Proper UI for Hierarchical Data Entry

1. What is UI hierarchy?
2. How do we display hierarchical relationship in data?
3. What are the 4 levels in data hierarchy?

What is UI hierarchy?

Visual hierarchy is a concept that allows a user to process information in a specific order. Its function in Interface Design (UI) is to facilitate the understanding of information by the user.

How do we display hierarchical relationship in data?

Adjacency List is a design method for implementing hierarchical data. It's achieved by storing the ID of the related record on the desired record. You add one column to your table, and set it as a foreign key to the same table's primary key.

What are the 4 levels in data hierarchy?

Computer Data Hierarchy: Bits, Characters, fields, records, files, database bigdata.