[{"title":"(3个子文件7.14MB)(数据库系统概论学习指导与习题解答(王珊+第四版)PDF完整版+word.rar)","children":[{"title":"数据库系统概论(第四版)学习指导与习题解答.pdf <span style='color:#111;'>388.86KB</span>","children":null,"spread":false},{"title":"数据库系统概论(第四版)学习指导与习题解答.doc <span style='color:#111;'>270.00KB</span>","children":null,"spread":false},{"title":"数据库系统概论学习指导与习题解答.pdf <span style='color:#111;'>8.42MB</span>","children":null,"spread":false}],"spread":true}]