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Software Business Logic Help

Hello there,

I have a frame which shows the users a list of products and the available qty in the warehouse of the main branch. now the user will can enter the qty it wants to send to another branch office. I need to then update the MBranchProductQty table accordingly. can somebody please help me to achieve this in the best way.see attachement for more details. I am using sql server 2008 as db and GWT for development.

cheers
Zolf
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zolf
Asked:
zolf
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2 Solutions
 
Vadim RappCommented:
Since you posted this question under "business logic", rather than, say, "database design"", I will say this: you don't want to update product qty when the user only indicated that he wants to transfer. You should update it only when it has been actually received in the destination. The best is to have yet another location called "in transit", so you first move to "in transit", and then to the destination. Only that allows to tell where the stuff is.
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zolfAuthor Commented:
thanks for your comments.
Another problem I have is how do I update that product in that MBranchProductQty table. I mean I need to reduce the qty once it is gone out of that warehouse. Do I create a new record in that table or some other method which you know of.
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David ToddSenior DBACommented:
Hi,

The thought is that something like this:

Create another location called - In Transit.

The transaction is in GL terms:
Credit source location
Debit In Transit.

When stock arrives,
Credit In Transit
Debit destination location.

HTH
  David
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zolfAuthor Commented:
David, thanks for your comments.

what do you mean by another location.do you mean table or column. can you please explain in more details with reference to the tables I have.
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Vadim RappCommented:
It all depends on the meanings of the columns in your table(s), and how they are used by your applications.
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David ToddSenior DBACommented:
Hi

By another location I'm assuming that you have a table of locations warehouse1/damaged goods/pick face/bulk/etc.

Add another location at that point.

I've supported a system that had physical warehouses and then under than logical warehouses. The transfer between logical warehouses in the same physical location should be immediate. The transfer between physical sites should go via in-transit.

HTH
  David
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