: Represented as diamonds or connecting lines, these show how entities interact (e.g., a Customer "places" an Order ).
: Adds more detail, defining attributes and keys but remaining independent of a specific database technology.
: Represented as rectangles, these are the "nouns" of the system, such as Customer , Order , or Product .
: They act as a blueprint for developers to build the actual physical database.
: Represented as diamonds or connecting lines, these show how entities interact (e.g., a Customer "places" an Order ).
: Adds more detail, defining attributes and keys but remaining independent of a specific database technology.
: Represented as rectangles, these are the "nouns" of the system, such as Customer , Order , or Product .
: They act as a blueprint for developers to build the actual physical database.
