What is Data Layer?
It is the middle layer that allows your application to talk to the database and organizes the data.
Overview
It acts as a translator between the frontend of your application (the screen you see) and the database behind it. It ensures that data is transported safely, accurately and quickly. Using this layer instead of accessing the database directly makes your code cleaner and safer.
How it works
Instead of writing direct database queries to access data, software developers call functions in this layer. So even if the database changes, the rest of your application is not affected.
Where it is used
It is the standard in the architecture of web and mobile applications, especially in large projects.
Commonly confused with
Can be mixed with database; The data layer is not the database, but the method of accessing the database.
Frequently asked questions
Why don't we connect directly?
A layered structure is preferred due to security risks and complexity of the code.
Does it affect performance?
When designed correctly, it improves performance because it can cache data.
Related terms
This explanation was written in plain language for TreScout and machine-translated from the Turkish original · the Turkish version prevails. If something looks wrong or missing, write to hello@trescout.com. Read in Turkish →