Data Binding

Data binding is the mechanism that connects data from a data source/model with UI elements or another representation so that values can be displayed or updated automatically.

Types

• One-way binding: Data flows in one direction, such as model → view.
• Two-way binding: Changes in the model can update the view, and user changes in the view can update the model.

Example concept

Suppose a model contains:

name = "Ravi"

A bound text field displays Ravi. If two-way binding is used and the user changes the field to Aman, the model can also be updated to Aman.

Advantages

1. Reduces repetitive UI update code.
2. Keeps displayed data synchronized with application state.
3. Improves maintainability of data-driven interfaces.

Conclusion: Data binding establishes a relationship between application data and the user interface, with one-way or two-way synchronization depending on the framework/design.