what happens if an exception is thrown. How will you know? Your app fails, and you have NO indication as to why. "stupid" or "suicidal" are better descriptions.
Then for the second way, I`ll reccomend for you use not printStackTrace(); , but use special method for it:
public void outputError (Exception e) {
e.printStackTrace();
}It`ll be better just because if in future you`d like to output error message instead of stack of print it on GUI, you`ll need change only one method, but not all 'try' 'catch' statements for changing e.printStackTrace(); with the call of new output method.I disagree with this. Far be it from me to argue against the DRY principle, but I wouldn't code it this way.
I would not recommend exiting from a catch block like that. It's not a strategy for recovery. Just throw the exception.
Then, the third way also good, but I suppose you should use throws only if the caller method should know that called method have a problem (for example, when you read parametrs from gui, so if params are inccorect, main method of programm should know about it and for example show alert window)."throw it everywhere"? No, throw it until you get to an appropriate handler.
If you're writing layered applications - and you should be - you want to identify the layer that will handle the exception. For example, if I'm writing a web app with a view layer, a service layer, and a persistence layer, and there's a problem in the persistence tier, I'd let the service layer know what the persistence exception was. The service layer might translate that into some other exception with some business meaning. The view layer would translate the business exception into something that would be actionable by the user.
And in all other cases I suppose you should use the fourth way. So I suppose it`s better to combine 2,3,4 ways as I have mentioned above.I don't know that I'd recommend special exceptions for every layer. I'd reuse existing classes where I could (e.g., IllegalArgumentException)
Sorry, I can give you advice how to avoid problem with try-catch in constructor. :-(You shouldn't catch anything that you can't handle. If an exception occurs in a constructor that will compromise the object you're trying to create, by all means just throw the exception. No try/catch needed.
You sound like you're looking for a single cookie cutter approach. I'd recommend thinking instead.
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