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2answers
76 views

Business Layer in Database logic system

Background:I'm a not very experienced software developer, currently working on a legacy project where all the business logic is in the database(sqlserver) using stored procedures. Now we are asked to ...
2
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2answers
62 views

How to avoid code duplication or cascaded changes and major refactoring in business logic layer?

Let's say, I have created a business logic layer service (or a handler in Command/Query pattern) with a method DoSomething which processes a bunch of entities and stores them in database. Later on, ...
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3answers
93 views

Storing Business Logic in Tables rather than Stored Procedure or Application

The requirement is that once the product has been delivered, user can update the logic as he wants. An example of logic I have is follows- An institute teaches English has following requirements - ...
1
vote
1answer
150 views

REST is not appropriate for business applications because of necessary to distribute business logic accross layers. REST alternative required!

I have Spring+Java Server Faces (Facelets) application for which I would like to create Single Page Application (SPA) version, e.g. using AngularJS (which is the best and most popular GUI framework). ...
43
votes
6answers
3k views

Business logic: Database vs code [duplicate]

I'm a student of systems engineering, and all my teachers and friends (that actually work in the area) say that it is better to have as much logic as possible implemented in the database (queries, ...
5
votes
1answer
78 views

Optimistic rendering imposes duplication of logic?

If you're working on a client side mobile application, for a smoother UX, optimistic rendering is encouraged. This is where the application makes UI updates based on user requests that get sent to the ...
1
vote
3answers
134 views

What should be in my business logic class

We are currently having an internal debate on how our business logic classes should be structured. At the moment we structure our business classes like this: public class OrderBL { public void ...
1
vote
1answer
53 views

business rules, business proceses and business logic

I am not 100% sure of the meaning of these terms. Is a business process a flow in an application? (e.g. creating an invoice) Are business rules parts of a business process? and, are business processes ...
0
votes
0answers
101 views

Rearchitecture: EF Core as DAL, how should my BLL look like?

A little background: Our system consists of a DB in SQL Server, a DAL layer using EF 6 (Database First, with a monstrous .edmx), a Web API 2 and MVC 5. The DB is very, very old and wasn't designed ...
4
votes
1answer
122 views

Increase code duplication to simplify business rules in views

I am in the process of writing a Ruby on Rails web application for my university's department. For some of our resources in the web application, e.g. Project, are complex with their view layer logic: ...
4
votes
2answers
71 views

Branching and Merging Business Data

We're working on a project wherein the business users operate on a set of data that is periodically published. We've labeled the publishing milestones as Versions, and, due to some business ...
-3
votes
1answer
76 views

What is the best approach to compare data in a database? [closed]

I am going to ask some random questions from hundreds of them to my users and the answers can be only "true" or "false". Then I am going to record those answers into my database and lastly I am going ...
2
votes
4answers
123 views

Can someone give me a good definition of the term “business logic”? [duplicate]

I kind of get what it means, but not enough to explain it by myself. Is a key concept when talking about the MVC pattern and it's giving me problems to explain that concept too.
2
votes
3answers
182 views

Enforce uniqueness of personal contact records in a system or not? [closed]

I have a contact table which stores all the contact information of a person such as name, address, phone number. The system would be more user friendly if it can prevent users from accidentally ...
2
votes
1answer
171 views

Business logic in the models?

I use the repository pattern for data handling. In my DAL folder i have IUserRepository, UserRepository and UserContext. Inside the models folder i have a class called User like id, username etc. I ...
1
vote
2answers
286 views

How to write highly changeable, highly complex software? [closed]

I know questions like this has been asked before. But none of them truly answered me. How to keep a big and complex software product maintainable over the years? How do you organize highly customized ...
1
vote
1answer
130 views

Where to put common business logic in DDD with MVC

Providing I have the following scenario: I have a Web application where users can deposit money to their accounts (wire transfer). When a user deposits money to their account, they should click the "...
3
votes
1answer
168 views

Is it always possible to separate multiple conditions in an IF statement into individual statements?

I'm trying to find the simplest way to model user-defined conditional statements without resorting to text parsing. This is fairly easy when there is only one condition in the statement because you ...
2
votes
2answers
219 views

Designing voucher system in e-commerce application

I'm currently designing voucher system to be implemented in our company e-commerce application. I'm currently have voucher table in database which contains following information : Unique voucher ...
1
vote
1answer
98 views

What are potential problems when write business logic code in GUI as MVVM pattern

Currently, I'm implementing MVVM pattern for a WPF application but not 100% no code behind, sometimes I put some business logic code into GUI and so what are potential problems for this? Thanks
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vote
4answers
226 views

What is the difference between business and application logic? [closed]

Please note that I asked the same question on stackoverflow but they directed me to ask here. While I am trying to discerne the difference between the application logic and business logic I have ...
0
votes
1answer
86 views

What to do about complex business logic based on many options

To preface, I think this problem would be easier to understand if I gave an example: How does a complex tax evaluation application manage multiple tax laws and personal situations? I inherited a web ...
3
votes
1answer
115 views

Business concept design vs logical database design

Good day. I need help for a specific case. A little background: We have an existing app, it is like a PDF viewer, and you can draw freehand, highlight, add highlight with notes, add action items, etc. ...
3
votes
1answer
311 views

How to handle custom logic for multiple customers

We got a project where we have to process certain requests which the customer sends. The request is either in a generic format or in a customer format (all xml) which is then converted to the generic ...
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votes
1answer
220 views

Put Business Logic and Model Declaration in Different DLL [closed]

I am new to MVC and started working on a small application. I have a basic idea about what to do and want to use MVC and EntityFramework. I want to create a separate Business Layer. I want to put ...
0
votes
1answer
168 views

Where should the following business logic be written?

I have a C# console application. This application has many different projects/C# class files, each of them dedicated to parsing a certain kind of XML and creating an object, called 'Response'. Now, ...
2
votes
1answer
142 views

Encapsulating business logic that goes beyond validations in MVC

I'm pretty clear business logic goes into Models. But on this question, they refer to business logic as pretty much low level validation (if the user signs up, ask for their e-mail). What about ...
4
votes
2answers
883 views

Is it a good practice to burn business logic into Enums?

Let's have a simplified business logic like this: public enum BusinessLogic { STAGE_ONE(true, false, false), STAGE_TWO(true, true, false), STAGE_THREE(false, false, true); private final ...
8
votes
2answers
628 views

How much logic can be put into a command? Or differently: What kind of logic is command pattern for?

I have been using the command pattern for quite some time but I'm never really sure how much logic I can actually put in the Execute method. My current implementation of the command pattern looks ...
0
votes
2answers
169 views

Implement a virtual tag on the database level

I have a set of objects, for which users manually applied tags, whatever they invented. I'd like to implement a task engine, where each task might be applied to objects from a tag. For convenience, I'...
18
votes
2answers
1k views

What does “business logic” actually mean if not “all non-3rd party code”?

I've heard people talk about business logic a lot at work, and online, and I've read several questions on this site about it, but the term still doesn't make a lot of sense to me. For example, here ...
5
votes
3answers
425 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 ...
4
votes
3answers
3k 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 ...
8
votes
4answers
696 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 ...
3
votes
1answer
233 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 ...
1
vote
1answer
127 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 ...
2
votes
1answer
258 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 ...
4
votes
1answer
803 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? ...
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2answers
2k 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 ...
5
votes
6answers
1k 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
3answers
8k 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 ...
1
vote
1answer
255 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 ...
1
vote
2answers
660 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 ...
1
vote
1answer
578 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 ...
2
votes
4answers
311 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 ...
2
votes
2answers
388 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 ...
18
votes
6answers
2k 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 ...
2
votes
3answers
1k 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 ...
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vote
3answers
1k 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
222 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 ...