Questions tagged [data-access-layer]
Data access layer is a layer of a computer program which provides simplified access to data stored in persistent storage of some kind, such as an entity-relational database.
data-access-layer
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C# Winform app - Data Access library method errors on DatabaseProviderFactory().Create("Dataconnectionstring")
I am working with an existing N-Tier designed project, models, business layer, data access and a common library. The solution contains also 2 .NET web applications and I've added a new winform project/...
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Rust, relation DBs - what's the most efficient way to selectively access data in the database?
I have a Rust application connected to the Postgres database.
Let's say I have a users table:
CREATE TABLE users (
id SERIAL PRIMARY KEY,
email VARCHAR NOT NULL UNIQUE,
password_hash ...
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Error code stating "The ObjectContext might be in an inconsistent state."
I am using Visual Studio VB programming against an SQL database utilizing DataAccessLayer & an EDMX file.
.NetFramework 4.0 is a resource being used.
It simply deletes records from a table called ...
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Hibernate: Transactions, Locks and DAO architecture in concurrent environment
Now I have basic DAO interface for Entity object (contextual data actually doesn't matter):
public interface EntityDAO {
CompletableFuture<Void> create(Entity entity);
CompletableFuture&...
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How to use auth policies to exclude some properties on a model when rendering JSON?
I've got some kind of calendar feature in my Laravel app.
Users can have one or more calendars. The owner of a calendar can share it with another user.
If an owner shares a calendar with someone, he ...
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Still using dataset?
I'm a fossil I know. I still use dataset, Datatable, Datarow, Dataview and so on.
Having been around since the VB 4 days, I have seen many different data accesses come and go. I consider the dataset ...
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How can I separate data layer from Next.js API routes?
I am using Next.js with MongoDB, Currently I am using the MongoDB client itself in TypeScript. I was wondering if later on I have to change my database, I need to customize the api/route.ts file.
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React API Internal Endpoint Call is paragraphs long... Better way to do it?
I'm currently working on a React application that's using an internal API endpoint call, which interacts with a DAL layer and writes to a MongoDB hosted online. My issue, I made a less complicated ...
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NestJS - what are the best practices to consider return types of custom queries from the DAL?
I have a project with NestJS where I use the classic controller-service-dal architecture.
Until recently, I performed only simple queries from the DAL which returned the models themselves (or entities ...
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How to add data of one table to another table using Id and display it using .net api
I have 2 tables in my db. One is country table and other is state table.
Country table has Id, name ,states[].
State table has Id, stateName, countryId.
I need to fetch a country details based on Id ...
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what are the consequences if I set the id parameter(in DA layer) to final?
if the id that I get from database won't change during process(which usually don't), why can't I set it final?
and by "can't" I mean I didn't see any software that did it before.
I searched ...
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Is the service layer in my .NET Core/Blazor architecture redundant?
I have a data access layer (a C# library), a .NET Core application that I intend to use as a service and several projects that need to talk to this service, including a Blazor WASM project.
My DAL has ...
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How to split below action method code into separate DAL & BLL in asp.net mvc?
Do you have any suggestions on how one might one split the "action method" (see code below) into a separate DAL and BLL?
public ActionResult GetLogs() {
//set up your connection
...
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DI excpetion for service in api with Data Access Layer
I'm trying to use DI and Access Layer Pattern copying this https://davek.dev/crud-with-mongodb-in-c-and-net-6#heading-service-layer. So my project structure is like this:
where DbAccess Has This ...
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Could my C# method that saves an entity into SQL database return Id of the inserted row? [duplicate]
I'm using IDbConnection interface for saving data into my SQL tables, that has a method called Execute, which executes the query and returns the number of rows affected
I have the following code:
...
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