{"resolved":true,"match_type":"uuid","source_type":"original_book","book_id":"0f4df77e-fbc5-46b5-aca2-e27886d75b12","title":"论数码物的存在","author":null,"edition":null,"publisher":null,"year":null,"isbn":"9787208154346","requested_by":"printed_page","book":{"source_type":"original_book","book_id":"0f4df77e-fbc5-46b5-aca2-e27886d75b12","id":"0f4df77e-fbc5-46b5-aca2-e27886d75b12","uuid":"0f4df77e-fbc5-46b5-aca2-e27886d75b12","title":"论数码物的存在","normalized_title":"论数码物的存在","author":null,"edition":null,"publisher":null,"year":null,"isbn":"9787208154346","isbns":["9787208154346"],"parsed":true,"ai_readable":true,"document_type":"book","page_count":317,"navigation_url":"https://workshop.closeclaw.top/ai/book/0f4df77e-fbc5-46b5-aca2-e27886d75b12","title_url":"https://workshop.closeclaw.top/ai/title/%E8%AE%BA%E6%95%B0%E7%A0%81%E7%89%A9%E7%9A%84%E5%AD%98%E5%9C%A8","fixed_page_url_template":"https://workshop.closeclaw.top/ai/book/0f4df77e-fbc5-46b5-aca2-e27886d75b12/page/{printed_page}","path_api_url_template":"https://workshop.closeclaw.top/api/ai/book/0f4df77e-fbc5-46b5-aca2-e27886d75b12/page/{printed_page}","read_url":"https://workshop.closeclaw.top/api/ai/read/0f4df77e-fbc5-46b5-aca2-e27886d75b12","page_url":"https://workshop.closeclaw.top/api/ai/books/0f4df77e-fbc5-46b5-aca2-e27886d75b12/page","search_url":"https://workshop.closeclaw.top/api/ai/books/0f4df77e-fbc5-46b5-aca2-e27886d75b12/search"},"page":{"printed_page":245,"pdf_page":255,"physical_index":255,"physical_index_base":0,"printed_page_status":"recognized","page_sha256":"d35a08b1a69e541b874fe7354dfdc3926336d5ad0ef12978e2f750978d8efcd6"},"chapter":"第一章数码物的起源","content":"认识论)，25。\n\n[49] Sloterdijk and Heinrichs, Die Sonne und der Tod(太阳与死亡),137—139。\n\n[52] Ibid., section 29.\n\n[53]元组字面意思是一组变量，例如(植物，动物),(3,5)。元组关系演算基于指定一系列关系范围内的元组变量。可以用一个简单的例子来说明。考虑一家公司，在其关系数据库中具有以下信息：雇员(SSN、姓名、生日、地址、薪水、部门标识)；元组关系演算的查询就如“查找所有薪水高于30000的员工”或{t|t雇员∧t.薪水>30.000}。\n\n[54]域关系演算使用从属性域获取值的域变量(而不是元组)。考虑我们在上一个脚注中使用的相同示例：查找薪水大于30000的所有雇员，或{<id，n，b，a，s，d>|<id，n,b，a，s，d>雇员∧s>30.000}。\n\n[55] Ellul, Technological System, 102.\n\n第一章数码物的起源\n\n[1] Haynes, Visa Takes to Second Life.\n\n[2]http://www.etymonline.com/.\n\n注释\n\n259\n\n245","previous_page":244,"next_page":246}