Jessie (@littlejar) went viral for unveiling her so-called “Men Diagram,” a Venn diagram consisting of three overlapping circles, which is meant to encapsulate all possible types of men, starting with ...
🎯 Interactive node-based diagrams 📊 Multiple diagram views (Architecture, Job Flow, Onboarding, AI Enrichment, Matching) 🔍 Click nodes to see detailed information and prompts 🎨 CreateNew brand ...
Discover more about the many different types of birds found around the world with Cam and Sophie the barn owl from One Zoo Three. What are reptiles? Discover the cold-blooded world of reptiles with ...
Volcanoes can look like small mountains or hills. A volcano is an opening in the Earth's crust that allows magma, hot ash and gases to escape. Composite volcanoes are the most common type of volcano.
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如何构建好实体关系?

更复杂的关系类型还包括:实体发出的关系线环绕回自身时,即形成递归关系。此类关系比想象中更为常见——物料清单便是典型示例:成品由完整清单中的原材料构成,因此所有材料列表最终指向自身。另一例子是员工关系:某员工可同时担任其他员工的经理。一对多关系中,单个员工可管理零到多个员工。