data-layers

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How do I seperate my SQL and Business Logic in this example?

I have been looking for help online on how to design my php classes to separate my business logic and my data layers. I had started to design a class I thought was pretty cool but then discovered PDO[详细]

2023-03-10 05:36 分类：问答
N-Tier - responsbility location for insert vs update

I\'m creating an application which is split into a Data Layer (using repository pattern & EF 4.0), a Business layer (POCO\'s with开发者_C百科 additional logic) and a Service Layer (which is expose[详细]

2023-03-04 23:30 分类：问答
so many data access options, what to use?

I am an asp.net web application developer and I always have used Enterprise Library DAAB with stored procedures for data access with 4 seprate layers (presentation layer, custom types layer, business[详细]

2023-01-12 09:22 分类：问答
How Exceptions are handled while designing DataLayer or any other layered architecture

I am creating a data access layer where I want to handle exceptions that should be catched by Business layer with clear idea of the source of exception.[详细]

2023-01-06 05:50 分类：问答
Designing DAOs around a JSON API for iPhone Development

So I\'ve been trying to design a clean way of grabbing data for my models in iPhone land. All the data for my application is coming from JSON API\'s.[详细]

2023-01-04 05:59 分类：问答
IQueryable and lazy loading

I\'m having a hard time determining the best way to handle this...With Entity Framework (and L2S), LINQ queries return IQueryable.I have read various opinions on whether the DAL/BLL should return IQue[详细]

2022-12-29 06:31 分类：问答
CLR Stored Procedures

In an ASP.NET application, I have a small number of fairly complex, frequently used operations to execute against a database. In these operations, one or more of several tables needs updates or insert[详细]

2022-12-23 14:16 分类：问答
Business layer, data layer, where to put queries?

I have a data access layer that has separate classes for each table in the database. Each class makes objects that reference a row in the table, they have create, update, delete, and fetch functions.[详细]

2022-12-10 06:35 分类：问答