A big-picture sketch of how information is organized in a system or business, showing the main ideas and how they relate to each other without getting into technical details
Logical Data Model
An organized map that shows how different pieces of information are related to each other, focusing on the structure and relationships without getting into technical details
Physical Data Model
A detailed plan that shows exactly how data will be stored and accessed in a computer system, including specifics like tables, columns, and data types
Hierarchical Database Model
Information is organized like a tree, with parent-child relationships, where each piece of data has one owner (parent) and can have multiple children, forming a hierarchical structure
Relational Model
Organizes data into tables with rows and columns, like a spreadsheet, where each table represents a specific type of information, and relationships between tables are established using keys
