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0answers
22 views

Pattern for XPDL import

I am using xml serialization for importing/exporting data from/to xpdl format. And I need a little advice - to what pattern to use. Right now I have 1 huge class for controlling the whole process (it ...
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4answers
69 views

Separation of Concerns While Creating a Generic Concept of a “Cart Item”

Pretty simple setup: I've got a Cart and the cart has Items. I've got many varying types of "products" that can't really be boiled down into one thing or even a common ancestor, so I've instead ...
2
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2answers
155 views

Is there a better way to model a many-to-many relationship on the same table with Entity Framework?

The context We're building a web application using Entity Framework 5.0. One of the requirements is that it should be possible for the administrators to link related products so that when someone ...
5
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1answer
119 views

Text Editor Document Model

I am working on a text editor in javascript. I have created the front end and i need to prototype a backend. I need to model the structure of the document using this as hierarchy: Character , Word ...
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votes
2answers
102 views

Does this situation call for well specified associations, single table inheritance, or polymorphic association?

I'm building a web-app where users can keep track of who owes whom money. I have users and debts. Given a user I want to be able to find out all the debts to other users, and all the loans to other ...
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2answers
119 views

Help to simplify/model complex decision making (if, then, else scenarios)

I find my self in a situation, where I need to program a service, that can determine if two object in a huge database are the same. For simplicity, let's say it's used cars, and I want to determine if ...
5
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0answers
171 views

Can I use Visual Studio 2010 Architectural features to enforce design on code, without feature packs?

I am studying Visual Studio 2010's architectural tools for application lifecycle management. After we have sketched some modeling diagrams, we wonder now how should be the natural workflow to convert ...
0
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1answer
125 views

Is there a way communicate or measure levels of abstraction?

I'll be the first to say that this question is a bit... out there. But here are a couple questions I bear in mind : Is abstraction continuous or discrete? Is there a single unit of abstraction? ...
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2answers
60 views

Advice on reconciling discordant data

Let me support my question with a quick scenario. We're writing an app for family meal planning. We'll produce daily plans with a target calorie goal and meals to achieve it for our nuclear family. ...
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5answers
345 views

Is it Considered Good SQL practice to use GUID to link multiple tables to same Id field?

I want to link several tables to a many-to-many(m2m) table. One table would be called location and this table would always be on one side of the m2m table. But I will have a list of several tables ...
2
votes
2answers
127 views

how to model this relationship ? in ERD

I have three entities : Technician Vehicle Repair The question is how to model this in ERD? Knowing that a technician can repair multiple cars, and the same car can be repaired by one and only one ...
1
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2answers
87 views

How show Attributes which appear In Many To Many association

As we know a many to many association are shown by two asterisks in both end of association. Now I have a association between two entities "Good" and "Invoice" so Good and Invoice have a many to many ...
5
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6answers
419 views

Should a domain expert make class diagrams?

The domain expert in our team uses UML class diagrams to model the domain model. As a result, the class diagrams are more of technical models rather than domain models (it serves of some sort of ...
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vote
1answer
502 views

Is my sequence diagram correct?

NOTE: I am self studying UML so I have nobody to verify my diagrams and hence I am posting here, so please bear with me. This is the problem I got from some PDF available on Google that simply had the ...
1
vote
1answer
450 views

Is my use case diagram correct?

NOTE: I am self studying UML so I have nobody to verify my diagrams and hence I am posting here, so please bear with me. This is the problem I got from some PDF available on Google that simply had the ...

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