The Hierarchical Database Model organizes data in a tree-like structure, where each record has a single parent and can have multiple children. This model resembles a family tree, with the top-level record known as the root, and each subsequent level representing a more specific subset of data. This structure allows for efficient data retrieval, as relationships between records are clearly defined. In this model, data is accessed through a series of parent-child relationships, making it easy to navigate. However, it can be inflexible, as adding new data types or relationships often requires significant restructuring. Examples of hierarchical databases include IBM's Information Management System (IMS) and Windows Registry.