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class="chartlet-focus"><summary>Focus</summary><fieldset><label><input type="radio" name="chartlet-6dde3ab5de8f2092-focus" checked> Show all</label><label><input type="radio" name="chartlet-6dde3ab5de8f2092-focus" class="chartlet-focus-node" id="chartlet-6dde3ab5de8f2092-focus-0"> Customer</label><label><input type="radio" name="chartlet-6dde3ab5de8f2092-focus" class="chartlet-focus-node" id="chartlet-6dde3ab5de8f2092-focus-1"> Order</label><label><input type="radio" name="chartlet-6dde3ab5de8f2092-focus" class="chartlet-focus-node" id="chartlet-6dde3ab5de8f2092-focus-2"> Invoice</label><label><input type="radio" name="chartlet-6dde3ab5de8f2092-focus" class="chartlet-focus-node" id="chartlet-6dde3ab5de8f2092-focus-3"> InvoiceLine</label><label><input type="radio" name="chartlet-6dde3ab5de8f2092-focus" class="chartlet-focus-node" id="chartlet-6dde3ab5de8f2092-focus-4"> TaxRate</label><label><input type="radio" name="chartlet-6dde3ab5de8f2092-focus" class="chartlet-focus-node" id="chartlet-6dde3ab5de8f2092-focus-5"> Reminder</label></fieldset></details><figure class="chartlet-figure" data-viz="chart"><figcaption>Orders and their invoices</figcaption><div class="chartlet-stage"><svg xmlns="http://www.w3.org/2000/svg" width="900" height="760" viewBox="0 0 900 760" id="chartlet-6dde3ab5de8f2092" role="img" aria-labelledby="chartlet-6dde3ab5de8f2092-title chartlet-6dde3ab5de8f2092-description" class="chartlet-root"><title id="chartlet-6dde3ab5de8f2092-title">Orders and their invoices</title><desc id="chartlet-6dde3ab5de8f2092-description">Class diagram with 6 classes and 5 relations in 2 packages. Sales: Customer, Order. Billing: Invoice, InvoiceLine, TaxRate. Most connected: Invoice (3 connections). Bottleneck: Invoice; without it the diagram falls apart. Customer: 2 attributes, 0 methods. Customer is associated with Order (1 : 0..*) [places]. Order: 2 attributes, 1 method. Order is associated with Invoice (1 : 1..*) [billed as]. Invoice: 2 attributes, 1 method. Invoice is composed of InvoiceLine (1 : 1..*) [lists]; is associated with Reminder (1 : 0..3) [dunned by]. InvoiceLine: 2 attributes, 0 methods. InvoiceLine is associated with TaxRate (* : 1) [taxed at]. TaxRate: 2 attributes, 0 methods. 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.chartlet-flow-open{fill:none;stroke:var(--chartlet-zero);stroke-width:1.4;stroke-linejoin:round}</style><rect x="376.2" y="12" width="147.6" height="303.641" class="chartlet-flow-group"/><text x="384.2" y="25" text-anchor="start" class="chartlet-flow-group-label">Sales</text><g class="chartlet-f chartlet-f-0 chartlet-f-1"><polyline points="450,114 450,202.641" class="chartlet-flow-edge"><title>Customer → Order: places</title></polyline><text x="438" y="198.641" text-anchor="end" class="chartlet-flow-card">0..*</text><text x="438" y="126" text-anchor="end" class="chartlet-flow-card">1</text></g><g class="chartlet-f chartlet-f-1 chartlet-f-2"><polyline points="450,303.641 450,389.278 234.42,389.278 234.42,425.335 234.42,453.335" class="chartlet-flow-edge"><title>Order → Invoice: billed as</title></polyline><text x="222.42" y="449.335" text-anchor="end" class="chartlet-flow-card">1..*</text><text x="438" y="315.641" text-anchor="end" class="chartlet-flow-card">1</text></g><g class="chartlet-f chartlet-f-2 chartlet-f-5"><polyline points="234.42,554.335 234.42,566.335 234.42,633.943 450,633.943 450,670" class="chartlet-flow-edge"><title>Invoice → Reminder: dunned by</title></polyline><text x="438" y="666" text-anchor="end" class="chartlet-flow-card">0..3</text><text x="222.42" y="566.335" text-anchor="end" class="chartlet-flow-card">1</text></g><g class="chartlet-f chartlet-n-0 chartlet-f-0 chartlet-f-1"></g><g class="chartlet-f chartlet-n-1 chartlet-f-0 chartlet-f-1 chartlet-f-2"></g><g class="chartlet-f chartlet-n-5 chartlet-f-2 chartlet-f-5"></g><g class="chartlet-f chartlet-f-0 chartlet-f-1"><rect x="454" y="119" width="47.2" height="21" class="chartlet-diagram-chip"/><text x="459" y="133" text-anchor="start" class="chartlet-diagram-chip-text">places</text></g><g class="chartlet-f chartlet-f-1 chartlet-f-2"><rect x="454" y="318.641" width="58.24" height="21" class="chartlet-diagram-chip"/><text x="459" y="332.641" text-anchor="start" class="chartlet-diagram-chip-text">billed as</text></g><g class="chartlet-f chartlet-f-2 chartlet-f-5"><rect x="162.82" y="571.335" width="67.6" height="21" class="chartlet-diagram-chip"/><text x="225.42" y="585.335" text-anchor="end" class="chartlet-diagram-chip-text">dunned by</text></g><g class="chartlet-f chartlet-n-0 chartlet-f-0 chartlet-f-1"><rect x="394.26" y="42.5" width="111.48" height="74" class="chartlet-diagram-shadow"/><rect x="394.26" y="40" width="111.48" height="74" class="chartlet-flow-node chartlet-role-blue chartlet-class"><title>Customer</title></rect><text x="450" y="66" text-anchor="middle" class="chartlet-flow-label">Customer</text><line x1="394.26" y1="72" x2="505.74" y2="72" class="chartlet-flow-inner"/><text x="406.26" y="89" text-anchor="start" class="chartlet-class-member">+ id: Int</text><text x="406.26" y="104" text-anchor="start" class="chartlet-class-member">+ name: String</text></g><g class="chartlet-f chartlet-n-1 chartlet-f-0 chartlet-f-1 chartlet-f-2"><rect x="388.2" y="205.141" width="123.6" height="101" class="chartlet-diagram-shadow"/><rect x="388.2" y="202.641" width="123.6" height="101" class="chartlet-flow-node chartlet-role-blue chartlet-class"><title>Order</title></rect><text x="450" y="228.641" text-anchor="middle" class="chartlet-flow-label">Order</text><line x1="388.2" y1="234.641" x2="511.8" y2="234.641" class="chartlet-flow-inner"/><text x="400.2" y="251.641" text-anchor="start" class="chartlet-class-member">+ id: Int</text><text x="400.2" y="266.641" text-anchor="start" class="chartlet-class-member">+ placedAt: Date</text><line x1="388.2" y1="276.641" x2="511.8" y2="276.641" class="chartlet-flow-inner"/><text x="400.2" y="293.641" text-anchor="start" class="chartlet-class-member">+ total(): Money</text></g><rect x="159.96" y="425.335" width="580.08" height="141" class="chartlet-flow-group"/><text x="167.96" y="438.335" text-anchor="start" class="chartlet-flow-group-label">Billing</text><g class="chartlet-f chartlet-f-2 chartlet-f-3"><polyline points="312.88,503.835 378.24,503.835" class="chartlet-flow-edge"><title>Invoice → InvoiceLine: lists</title></polyline><text x="370.24" y="495.835" text-anchor="start" class="chartlet-flow-card">1..*</text><polyline points="296.88,503.835 304.88,498.835 312.88,503.835 304.88,508.835 296.88,503.835" class="chartlet-flow-head chartlet-flow-solid"/><text x="320.88" y="495.835" text-anchor="start" class="chartlet-flow-card">1</text></g><g class="chartlet-f chartlet-f-3 chartlet-f-4"><polyline points="487.92,503.835 592.8,503.835" class="chartlet-flow-edge"><title>InvoiceLine → TaxRate: taxed at</title></polyline><text x="584.8" y="495.835" text-anchor="start" class="chartlet-flow-card">1</text><text x="495.92" y="495.835" text-anchor="start" class="chartlet-flow-card">*</text></g><g class="chartlet-f chartlet-n-2 chartlet-f-1 chartlet-f-2 chartlet-f-3 chartlet-f-5"></g><g class="chartlet-f chartlet-n-3 chartlet-f-2 chartlet-f-3 chartlet-f-4"></g><g class="chartlet-f chartlet-n-4 chartlet-f-3 chartlet-f-4"></g><g class="chartlet-f chartlet-f-2 chartlet-f-3"><rect x="300.88" y="478.835" width="37.36" height="21" class="chartlet-diagram-chip"/><text x="305.88" y="492.835" text-anchor="start" class="chartlet-diagram-chip-text">lists</text></g><g class="chartlet-f chartlet-f-3 chartlet-f-4"><rect x="491.92" y="478.835" width="60.88" height="21" class="chartlet-diagram-chip"/><text x="496.92" y="492.835" text-anchor="start" class="chartlet-diagram-chip-text">taxed at</text></g><g class="chartlet-f chartlet-n-2 chartlet-f-1 chartlet-f-2 chartlet-f-3 chartlet-f-5"><rect x="171.96" y="455.835" width="124.92" height="101" class="chartlet-diagram-shadow"/><rect x="171.96" y="453.335" width="124.92" height="101" class="chartlet-flow-node chartlet-role-blue chartlet-class"><title>Invoice</title></rect><text x="234.42" y="479.335" text-anchor="middle" class="chartlet-flow-label">Invoice</text><line x1="171.96" y1="485.335" x2="296.88" y2="485.335" class="chartlet-flow-inner"/><text x="183.96" y="502.335" text-anchor="start" class="chartlet-class-member">+ number: String</text><text x="183.96" y="517.335" text-anchor="start" class="chartlet-class-member">+ issuedAt: Date</text><line x1="171.96" y1="527.335" x2="296.88" y2="527.335" class="chartlet-flow-inner"/><text x="183.96" y="544.335" text-anchor="start" class="chartlet-class-member">+ total(): Money</text></g><g class="chartlet-f chartlet-n-3 chartlet-f-2 chartlet-f-3 chartlet-f-4"><rect x="378.24" y="469.335" width="109.68" height="74" class="chartlet-diagram-shadow"/><rect x="378.24" y="466.835" width="109.68" height="74" class="chartlet-flow-node chartlet-role-blue chartlet-class"><title>InvoiceLine</title></rect><text x="433.08" y="492.835" text-anchor="middle" class="chartlet-flow-label">InvoiceLine</text><line x1="378.24" y1="498.835" x2="487.92" y2="498.835" class="chartlet-flow-inner"/><text x="390.24" y="515.835" text-anchor="start" class="chartlet-class-member">+ quantity: Int</text><text x="390.24" y="530.835" text-anchor="start" class="chartlet-class-member">+ net: Money</text></g><g class="chartlet-f chartlet-n-4 chartlet-f-3 chartlet-f-4"><rect x="592.8" y="469.335" width="135.24" height="74" class="chartlet-diagram-shadow"/><rect x="592.8" y="466.835" width="135.24" height="74" class="chartlet-flow-node chartlet-role-blue chartlet-class"><title>TaxRate</title></rect><text x="660.42" y="492.835" text-anchor="middle" class="chartlet-flow-label">TaxRate</text><line x1="592.8" y1="498.835" x2="728.04" y2="498.835" class="chartlet-flow-inner"/><text x="604.8" y="515.835" text-anchor="start" class="chartlet-class-member">+ code: String</text><text x="604.8" y="530.835" text-anchor="start" class="chartlet-class-member">+ percent: Decimal</text></g><g class="chartlet-f chartlet-n-5 chartlet-f-2 chartlet-f-5"><rect x="394.08" y="672.5" width="111.84" height="74" class="chartlet-diagram-shadow"/><rect x="394.08" y="670" width="111.84" height="74" class="chartlet-flow-node chartlet-role-blue chartlet-class"><title>Reminder</title></rect><text x="450" y="696" text-anchor="middle" class="chartlet-flow-label">Reminder</text><line x1="394.08" y1="702" x2="505.92" y2="702" class="chartlet-flow-inner"/><text x="406.08" y="719" text-anchor="start" class="chartlet-class-member">+ level: Int</text><text x="406.08" y="734" text-anchor="start" class="chartlet-class-member">+ sentAt: Date</text></g></svg><label class="chartlet-hotspot" id="chartlet-6dde3ab5de8f2092-hs-0" for="chartlet-6dde3ab5de8f2092-focus-0"></label><label class="chartlet-hotspot" id="chartlet-6dde3ab5de8f2092-hs-1" for="chartlet-6dde3ab5de8f2092-focus-1"></label><label class="chartlet-hotspot" id="chartlet-6dde3ab5de8f2092-hs-2" for="chartlet-6dde3ab5de8f2092-focus-2"></label><label class="chartlet-hotspot" id="chartlet-6dde3ab5de8f2092-hs-3" for="chartlet-6dde3ab5de8f2092-focus-3"></label><label class="chartlet-hotspot" id="chartlet-6dde3ab5de8f2092-hs-4" for="chartlet-6dde3ab5de8f2092-focus-4"></label><label class="chartlet-hotspot" id="chartlet-6dde3ab5de8f2092-hs-5" for="chartlet-6dde3ab5de8f2092-focus-5"></label></div><p class="chartlet-source">Source: Illustrative domain model</p><details class="chartlet-data" data-viz-text><summary>Show chart data</summary><table><caption>Data for Orders and their invoices</caption><thead><tr><th scope="col">Item</th><th scope="col">Kind</th><th scope="col">Package</th><th scope="col">Attributes</th><th scope="col">Methods</th><th scope="col">Relations</th></tr></thead><tbody><tr><th scope="row">Customer</th><td>Class</td><td>Sales</td><td>+ id: Int; + name: String</td><td></td><td>is associated with Order (1 : 0..*) [places]</td></tr><tr><th scope="row">Order</th><td>Class</td><td>Sales</td><td>+ id: Int; + placedAt: Date</td><td>+ total(): Money</td><td>is associated with Invoice (1 : 1..*) [billed as]</td></tr><tr><th scope="row">Invoice</th><td>Class</td><td>Billing</td><td>+ number: String; + issuedAt: Date</td><td>+ total(): Money</td><td>is composed of InvoiceLine (1 : 1..*) [lists]; is associated with Reminder (1 : 0..3) [dunned by]</td></tr><tr><th scope="row">InvoiceLine</th><td>Class</td><td>Billing</td><td>+ quantity: Int; + net: Money</td><td></td><td>is associated with TaxRate (* : 1) [taxed at]</td></tr><tr><th scope="row">TaxRate</th><td>Class</td><td>Billing</td><td>+ code: String; + percent: Decimal</td><td></td><td></td></tr><tr><th scope="row">Reminder</th><td>Class</td><td></td><td>+ level: Int; + sentAt: Date</td><td></td><td></td></tr></tbody></table></details></figure></div>