Entity-relationship diagram

{
  "nodes": [
    { "id":"cus","type":"rounded","label":"Customer","x":40,"y":80,"fill":"#dbeafe","stroke":"#2563eb" },
    { "id":"ord","type":"rounded","label":"Order","x":320,"y":80,"fill":"#dbeafe","stroke":"#2563eb" },
    { "id":"li","type":"rounded","label":"LineItem","x":600,"y":80,"fill":"#dbeafe","stroke":"#2563eb" },
    { "id":"pr","type":"rounded","label":"Product","x":880,"y":80,"fill":"#dbeafe","stroke":"#2563eb" },
    { "id":"in","type":"rounded","label":"Inventory","x":880,"y":260,"fill":"#dbeafe","stroke":"#2563eb" },
    { "id":"cat","type":"parallelogram","label":"id · email · name","x":40,"y":200,"fill":"#fef3c7" },
    { "id":"oat","type":"parallelogram","label":"id · date · total","x":320,"y":200,"fill":"#fef3c7" },
    { "id":"lat","type":"parallelogram","label":"qty · price","x":600,"y":200,"fill":"#fef3c7" },
    { "id":"pat","type":"parallelogram","label":"sku · title · list","x":880,"y":-60,"fill":"#fef3c7" },
    { "id":"iat","type":"parallelogram","label":"on_hand","x":1140,"y":260,"fill":"#fef3c7" }
  ],
  "edges": [
    { "id":"e1","source":"cus","target":"ord","label":"1 — *" },
    { "id":"e2","source":"ord","target":"li","label":"1 — *" },
    { "id":"e3","source":"li","target":"pr","label":"* — 1" },
    { "id":"e4","source":"pr","target":"in","label":"1 — 1" },
    { "id":"e5","source":"cus","target":"cat" },
    { "id":"e6","source":"ord","target":"oat" },
    { "id":"e7","source":"li","target":"lat" },
    { "id":"e8","source":"pr","target":"pat" },
    { "id":"e9","source":"in","target":"iat" }
  ]
}