er diagram designer

er diagram creator | | vertical

# define your er diagram here :)
#
# python syntax highlighting works well
# for this format, if you want to edit
# the diagram in a fancy text editor.

# an entity.
def Label():

# an entity with attributes.
def Item(_Id, Name, Type):
  x = 700
  y = 400

# an entity with only a key attribute
def Box(_Id, Capacity):
  w = 120
  h = 60
  # a relation using n:m notation.
  # `(,)` will be displayed as `,`.
  Item(1, contains, n)
  # a relation in both directions,
  # using min-max and n:m notation.
  Label((1,1), has, (0,1), 1, is on, 1)

# config options: [what.]option[/mod]
seed = changeme
background = transparent
text-color = light-dark(black, white)
shape-color = light-dark(#CCC, #333)
border-color = light-dark(black, white)
line-color = light-dark(black, white)
attribute.border-color = #808080
keyattribute.border-color = light-dark(black, white)
keyattribute.border-dashed = true
keyattribute.text-underlined = true
font-size = 12
entity.font-size/scale = 1.5
attribute.font-size/scale = 1
relation.font-size/scale = 0.9
relationtext.font-size/scale = 0.8
# seed, background, text-color,
# shape-color, border-color, line-color,
# border-dashed, text-underlined,
# font-size
# /export: used when exporting svg
# /scale: multiplies option by factor
# attribute (keyattribute), entity,
# relation (relationtext, relationnum)