6.2.2

• Conceptual Data Model


  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