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02.26.2008 at 08:42AM PST, ID: 23194069
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8.8

Table Structure / Relationship Question

Asked by snyperj in Microsoft Access Database

Please see attached diagram, it is not a real db, but demonstrates a question I have in my app.
How it is used:
An order is entered.  Estimates are then entered for different labor "jobs" that occur in fulfilling the order.  Examples of jobs are: "CUSTOMER VISIT", "DRAWINGS", "SOURCING", "DEVELOPMENT"

Each "job" would only have one estimate per order.  They are stored in T_LABOR_ESTIMATE.

Hours are then recorded against the estimates in T_LABOR_HOURS_ACTUAL.
The hours in this table are summarized and compared back to the estimate.

Here is my question- what is wrong with this table structure as shown.  I know something is wrong because although an order would only have 1 estimate for CUSTOMER VISIT per order, this structure would allow for many CUSTOMER VISIT estimates to be entered for the same order.

What am I missing, what isn't as it should be?

Thanks.
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Attachments:
 
Table Structure
Table Structure
 
 
 
[+][-]02.26.2008 at 08:46AM PST, ID: 20986037

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[+][-]02.26.2008 at 08:54AM PST, ID: 20986129

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[+][-]02.27.2008 at 12:51AM PST, ID: 20992359

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[+][-]02.27.2008 at 09:05AM PST, ID: 20995791

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[+][-]02.27.2008 at 04:31PM PST, ID: 21000202

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Solution Provided By: jefftwilley
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Solution Grade: A
 
 
[+][-]02.27.2008 at 05:15PM PST, ID: 21000473

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