| # Graphical objects used in the Entity Relationship Model Entity type Entity that represents an object for which you must record information. It can be one of the following: Normal; to represent a Logical entity (has a meaning to the real world and is comprised of one or more physical entity types) or a Physical entity (database tables in the Infor LN applications) Associative; used to link other entity types An entity in a diagram can have a Decomposed diagram linked to it. The graphical object is represented embossed.
| Linked Tables icon | Indicates that a database table is linked to the Entity Type
Relationship (1:n) Represents the relationship between the entity types. The cardinality of the relationship defines the expected number of related occurrences for each of the two entity types. Subtype relationship An indication that the supertype’s attribute also apply to (are inherited by) the subtype Entity Relationship Diagram objects toolbar
Button | Description
| To insert an Entity that represents an object for which you must record information
| To insert a relationship between two entity types
| To insert a subtype relationship between two entity types