use plantuml in Mac
Install Graphviz
brew install Graphviz
export GRAPHVIZ_DOT=/usr/local/Cellar/graphviz/2.40.1/bin/dot
Download plantuml.jar
wget https://nchc.dl.sourceforge.net/project/plantuml/plantuml.jar
Make dir and a UML text file:
mkdir ~/Downloads/uml
vi ~/Downloads/uml/test.txt
@startuml
!define SEQUENCE (S,#AAAAAA) Database Sequence
!define TABLE (T,#FFAAAA) Database Table
class USER << TABLE >>
class ACCOUNT << TABLE >>
class UID << SEQUENCE >>
USER "1" -- "*" ACCOUNT
USER -> UID
@enduml
Run: