From d36fccebda2ea8ddd296bd140bb54e25d1617818 Mon Sep 17 00:00:00 2001
From: Dimitri Yatsenko <dimitri.yatsenko@gmail.com>
Date: Fri, 14 Aug 2026 16:13:36 -0500
Subject: [PATCH] docs(normalization): illustrate the worked examples with
 dj.Diagram SVGs

Add two generated, theme-adaptive dj.Diagram figures to the normalization
chapter:
- Fully normalized mouse-housing schema (Mouse/Cage entities + CageAssignment/
  MouseWeight event tables; CageAssignment -> Cage shown as a secondary dashed FK).
- Workflow-normalized order schema (Order with dashed secondary refs to Product/
  Customer, then the 1:1 Order -> Payment -> Shipment -> Delivery chain).

Both make the entity-vs-event split and the workflow chain visible. Single-table
examples (denormalized Mouse, Species lookup) are left without diagrams.
---
 src/explanation/normalization.md   |   4 +
 src/images/norm-mouse-housing.svg  | 101 ++++++++++++++++++++++
 src/images/norm-order-workflow.svg | 129 +++++++++++++++++++++++++++++
 3 files changed, 234 insertions(+)
 create mode 100644 src/images/norm-mouse-housing.svg
 create mode 100644 src/images/norm-order-workflow.svg

diff --git a/src/explanation/normalization.md b/src/explanation/normalization.md
index 5e4fd584..19bae464 100644
--- a/src/explanation/normalization.md
+++ b/src/explanation/normalization.md
@@ -215,6 +215,8 @@ class MouseWeight(dj.Manual):
     """
 ```
 
+![Fully normalized mouse-housing schema, left to right: Mouse and Cage as entity tables; CageAssignment and MouseWeight as event tables keyed by date, each depending on Mouse. CageAssignment references Cage as a secondary (dashed) foreign key.](../images/norm-mouse-housing.svg)
+
 This fully normalized design:
 
 - **Intrinsic attributes only** — `Mouse` contains only attributes determined at creation (birth date, sex)
@@ -299,6 +301,8 @@ class Delivery(dj.Manual):
     """
 ```
 
+![Workflow-normalized order schema, left to right: Order (referencing Product and Customer as secondary, dashed foreign keys), then a one-to-one chain Order → Payment → Shipment → Delivery, each step a separate table.](../images/norm-order-workflow.svg)
+
 The foreign keys now form a chain — `Order → Payment → Shipment → Delivery` —
 that is simultaneously the referential-integrity structure and the workflow
 diagram. Every attribute is non-nullable, because a row exists only once its step
diff --git a/src/images/norm-mouse-housing.svg b/src/images/norm-mouse-housing.svg
new file mode 100644
index 00000000..f67860e4
--- /dev/null
+++ b/src/images/norm-mouse-housing.svg
@@ -0,0 +1,101 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN"
+ "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
+<!-- Generated by graphviz version 15.1.0 (20260618.0150)
+ -->
+<!-- Pages: 1 -->
+<svg width="236pt" height="150pt"
+ viewBox="0.00 0.00 236.00 150.00" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+<style>
+@media (prefers-color-scheme: dark) {
+  svg { background-color: #161A21; }
+  polygon[fill="white"] { fill: #161A21; }
+  [fill="#fffde7"] { fill: #3A3620; }
+  [stroke="#c9bc5b"] { stroke: #C9BC5B; }
+  [fill="#6b6420"] { fill: #EBE3A0; }
+  [fill="#e7f3ec"] { fill: #16281F; }
+  [stroke="#2f7d5b"] { stroke: #4FA97F; }
+  [fill="#1b5138"] { fill: #BCE6CF; }
+  [fill="#f2f4f7"] { fill: #242832; }
+  [stroke="#a9b1bd"] { stroke: #8A93A1; }
+  [fill="#495261"] { fill: #C9CFD9; }
+  [fill="#fbeaec"] { fill: #331A1F; }
+  [stroke="#b23a48"] { stroke: #D0687A; }
+  [fill="#7c2430"] { fill: #F3C2CB; }
+  [fill="#e2ecfa"] { fill: #152538; }
+  [stroke="#2a5fa5"] { stroke: #5E92D6; }
+  [fill="#123a6d"] { fill: #C3DAF6; }
+  [fill="#ffffff"] { fill: #1E232C; }
+  [stroke="#9aa6b8"] { stroke: #7B879B; }
+  [fill="#46536b"] { fill: #C4CCDB; }
+  [fill="#edeef0"] { fill: #242730; }
+  [stroke="#808890"] { stroke: #8890A0; }
+  [fill="#404040"] { fill: #C7CDD6; }
+  [stroke="#3a424f"] { stroke: #AEB6C2; stroke-opacity: 0.753; }
+  [stroke="#c77d3a"] { stroke: #D68C4A; stroke-opacity: 0.753; }
+  [fill="#f3f5f8"] { fill: #2A313D; }
+  [stroke="#f3f5f8"] { stroke: #2A313D; }
+  [stroke="gray"] { stroke: #606875; }
+  [fill="gray"] { fill: #8A93A1; }
+}
+</style>
+<g id="graph0" class="graph" transform="scale(1 1) rotate(0) translate(4 146)">
+<polygon fill="white" stroke="none" points="-4,4 -4,-146 231.93,-146 231.93,4 -4,4"/>
+<g id="clust1" class="cluster">
+<title>cluster_cluster_housing</title>
+<path fill="none" stroke="gray" stroke-dasharray="5,2" d="M20,-8C20,-8 207.93,-8 207.93,-8 213.93,-8 219.93,-14 219.93,-20 219.93,-20 219.93,-122 219.93,-122 219.93,-128 213.93,-134 207.93,-134 207.93,-134 20,-134 20,-134 14,-134 8,-128 8,-122 8,-122 8,-20 8,-20 8,-14 14,-8 20,-8"/>
+<text xml:space="preserve" text-anchor="middle" x="168.81" y="-116.7" font-family="Helvetica,sans-Serif" font-size="14.00" fill="gray">norm_housing</text>
+</g>
+<!-- norm_housing.MouseWeight -->
+<g id="node1" class="node">
+<title>norm_housing.MouseWeight</title>
+<g id="a_node1"><a xlink:title="→ norm_housing.Mouse&#13;weigh_date &#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#13;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#13;weight &#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#13;">
+<path fill="#e7f3ec" stroke="#2f7d5b" d="M191.03,-50.28C191.03,-50.28 124.73,-50.28 124.73,-50.28 118.97,-50.28 113.21,-44.52 113.21,-38.76 113.21,-38.76 113.21,-27.24 113.21,-27.24 113.21,-21.48 118.97,-15.72 124.73,-15.72 124.73,-15.72 191.03,-15.72 191.03,-15.72 196.8,-15.72 202.56,-21.48 202.56,-27.24 202.56,-27.24 202.56,-38.76 202.56,-38.76 202.56,-44.52 196.8,-50.28 191.03,-50.28"/>
+<text xml:space="preserve" text-anchor="start" x="121.13" y="-28.98" font-family="Helvetica,sans-Serif" text-decoration="underline" font-size="12.00" fill="#1b5138">MouseWeight</text>
+</a>
+</g>
+</g>
+<!-- norm_housing.CageAssignment -->
+<g id="node2" class="node">
+<title>norm_housing.CageAssignment</title>
+<g id="a_node2"><a xlink:title="→ norm_housing.Mouse&#13;assignment_date &#160;&#160;&#160;&#160;&#160;&#13;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#13;→ norm_housing.Cage&#13;removal_date=null &#160;&#160;&#160;&#13;">
+<path fill="#e7f3ec" stroke="#2f7d5b" d="M200.41,-103.28C200.41,-103.28 115.36,-103.28 115.36,-103.28 109.6,-103.28 103.84,-97.52 103.84,-91.76 103.84,-91.76 103.84,-80.24 103.84,-80.24 103.84,-74.48 109.6,-68.72 115.36,-68.72 115.36,-68.72 200.41,-68.72 200.41,-68.72 206.17,-68.72 211.93,-74.48 211.93,-80.24 211.93,-80.24 211.93,-91.76 211.93,-91.76 211.93,-97.52 206.17,-103.28 200.41,-103.28"/>
+<text xml:space="preserve" text-anchor="start" x="111.76" y="-81.97" font-family="Helvetica,sans-Serif" text-decoration="underline" font-size="12.00" fill="#1b5138">CageAssignment</text>
+</a>
+</g>
+</g>
+<!-- norm_housing.Mouse -->
+<g id="node3" class="node">
+<title>norm_housing.Mouse</title>
+<g id="a_node3"><a xlink:title="mouse_id &#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#13;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#13;date_of_birth &#160;&#160;&#160;&#160;&#160;&#160;&#160;&#13;">
+<path fill="#e7f3ec" stroke="#2f7d5b" d="M56.32,-50.28C56.32,-50.28 27.52,-50.28 27.52,-50.28 21.76,-50.28 16,-44.52 16,-38.76 16,-38.76 16,-27.24 16,-27.24 16,-21.48 21.76,-15.72 27.52,-15.72 27.52,-15.72 56.32,-15.72 56.32,-15.72 62.08,-15.72 67.84,-21.48 67.84,-27.24 67.84,-27.24 67.84,-38.76 67.84,-38.76 67.84,-44.52 62.08,-50.28 56.32,-50.28"/>
+<text xml:space="preserve" text-anchor="start" x="23.92" y="-28.98" font-family="Helvetica,sans-Serif" text-decoration="underline" font-size="12.00" fill="#1b5138">Mouse</text>
+</a>
+</g>
+</g>
+<!-- norm_housing.Mouse&#45;&gt;norm_housing.MouseWeight -->
+<g id="edge1" class="edge">
+<title>norm_housing.Mouse&#45;&gt;norm_housing.MouseWeight</title>
+<path fill="none" stroke="#3a424f" stroke-width="0.75" stroke-opacity="0.619608" d="M68.21,-33C81.33,-33 97.73,-33 112.84,-33"/>
+</g>
+<!-- norm_housing.Mouse&#45;&gt;norm_housing.CageAssignment -->
+<g id="edge2" class="edge">
+<title>norm_housing.Mouse&#45;&gt;norm_housing.CageAssignment</title>
+<path fill="none" stroke="#3a424f" stroke-width="0.75" stroke-opacity="0.619608" d="M68.21,-44.76C83.03,-51.65 102.05,-60.5 118.66,-68.23"/>
+</g>
+<!-- norm_housing.Cage -->
+<g id="node4" class="node">
+<title>norm_housing.Cage</title>
+<g id="a_node4"><a xlink:title="cage_id &#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#13;">
+<path fill="#e7f3ec" stroke="#2f7d5b" d="M52.95,-103.28C52.95,-103.28 30.9,-103.28 30.9,-103.28 25.14,-103.28 19.38,-97.52 19.38,-91.76 19.38,-91.76 19.38,-80.24 19.38,-80.24 19.38,-74.48 25.14,-68.72 30.9,-68.72 30.9,-68.72 52.95,-68.72 52.95,-68.72 58.71,-68.72 64.47,-74.48 64.47,-80.24 64.47,-80.24 64.47,-91.76 64.47,-91.76 64.47,-97.52 58.71,-103.28 52.95,-103.28"/>
+<text xml:space="preserve" text-anchor="start" x="27.3" y="-81.97" font-family="Helvetica,sans-Serif" text-decoration="underline" font-size="12.00" fill="#1b5138">Cage</text>
+</a>
+</g>
+</g>
+<!-- norm_housing.Cage&#45;&gt;norm_housing.CageAssignment -->
+<g id="edge3" class="edge">
+<title>norm_housing.Cage&#45;&gt;norm_housing.CageAssignment</title>
+<path fill="none" stroke="#3a424f" stroke-width="0.75" stroke-dasharray="5,2" stroke-opacity="0.619608" d="M64.89,-86C76.02,-86 90.05,-86 103.78,-86"/>
+</g>
+</g>
+</svg>
diff --git a/src/images/norm-order-workflow.svg b/src/images/norm-order-workflow.svg
new file mode 100644
index 00000000..d32ebaec
--- /dev/null
+++ b/src/images/norm-order-workflow.svg
@@ -0,0 +1,129 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN"
+ "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
+<!-- Generated by graphviz version 15.1.0 (20260618.0150)
+ -->
+<!-- Pages: 1 -->
+<svg width="487pt" height="150pt"
+ viewBox="0.00 0.00 487.00 150.00" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+<style>
+@media (prefers-color-scheme: dark) {
+  svg { background-color: #161A21; }
+  polygon[fill="white"] { fill: #161A21; }
+  [fill="#fffde7"] { fill: #3A3620; }
+  [stroke="#c9bc5b"] { stroke: #C9BC5B; }
+  [fill="#6b6420"] { fill: #EBE3A0; }
+  [fill="#e7f3ec"] { fill: #16281F; }
+  [stroke="#2f7d5b"] { stroke: #4FA97F; }
+  [fill="#1b5138"] { fill: #BCE6CF; }
+  [fill="#f2f4f7"] { fill: #242832; }
+  [stroke="#a9b1bd"] { stroke: #8A93A1; }
+  [fill="#495261"] { fill: #C9CFD9; }
+  [fill="#fbeaec"] { fill: #331A1F; }
+  [stroke="#b23a48"] { stroke: #D0687A; }
+  [fill="#7c2430"] { fill: #F3C2CB; }
+  [fill="#e2ecfa"] { fill: #152538; }
+  [stroke="#2a5fa5"] { stroke: #5E92D6; }
+  [fill="#123a6d"] { fill: #C3DAF6; }
+  [fill="#ffffff"] { fill: #1E232C; }
+  [stroke="#9aa6b8"] { stroke: #7B879B; }
+  [fill="#46536b"] { fill: #C4CCDB; }
+  [fill="#edeef0"] { fill: #242730; }
+  [stroke="#808890"] { stroke: #8890A0; }
+  [fill="#404040"] { fill: #C7CDD6; }
+  [stroke="#3a424f"] { stroke: #AEB6C2; stroke-opacity: 0.753; }
+  [stroke="#c77d3a"] { stroke: #D68C4A; stroke-opacity: 0.753; }
+  [fill="#f3f5f8"] { fill: #2A313D; }
+  [stroke="#f3f5f8"] { stroke: #2A313D; }
+  [stroke="gray"] { stroke: #606875; }
+  [fill="gray"] { fill: #8A93A1; }
+}
+</style>
+<g id="graph0" class="graph" transform="scale(1 1) rotate(0) translate(4 146)">
+<polygon fill="white" stroke="none" points="-4,4 -4,-146 483.45,-146 483.45,4 -4,4"/>
+<g id="clust1" class="cluster">
+<title>cluster_cluster_orders</title>
+<path fill="none" stroke="gray" stroke-dasharray="5,2" d="M20,-8C20,-8 459.45,-8 459.45,-8 465.45,-8 471.45,-14 471.45,-20 471.45,-20 471.45,-122 471.45,-122 471.45,-128 465.45,-134 459.45,-134 459.45,-134 20,-134 20,-134 14,-134 8,-128 8,-122 8,-122 8,-20 8,-20 8,-14 14,-8 20,-8"/>
+<text xml:space="preserve" text-anchor="middle" x="424.82" y="-116.7" font-family="Helvetica,sans-Serif" font-size="14.00" fill="gray">norm_orders</text>
+</g>
+<!-- norm_orders.Customer -->
+<g id="node1" class="node">
+<title>norm_orders.Customer</title>
+<g id="a_node1"><a xlink:title="customer_id &#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#13;">
+<path fill="#e7f3ec" stroke="#2f7d5b" d="M72.07,-50.28C72.07,-50.28 27.52,-50.28 27.52,-50.28 21.76,-50.28 16,-44.52 16,-38.76 16,-38.76 16,-27.24 16,-27.24 16,-21.48 21.76,-15.72 27.52,-15.72 27.52,-15.72 72.07,-15.72 72.07,-15.72 77.83,-15.72 83.59,-21.48 83.59,-27.24 83.59,-27.24 83.59,-38.76 83.59,-38.76 83.59,-44.52 77.83,-50.28 72.07,-50.28"/>
+<text xml:space="preserve" text-anchor="start" x="23.92" y="-28.98" font-family="Helvetica,sans-Serif" text-decoration="underline" font-size="12.00" fill="#1b5138">Customer</text>
+</a>
+</g>
+</g>
+<!-- norm_orders.Order -->
+<g id="node3" class="node">
+<title>norm_orders.Order</title>
+<g id="a_node3"><a xlink:title="order_id &#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#13;order_date &#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#13;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#13;→ norm_orders.Product&#13;→ norm_orders.Customer&#13;">
+<path fill="#e7f3ec" stroke="#2f7d5b" d="M153.91,-76.28C153.91,-76.28 131.11,-76.28 131.11,-76.28 125.35,-76.28 119.59,-70.52 119.59,-64.76 119.59,-64.76 119.59,-53.24 119.59,-53.24 119.59,-47.48 125.35,-41.72 131.11,-41.72 131.11,-41.72 153.91,-41.72 153.91,-41.72 159.67,-41.72 165.43,-47.48 165.43,-53.24 165.43,-53.24 165.43,-64.76 165.43,-64.76 165.43,-70.52 159.67,-76.28 153.91,-76.28"/>
+<text xml:space="preserve" text-anchor="start" x="127.51" y="-54.98" font-family="Helvetica,sans-Serif" text-decoration="underline" font-size="12.00" fill="#1b5138">Order</text>
+</a>
+</g>
+</g>
+<!-- norm_orders.Customer&#45;&gt;norm_orders.Order -->
+<g id="edge1" class="edge">
+<title>norm_orders.Customer&#45;&gt;norm_orders.Order</title>
+<path fill="none" stroke="#3a424f" stroke-width="0.75" stroke-dasharray="5,2" stroke-opacity="0.619608" d="M84.06,-42.53C95.79,-45.9 108.69,-49.59 119.28,-52.63"/>
+</g>
+<!-- norm_orders.Delivery -->
+<g id="node2" class="node">
+<title>norm_orders.Delivery</title>
+<g id="a_node2"><a xlink:title="→ norm_orders.Shipment&#13;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#13;delivery_date &#160;&#160;&#160;&#160;&#160;&#160;&#160;&#13;">
+<path fill="#e7f3ec" stroke="#2f7d5b" d="M451.93,-76.28C451.93,-76.28 414.88,-76.28 414.88,-76.28 409.12,-76.28 403.36,-70.52 403.36,-64.76 403.36,-64.76 403.36,-53.24 403.36,-53.24 403.36,-47.48 409.12,-41.72 414.88,-41.72 414.88,-41.72 451.93,-41.72 451.93,-41.72 457.69,-41.72 463.45,-47.48 463.45,-53.24 463.45,-53.24 463.45,-64.76 463.45,-64.76 463.45,-70.52 457.69,-76.28 451.93,-76.28"/>
+<text xml:space="preserve" text-anchor="middle" x="433.4" y="-53.98" font-family="Helvetica,sans-Serif" font-size="12.00" fill="#1b5138">Delivery</text>
+</a>
+</g>
+</g>
+<!-- norm_orders.Payment -->
+<g id="node4" class="node">
+<title>norm_orders.Payment</title>
+<g id="a_node4"><a xlink:title="→ norm_orders.Order&#13;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#13;payment_date &#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#13;">
+<path fill="#e7f3ec" stroke="#2f7d5b" d="M253,-76.28C253,-76.28 212.95,-76.28 212.95,-76.28 207.19,-76.28 201.43,-70.52 201.43,-64.76 201.43,-64.76 201.43,-53.24 201.43,-53.24 201.43,-47.48 207.19,-41.72 212.95,-41.72 212.95,-41.72 253,-41.72 253,-41.72 258.76,-41.72 264.52,-47.48 264.52,-53.24 264.52,-53.24 264.52,-64.76 264.52,-64.76 264.52,-70.52 258.76,-76.28 253,-76.28"/>
+<text xml:space="preserve" text-anchor="middle" x="232.97" y="-53.98" font-family="Helvetica,sans-Serif" font-size="12.00" fill="#1b5138">Payment</text>
+</a>
+</g>
+</g>
+<!-- norm_orders.Order&#45;&gt;norm_orders.Payment -->
+<g id="edge2" class="edge">
+<title>norm_orders.Order&#45;&gt;norm_orders.Payment</title>
+<path fill="none" stroke="#3a424f" stroke-width="2" stroke-opacity="0.619608" d="M165.83,-59C176.48,-59 189.39,-59 200.97,-59"/>
+</g>
+<!-- norm_orders.Shipment -->
+<g id="node6" class="node">
+<title>norm_orders.Shipment</title>
+<g id="a_node6"><a xlink:title="→ norm_orders.Payment&#13;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#45;&#13;shipment_date &#160;&#160;&#160;&#160;&#160;&#160;&#160;&#13;">
+<path fill="#e7f3ec" stroke="#2f7d5b" d="M355.84,-76.28C355.84,-76.28 312.04,-76.28 312.04,-76.28 306.28,-76.28 300.52,-70.52 300.52,-64.76 300.52,-64.76 300.52,-53.24 300.52,-53.24 300.52,-47.48 306.28,-41.72 312.04,-41.72 312.04,-41.72 355.84,-41.72 355.84,-41.72 361.6,-41.72 367.36,-47.48 367.36,-53.24 367.36,-53.24 367.36,-64.76 367.36,-64.76 367.36,-70.52 361.6,-76.28 355.84,-76.28"/>
+<text xml:space="preserve" text-anchor="middle" x="333.94" y="-53.98" font-family="Helvetica,sans-Serif" font-size="12.00" fill="#1b5138">Shipment</text>
+</a>
+</g>
+</g>
+<!-- norm_orders.Payment&#45;&gt;norm_orders.Shipment -->
+<g id="edge3" class="edge">
+<title>norm_orders.Payment&#45;&gt;norm_orders.Shipment</title>
+<path fill="none" stroke="#3a424f" stroke-width="2" stroke-opacity="0.619608" d="M265.02,-59C276.24,-59 288.94,-59 300.3,-59"/>
+</g>
+<!-- norm_orders.Product -->
+<g id="node5" class="node">
+<title>norm_orders.Product</title>
+<g id="a_node5"><a xlink:title="product_id &#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#13;">
+<path fill="#e7f3ec" stroke="#2f7d5b" d="M66.82,-103.28C66.82,-103.28 32.77,-103.28 32.77,-103.28 27.01,-103.28 21.25,-97.52 21.25,-91.76 21.25,-91.76 21.25,-80.24 21.25,-80.24 21.25,-74.48 27.01,-68.72 32.77,-68.72 32.77,-68.72 66.82,-68.72 66.82,-68.72 72.58,-68.72 78.34,-74.48 78.34,-80.24 78.34,-80.24 78.34,-91.76 78.34,-91.76 78.34,-97.52 72.58,-103.28 66.82,-103.28"/>
+<text xml:space="preserve" text-anchor="start" x="29.17" y="-81.97" font-family="Helvetica,sans-Serif" text-decoration="underline" font-size="12.00" fill="#1b5138">Product</text>
+</a>
+</g>
+</g>
+<!-- norm_orders.Product&#45;&gt;norm_orders.Order -->
+<g id="edge4" class="edge">
+<title>norm_orders.Product&#45;&gt;norm_orders.Order</title>
+<path fill="none" stroke="#3a424f" stroke-width="0.75" stroke-dasharray="5,2" stroke-opacity="0.619608" d="M78.51,-77.75C91.53,-73.88 106.86,-69.31 119.13,-65.66"/>
+</g>
+<!-- norm_orders.Shipment&#45;&gt;norm_orders.Delivery -->
+<g id="edge5" class="edge">
+<title>norm_orders.Shipment&#45;&gt;norm_orders.Delivery</title>
+<path fill="none" stroke="#3a424f" stroke-width="2" stroke-opacity="0.619608" d="M367.67,-59C379.06,-59 391.76,-59 402.88,-59"/>
+</g>
+</g>
+</svg>