Data Tier

In short: The data tier stores and manages the data of the three-tier architecture.

In more detail: It includes the database, file storage and data access (for example repositories).

In Depth

Rules

The logic tier talks to the data tier, the user interface never directly. This protects data and allows the database to be replaced.

See presentation tier, CRUD.

See also: Database, Logic Tier, Presentation Tier, CRUD