Adatréteg

Adatréteg is a Hungarian term that translates to "data layer" in English. In the context of computing and software development, it refers to a conceptual or actual layer within a system's architecture responsible for managing data. This layer often sits between the presentation layer (what the user sees) and the business logic layer (how the application functions).

The primary function of the adatréteg is to handle data storage, retrieval, manipulation, and persistence. This can involve interacting with various data sources such as databases, files, or external APIs. It abstracts the complexities of data access from other parts of the application, allowing them to focus on their specific tasks.

In a typical web application, the adatréteg might be responsible for operations like querying a database for user information, saving new records, updating existing data, or deleting entries. It ensures data integrity and consistency by enforcing rules and handling potential errors during data operations.

The concept of an adatréteg is fundamental to multi-tier or n-tier architectures, promoting modularity, maintainability, and scalability. By separating data concerns into a distinct layer, developers can more easily update or replace the data storage mechanism without significantly impacting the rest of the application. Different technologies and patterns can be employed within the adatréteg, such as Object-Relational Mappers (ORMs) or Data Access Objects (DAOs).