{"type":"link","version":"1.0","title":"作者引用 LinkedIn… · On keys, essences and… | HotDaily","description":"作者引用 LinkedIn 原文：“实际数据... 可能没有关系模型所需的自然键... 数据域难以明确定义... 立法常禁止存储键...…","url":"https://hotdaily.top/item/6ac11bc4-a089-4bde-9fb0-7a22e40abc40","provider_name":"HotDaily","provider_url":"https://hotdaily.top","thumbnail_url":"https://hotdaily.top/og.png","thumbnail_width":1200,"thumbnail_height":630}