You can create the following objects in a logical diagram:
|
Object |
Tool |
Symbol |
Description |
|---|---|---|---|
|
Domain |
[none] |
[none] |
Set of values for which a data item is valid. See Domains (CDM/LDM/PDM). |
|
Entity |
 |
 |
Person, place, thing, or concept that is of interest to the enterprise. See Entities (CDM/LDM). |
|
Entity Attribute |
[none] |
[none] |
Elementary piece of information attached to an entity. See Attributes (CDM/LDM). |
|
Identifier |
[none] |
[none] |
One or many entity attributes, whose values uniquely identify each occurrence of the entity. See Identifiers (CDM/LDM). |
|
Relationship |
 |
 |
Named connection or relation between entities (ER modeling methodology). See Relationships (CDM/LDM). |
|
n-n Relationship |
 |
 |
[LDM only] Named cardinality represented with an intermediary entity. See Relationships (CDM/LDM). |
|
Inheritance |
 |
 |
Relationship that defines an entity as a special case of a more general entity. See Inheritances (CDM/LDM). |