The tag has no wiki summary.

learn more… | top users | synonyms

-3
votes
0answers
30 views

Which Rule engine should be used in a Java environment? [closed]

Im looking to create/use a rule engine. The problem is to choose which one needs to be used. Drools seems to be the most comprehensive rule engine in the market. The requirements and the rules and ...
1
vote
1answer
187 views

Data model for persisting queries to database

I have been asked to build what is essentially a query builder for a reporting application. The variety of objects to query, potential modifiers, number of conditions, and so forth to be reported on ...
19
votes
6answers
5k views

How much business logic should the database implement?

I've worked in some projects where most of the business logic was implemented on the database (mostly through stored procedures). On the other side, I've heard from some fellow programmers that this ...
23
votes
5answers
4k views

Do stored procedures violate three-tier separation?

Some colleagues of mine have told me that having business logic in stored procedures in the database violates the three-tier separation, since the database belongs to the data layer whereas stored ...
2
votes
2answers
169 views

Separation of retrieving data and business objects between DAL and BLL Layers

I did some research before posting this question. Among other questions or post, one of those is provided below. I could not get a clear mind how to determine.. Business Objects within a Data Access ...
4
votes
3answers
107 views

Should access logic go in controllers?

I want to know if all the logic related to permissions and access control belongs to controllers (Application logic) or models (Business logic). Currently I have a controller that does something like ...
3
votes
3answers
835 views

Entirely separate business logic layer from MVC

We are currently refactoring our controller methods in ASP.NET MVC application. At the beginning we've separated data access layer (our goal was to remove LINQ from controllers entirely). Now we are ...
3
votes
1answer
109 views

Difference between patterns: Specification, Guarding, Conditions, Monads, Validation,

I'm currently trying to get my head around a few patterns (especially the ones mentioned in the title above) that are made to address different problems and are being used in different parts of the ...
8
votes
4answers
372 views

What exactly is a business rule? [duplicate]

I'm trying to better organize my application architecture, so I've been doing some reading, but I keep running into references to "Business Logic" and "Business Rules". I've never really understood ...
9
votes
3answers
786 views

What is the object-oriented thought process? [closed]

I've been studying OOP in conjunction with Zend's MVC implementation for the past few months. I'm pretty new to programming, generally, but I feel strongly that I should learn things the 'right' way, ...
1
vote
1answer
87 views

When is it acceptable for business logic to be exposed on distributed applications?

When developing applications (for simplicity, use a client-server model) intended to be deployed on customer systems, when it is acceptable to expose business logic outside of compiled code (for ...
3
votes
1answer
210 views

Project structure: where to put business logic

First of all, I'm not asking where does business logic belong. This has been asked before and most answers I've read agree in that it belongs in the model: Where to put business logic in MVC design? ...
0
votes
0answers
33 views

Product Configuration with conditional options

Suppose you need to create a website where you can choose a Widget, and then configure all of the various options to go with that widget. The options have many interactions. For example, if you ...
1
vote
2answers
276 views

Describe business logic with diagrams

I am currently developing a web application for my thesis.I was asked by my professor to make diagrams to describe the business logic. Since I don't have a prior experience, I am pretty confused with ...
2
votes
4answers
890 views

Architecture strategies for a complex competition scoring system

Competition description: There are about 10 teams competing against each other over a 6-week period. Each team's total score (out of a 1000 total available points) is based on the total of its ...
5
votes
6answers
443 views

Desktop to Web - How to deal with user-interactive workflows

I start a new project this summer, consisting in developing a web version of a proprietary desktop ERP. The main goal of my company is to be able to propose a web version of its ERP, with all ...
3
votes
2answers
372 views

where exactly should python business logic be placed in django

I have just begun to learn Django/Python/Web Development. This problem has been troubling me for a while now. I am creating an application with multiple templates in Django. I have a views.py which ...
2
votes
3answers
631 views

design practice for business layer when supporting API versioning

Is there any design pattern or practice recommended for business layer when dealing with multiple API version. For example, I have something like this. http://site.com/blogs/v1/?count=10 which ...
1
vote
1answer
224 views

Confused about implementing Single Responsibility Principle

Please bear with me if the question looks not well structured. To put you in the context of my issue: I am building an application that invoices vehicles stay duration in a parking. In addition to ...
2
votes
4answers
234 views

At what point does data access\manipulation logic becomes business logic?

Consider a service which updates PersonDetail tables in database. I am Using EF which maps the table to this Entity. When a record is updated, it is not actually updated but a new record is created ...
1
vote
1answer
293 views

MVC & 3 tier architecture in game - What is the business layer

I am making a game and have been following examples which use the MVC architecture pattern. I am now trying to get my head around how this would fit in with a 3-tier architecture. From what I have ...
20
votes
3answers
14k views

Where to put business logic in MVC design?

I have created a simple MVC Java application that adds records through data forms to a database. My app collects data, it also validates it and stores it. This is because the data is being sourced ...
2
votes
5answers
6k views

Business Logic Layer in MVC Application

In my ASP MVC application I decided to add another Business Layer and made the model only to have properties. All other functionality like save to db, get from db is done on this new Business layer. ...
2
votes
2answers
229 views

Implementing bussiness logic with a large number of business rules and processes

We are currently working on a project that heavily relies on a database. Among many tables the main focus is on table "data" which is linked to another table "data_type" as many-to-one, which is then ...
1
vote
1answer
162 views

Class Design for special business rules

I'm developing an application that allows people to place custom manufacturing orders. However, while most require similar paperwork, some of them have custom paperwork that only they require. My ...
17
votes
6answers
1k views

What is an example of a computationally impossible business problem?

I have coworker who refuses to accept the reality that Turing machines (and Von Neuman machines by extension) cannot solve their own halting problem stating: You can do anything with enough time ...
0
votes
3answers
3k views

The best possible way to implement Business Rules in PHP

I'm planning to write an e-commerce app using PHP & MySQL with lots & lots of custom rules. Say for example, I want to have a rule like "Give Customer X, a 10% a discount for Product Y if he ...
2
votes
3answers
490 views

DAL vs BLL functions' return types

Here is how I see the main differences between the DAL and the BLL: The DAL directly query the database. The DAL doesn't create new information. It may execute complex sql requests, joining several ...
1
vote
2answers
457 views

How can I write complex validation and business logic that can be reused in both direct data model changes and pending dialog changes?

I was hoping for some advice: I need to design a software solution for a medium-sized java / Swing application. The application will have about 200 use cases requiring complex data validation and ...
0
votes
1answer
140 views

Queries in three tier architecture

I am wondering where should the DB queries need to be in the three tier architecture. The first association that think is in the DAL. But then if the BL want to search for an object, the DAL need to ...
4
votes
2answers
298 views

What layer to introduce human readable error messages?

One of the things that I have never been happy with on any project I have worked on over the years and have really not been able to resolve myself is exactly at what tier in an application should ...
1
vote
0answers
13 views

How to educate business managers on the complexity of adding new features? [duplicate]

We maintain a web application for a client who demands that new features be added at a breakneck pace. We've done our best to keep up with their demands, and as a result the code base has grown ...
4
votes
2answers
560 views

Domain Logic in Service Layer exposed as WCF service

I am designing an enterprise solution which consists of modularized products within a product range using Entity Framework code first to define the domain model and provide the data access. e.g. ...
13
votes
3answers
356 views

How to educate business managers on the complexity of adding new features? [duplicate]

We maintain a web application for a client who demands that new features be added at a breakneck pace. We've done our best to keep up with their demands, and as a result the code base has grown ...
0
votes
3answers
392 views

How do I create a simple yet complex business layer?

I'm working with a fairly complex web application. It's split up into the following layers: Presentation - HTML Service layer - A REST and SOAP API communicating with the business layer Business ...
1
vote
2answers
273 views

How to deal with system “static” data in java

I was just wondering if there is some better way how to handle system "static" configuration data. Let say you have a system which offers several operation which are in code translated to operation ...
14
votes
2answers
460 views

Pair programming business logic with a non-IT person

Have you had any experience in which a non-IT person works with a programmer during the coding process? It's like pair programming, but one person is a non-IT person that knows a lot about the ...
22
votes
4answers
18k views

Why put the business logic in the model? What happens when I have multiple types of storage?

I always thought that the business logic has to be in the controller and that the controller, since it is the 'middle' part, stays static and that the model/view have to be capsuled via interfaces. ...
1
vote
2answers
511 views

Converting Business Process Maps into Software

I am fairly new to web application development. I have defined my problem domain through talking to various stakeholders and putting a process map together - basically a flow chart showing the ...
18
votes
7answers
699 views

Business Objects - Containers or functional?

This is a question I asked a while back on SO, but it may get discussed better here... Where I work, we've gone back and forth on this subject a number of times and are looking for a sanity check. ...
3
votes
2answers
1k views

What is the relationship between the business logic layer and the data access layer?

I'm working on an MVC-ish app (I'm not very experienced with MVC, hence the "-ish"). My model and data access layer are hard to test because they're very tightly coupled, so I'm trying to uncouple ...
1
vote
1answer
544 views

Sample domain model for online store

We are a group of 4 software development students currently studying at the Cape Peninsula University of Technology. Currently, we are tasked with developing a web application that functions as a ...
5
votes
4answers
2k views

How should UI layer pass user input to BL layer?

I'm building an n-tier application, I have UI, BL, DAL & Entities (built from POCO) projects. (All projects have a reference to the Entities). My question is - how should I pass user input from ...
0
votes
6answers
2k views

When to use the 3 layers model?

I was recently exposed to the three layer model (DAL,BL,UI). Someone told me I should ALWAYS work with this model. I have a medium project that I'm starting and I have doubts whether I should build ...
0
votes
1answer
352 views

Implementing a “state-machine” logic for methods required by an object in C++

What I have: 1 hypothetical object/class + other classes and related methods that gives me functionality. What I want: linking this object to 0 to N methods in realtime on request when an event is ...
3
votes
1answer
213 views

Logic required to solve a problem relating to location of objects

I have raised a question on dba.stackexchange.com but as the heart of my question is in fact to do with logic I have raised a more general representation of my issue here. I think it is the right ...
2
votes
2answers
531 views

Adding dynamic business logic/business process checks to a system

I'm wondering if there is a good extant pattern (language here is Python/Django but also interested on the more abstract level) for creating a business logic layer that can be created without coding. ...
3
votes
1answer
222 views

Seperating business logic and layout in a highly interlocked project

My company is developing software that has a lot of technical debt that has existed for more than 20 years. It's a mix of C++ and C and consists of about 2M LOC. I would like to make some suggestions ...
5
votes
3answers
1k views

Thick models Vs. Business Logic, Where do you draw the distinction?

Today I got into a heated debate with another developer at my organization about where and how to add methods to database mapped classes. We use sqlalchemy, and a major part of the existing code base ...
3
votes
3answers
228 views

What are the pros and cons of implementing this requirement in different layers?

I have a CRUD app for <DomainObject>s. They are persisted in a database. There is a new requirement: keep track of the <DomainObject>s that have been created since the app was opened, ...