Example

Class

• should start with uppercase name

• made up of attributes and behaviours

Relationships

• shows the relationship between elements

Aggregation

"Is part of"

• shows inheritance link

• depicted with a diamond on subclass side

Generalisation

"Is a type of"

• shows different types of the same class

• depicted as shown below

Association

• link between two element

• depicted with a line, what it does, and directional arrow

Self relationship

• when a class has a relationship with its self

Multiplicities

• shows how many of a class has a relationship with another class

Examples

Note: the bottom two sentences start with the number "one", dunno why thats important but it is so do it!!!