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From: Lynn on 21 Apr 2010 12:03
Ok sorry i am very new to access. i am trying to create a database for the
small company i work for. We have products that have manufacturer dates. So i
can have one particular product code with many manufacturer or batch dates in
stock. how do i create a table or relationship that shows one product with
many batch dates with quantities? hope this makes since.
From: Steve on 21 Apr 2010 12:13
Something like .......
TblManufacturer
ManufacturerID
ManufacturerName

TblProduct
ProductID
ProductName
ProductCode
ManufacturerID

TblProductInventory
ProductInventoryID
ProductID
ManufacturerDate
QuantityInStock

Steve
santus(a)penn.com


"Lynn" <Lynn(a)discussions.microsoft.com> wrote in message
news:BC302E05-707B-4CA8-8A27-AD70B1AFC952(a)microsoft.com...
> Ok sorry i am very new to access. i am trying to create a database for the
> small company i work for. We have products that have manufacturer dates.
> So i
> can have one particular product code with many manufacturer or batch dates
> in
> stock. how do i create a table or relationship that shows one product with
> many batch dates with quantities? hope this makes since.


From: KenSheridan via AccessMonster.com on 21 Apr 2010 13:37
I assume the products are manufactured by your company rather than purchased
from external suppliers, with each batch of each product having a manufacture
date. If so, tables such as the following can be used:

Products
….ProductID (primary key)
….Product

Batches
….ProductID (foreign key)
….ManufactureDate
….Quantity

The primary key of the Batches table would be a composite one made up of the
ProductID and ManufactureDate columns.

If you also have tables recording sales of products, e.g.

Sales
….SaleID (primary key)
….CustomerID (foreign key)
….SaleDate

SaleDetails
….SaleID (foreign key)
….ProductID (foreign key)
….ManufactureDate (foreign key)
….Quantity

The primary key of this table is a composite one of SaleID, ProductID and
ManufactureDate if a sale can include the same product from more than one
batch, or SaleID and ProductID if from only one batch. Note that ProductID
and ManufactureDate constitute a composite foreign key referencing the
composite primary key of Batches.

Customers
….CustomerID (primary key)
….Customer

The current stock in hand per batch can now be computed with a query which
subtracts the sum of all sales per batch from the sum of the quantity
manufactured per batch:

SELECT Product, ManufactureDate,
SUM(Batches.Quantity) - SUM(SaleDetails.Quantity) AS StockInHand
FROM Products, Batches, SaleDetails
WHERE Batches.ProductID = Products.ProductID
AND SaleDetails.ProductID = Batches.ProductID
AND SaleDetails.ManufactureDate = Batches.ManufactureDate
GROUP BY Product, ManufactureDate;

If you are not discriminating between batches in sales then the stock in hand
per product can be computed by a similar query which subtracts the sum of all
sales per product from the sum of the quantity manufactured per product:

SELECT Product,
SUM(Batches.Quantity) - SUM(SaleDetails.Quantity) AS StockInHand
FROM Products, Batches, SaleDetails
WHERE Batches.ProductID = Products.ProductID
AND SaleDetails.ProductID = Batches.ProductID
GROUP BY Product;

Ken Sheridan
Stafford, England

Lynn wrote:
>Ok sorry i am very new to access. i am trying to create a database for the
>small company i work for. We have products that have manufacturer dates. So i
>can have one particular product code with many manufacturer or batch dates in
>stock. how do i create a table or relationship that shows one product with
>many batch dates with quantities? hope this makes since.

--
Message posted via AccessMonster.com
http://www.accessmonster.com/Uwe/Forums.aspx/access-gettingstarted/201004/1

From: KenSheridan via AccessMonster.com on 21 Apr 2010 13:46
Come to think of it the first query, to compute the stock in hand per batch,
doesn't need to sum the quantity per batch as this is a single value per
batch, so:

SELECT Product, ManufactureDate,
Batches.Quantity - SUM(SaleDetails.Quantity) AS StockInHand
FROM Products, Batches, SaleDetails
WHERE Batches.ProductID = Products.ProductID
AND SaleDetails.ProductID = Batches.ProductID
AND SaleDetails.ManufactureDate = Batches.ManufactureDate
GROUP BY Product, ManufactureDate, Batches.Quantity;

Ken Sheridan
Stafford, England

--
Message posted via http://www.accessmonster.com

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