[
  {
    "file": "01-01-5bJsWFufup.png",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/782/5bJsWFufup.png",
    "lesson": "课程内容提要",
    "chapterId": "161777",
    "lesson_url": "https://wangxiao.xisaiwang.com/nstu/sub/databank/bookDetail/bookDetail?ebookId=10794&chapterId=161777&nextPaperName=%E3%80%902026%E7%89%88%E6%9C%AC%E3%80%91%E8%BD%AF%E4%BB%B6%E8%AE%BE%E8%AE%A1%E5%B8%88%E8%80%83%E8%AF%95%E7%B2%BE%E8%AE%B2%E7%8F%AD%E8%A7%86%E9%A2%91%E6%95%99%E7%A8%8B%E8%AE%B2%E4%B9%89%E7%94%B5%E5%AD%90%E7%89%88&detailId=10794",
    "width": 841,
    "height": 797,
    "sha256": "033b6b27e65f68a16f92ed6bd2bf4ef663a0b86cb35f7005f345eec1c2e86cfd",
    "bytes": 59482
  },
  {
    "file": "02-01-2GHEBm9bFW.png",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/610/2GHEBm9bFW.png",
    "lesson": "数据库体系结构",
    "chapterId": "161779",
    "lesson_url": "https://wangxiao.xisaiwang.com/nstu/sub/databank/bookDetail/bookDetail?ebookId=10794&chapterId=161779&nextPaperName=%E3%80%902026%E7%89%88%E6%9C%AC%E3%80%91%E8%BD%AF%E4%BB%B6%E8%AE%BE%E8%AE%A1%E5%B8%88%E8%80%83%E8%AF%95%E7%B2%BE%E8%AE%B2%E7%8F%AD%E8%A7%86%E9%A2%91%E6%95%99%E7%A8%8B%E8%AE%B2%E4%B9%89%E7%94%B5%E5%AD%90%E7%89%88&detailId=10794",
    "width": 956,
    "height": 402,
    "sha256": "7737331a82335f179b3a37789749c1d96f6c517ed805f3e48ab1921682c54e4c",
    "bytes": 57481
  },
  {
    "file": "02-02-55XPmasDHW.png",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/135/55XPmasDHW.png",
    "lesson": "数据库体系结构",
    "chapterId": "161779",
    "lesson_url": "https://wangxiao.xisaiwang.com/nstu/sub/databank/bookDetail/bookDetail?ebookId=10794&chapterId=161779&nextPaperName=%E3%80%902026%E7%89%88%E6%9C%AC%E3%80%91%E8%BD%AF%E4%BB%B6%E8%AE%BE%E8%AE%A1%E5%B8%88%E8%80%83%E8%AF%95%E7%B2%BE%E8%AE%B2%E7%8F%AD%E8%A7%86%E9%A2%91%E6%95%99%E7%A8%8B%E8%AE%B2%E4%B9%89%E7%94%B5%E5%AD%90%E7%89%88&detailId=10794",
    "width": 974,
    "height": 472,
    "sha256": "614d1b8aa76e8514e28cc30ecc0b83cef736967d884a10e11d5cbd34f92fed4e",
    "bytes": 101513
  },
  {
    "file": "03-01-sVUNnZRvg0.png",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/917/sVUNnZRvg0.png",
    "lesson": "数据仓库",
    "chapterId": "161780",
    "lesson_url": "https://wangxiao.xisaiwang.com/nstu/sub/databank/bookDetail/bookDetail?ebookId=10794&chapterId=161780&nextPaperName=%E3%80%902026%E7%89%88%E6%9C%AC%E3%80%91%E8%BD%AF%E4%BB%B6%E8%AE%BE%E8%AE%A1%E5%B8%88%E8%80%83%E8%AF%95%E7%B2%BE%E8%AE%B2%E7%8F%AD%E8%A7%86%E9%A2%91%E6%95%99%E7%A8%8B%E8%AE%B2%E4%B9%89%E7%94%B5%E5%AD%90%E7%89%88&detailId=10794",
    "width": 826,
    "height": 418,
    "sha256": "68767f371e07060fe66614b2f377fa9d8fdb59cffe94844e90a6b9b32d5e9398",
    "bytes": 69583
  },
  {
    "file": "04-01-PczjN3QBRA.png",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/216/PczjN3QBRA.png",
    "lesson": "数据库设计",
    "chapterId": "161781",
    "lesson_url": "https://wangxiao.xisaiwang.com/nstu/sub/databank/bookDetail/bookDetail?ebookId=10794&chapterId=161781&nextPaperName=%E3%80%902026%E7%89%88%E6%9C%AC%E3%80%91%E8%BD%AF%E4%BB%B6%E8%AE%BE%E8%AE%A1%E5%B8%88%E8%80%83%E8%AF%95%E7%B2%BE%E8%AE%B2%E7%8F%AD%E8%A7%86%E9%A2%91%E6%95%99%E7%A8%8B%E8%AE%B2%E4%B9%89%E7%94%B5%E5%AD%90%E7%89%88&detailId=10794",
    "width": 856,
    "height": 458,
    "sha256": "0c307509988ef4ccbc2a2007752bda5f6ee6e0f4a53b73a8d52df4d703ed2aa4",
    "bytes": 64640
  },
  {
    "file": "04-02-8Xf4VXYuXv.png",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/513/8Xf4VXYuXv.png",
    "lesson": "数据库设计",
    "chapterId": "161781",
    "lesson_url": "https://wangxiao.xisaiwang.com/nstu/sub/databank/bookDetail/bookDetail?ebookId=10794&chapterId=161781&nextPaperName=%E3%80%902026%E7%89%88%E6%9C%AC%E3%80%91%E8%BD%AF%E4%BB%B6%E8%AE%BE%E8%AE%A1%E5%B8%88%E8%80%83%E8%AF%95%E7%B2%BE%E8%AE%B2%E7%8F%AD%E8%A7%86%E9%A2%91%E6%95%99%E7%A8%8B%E8%AE%B2%E4%B9%89%E7%94%B5%E5%AD%90%E7%89%88&detailId=10794",
    "width": 979,
    "height": 306,
    "sha256": "78ce1db19f0364b8275591ae672744adb6861eaa95eb666961e5430e5e9369d9",
    "bytes": 25958
  },
  {
    "file": "04-03-AGnNmgZjW9.png",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/4/AGnNmgZjW9.png",
    "lesson": "数据库设计",
    "chapterId": "161781",
    "lesson_url": "https://wangxiao.xisaiwang.com/nstu/sub/databank/bookDetail/bookDetail?ebookId=10794&chapterId=161781&nextPaperName=%E3%80%902026%E7%89%88%E6%9C%AC%E3%80%91%E8%BD%AF%E4%BB%B6%E8%AE%BE%E8%AE%A1%E5%B8%88%E8%80%83%E8%AF%95%E7%B2%BE%E8%AE%B2%E7%8F%AD%E8%A7%86%E9%A2%91%E6%95%99%E7%A8%8B%E8%AE%B2%E4%B9%89%E7%94%B5%E5%AD%90%E7%89%88&detailId=10794",
    "width": 408,
    "height": 292,
    "sha256": "a3d93af370d0947392555db6f62355594fd7053a222b38e0531ccaa605c86c6f",
    "bytes": 25229
  },
  {
    "file": "04-04-7MygNYRRM8.png",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/306/7MygNYRRM8.png",
    "lesson": "数据库设计",
    "chapterId": "161781",
    "lesson_url": "https://wangxiao.xisaiwang.com/nstu/sub/databank/bookDetail/bookDetail?ebookId=10794&chapterId=161781&nextPaperName=%E3%80%902026%E7%89%88%E6%9C%AC%E3%80%91%E8%BD%AF%E4%BB%B6%E8%AE%BE%E8%AE%A1%E5%B8%88%E8%80%83%E8%AF%95%E7%B2%BE%E8%AE%B2%E7%8F%AD%E8%A7%86%E9%A2%91%E6%95%99%E7%A8%8B%E8%AE%B2%E4%B9%89%E7%94%B5%E5%AD%90%E7%89%88&detailId=10794",
    "width": 436,
    "height": 242,
    "sha256": "fa32c54f244b998aa69a9d4892c4c976a81099e8301c1be8c56f59e76578dbe5",
    "bytes": 13606
  },
  {
    "file": "04-05-LCX2waMz8V.png",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/662/LCX2waMz8V.png",
    "lesson": "数据库设计",
    "chapterId": "161781",
    "lesson_url": "https://wangxiao.xisaiwang.com/nstu/sub/databank/bookDetail/bookDetail?ebookId=10794&chapterId=161781&nextPaperName=%E3%80%902026%E7%89%88%E6%9C%AC%E3%80%91%E8%BD%AF%E4%BB%B6%E8%AE%BE%E8%AE%A1%E5%B8%88%E8%80%83%E8%AF%95%E7%B2%BE%E8%AE%B2%E7%8F%AD%E8%A7%86%E9%A2%91%E6%95%99%E7%A8%8B%E8%AE%B2%E4%B9%89%E7%94%B5%E5%AD%90%E7%89%88&detailId=10794",
    "width": 466,
    "height": 214,
    "sha256": "20fd5a7511b2018bb68cc270b7b8c1935c33fa8139a6c43af7d78010db16180a",
    "bytes": 31693
  },
  {
    "file": "04-06-rjpzc2jjej.png",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/531/rjpzc2jjej.png",
    "lesson": "数据库设计",
    "chapterId": "161781",
    "lesson_url": "https://wangxiao.xisaiwang.com/nstu/sub/databank/bookDetail/bookDetail?ebookId=10794&chapterId=161781&nextPaperName=%E3%80%902026%E7%89%88%E6%9C%AC%E3%80%91%E8%BD%AF%E4%BB%B6%E8%AE%BE%E8%AE%A1%E5%B8%88%E8%80%83%E8%AF%95%E7%B2%BE%E8%AE%B2%E7%8F%AD%E8%A7%86%E9%A2%91%E6%95%99%E7%A8%8B%E8%AE%B2%E4%B9%89%E7%94%B5%E5%AD%90%E7%89%88&detailId=10794",
    "width": 811,
    "height": 191,
    "sha256": "bcb0195119e403da592cfbff3522c2ae1966969c07a235ca2489253c1e6509bf",
    "bytes": 16134
  },
  {
    "file": "04-07-sEaxUujta1.png",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/827/sEaxUujta1.png",
    "lesson": "数据库设计",
    "chapterId": "161781",
    "lesson_url": "https://wangxiao.xisaiwang.com/nstu/sub/databank/bookDetail/bookDetail?ebookId=10794&chapterId=161781&nextPaperName=%E3%80%902026%E7%89%88%E6%9C%AC%E3%80%91%E8%BD%AF%E4%BB%B6%E8%AE%BE%E8%AE%A1%E5%B8%88%E8%80%83%E8%AF%95%E7%B2%BE%E8%AE%B2%E7%8F%AD%E8%A7%86%E9%A2%91%E6%95%99%E7%A8%8B%E8%AE%B2%E4%B9%89%E7%94%B5%E5%AD%90%E7%89%88&detailId=10794",
    "width": 553,
    "height": 100,
    "sha256": "81a3dfc6f7a83003260298344babc4ce0dd7c96e14dc445f0a09f3dda0114ff1",
    "bytes": 9785
  },
  {
    "file": "04-08-kkHqbHYrB3.png",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/136/kkHqbHYrB3.png",
    "lesson": "数据库设计",
    "chapterId": "161781",
    "lesson_url": "https://wangxiao.xisaiwang.com/nstu/sub/databank/bookDetail/bookDetail?ebookId=10794&chapterId=161781&nextPaperName=%E3%80%902026%E7%89%88%E6%9C%AC%E3%80%91%E8%BD%AF%E4%BB%B6%E8%AE%BE%E8%AE%A1%E5%B8%88%E8%80%83%E8%AF%95%E7%B2%BE%E8%AE%B2%E7%8F%AD%E8%A7%86%E9%A2%91%E6%95%99%E7%A8%8B%E8%AE%B2%E4%B9%89%E7%94%B5%E5%AD%90%E7%89%88&detailId=10794",
    "width": 919,
    "height": 342,
    "sha256": "6dbfc5f0dd4e9a67f3f67bc3f7590422290ecc9285f2f423c006754f96c6979f",
    "bytes": 32707
  },
  {
    "file": "04-09-u6BA6k27k6.png",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/639/u6BA6k27k6.png",
    "lesson": "数据库设计",
    "chapterId": "161781",
    "lesson_url": "https://wangxiao.xisaiwang.com/nstu/sub/databank/bookDetail/bookDetail?ebookId=10794&chapterId=161781&nextPaperName=%E3%80%902026%E7%89%88%E6%9C%AC%E3%80%91%E8%BD%AF%E4%BB%B6%E8%AE%BE%E8%AE%A1%E5%B8%88%E8%80%83%E8%AF%95%E7%B2%BE%E8%AE%B2%E7%8F%AD%E8%A7%86%E9%A2%91%E6%95%99%E7%A8%8B%E8%AE%B2%E4%B9%89%E7%94%B5%E5%AD%90%E7%89%88&detailId=10794",
    "width": 934,
    "height": 127,
    "sha256": "9db10a6dd9ab27063cbb25cf37f19e927c0f33012af523937a2b5b3905bd7aab",
    "bytes": 16283
  },
  {
    "file": "04-10-kNVRD72PQ2.png",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/478/kNVRD72PQ2.png",
    "lesson": "数据库设计",
    "chapterId": "161781",
    "lesson_url": "https://wangxiao.xisaiwang.com/nstu/sub/databank/bookDetail/bookDetail?ebookId=10794&chapterId=161781&nextPaperName=%E3%80%902026%E7%89%88%E6%9C%AC%E3%80%91%E8%BD%AF%E4%BB%B6%E8%AE%BE%E8%AE%A1%E5%B8%88%E8%80%83%E8%AF%95%E7%B2%BE%E8%AE%B2%E7%8F%AD%E8%A7%86%E9%A2%91%E6%95%99%E7%A8%8B%E8%AE%B2%E4%B9%89%E7%94%B5%E5%AD%90%E7%89%88&detailId=10794",
    "width": 667,
    "height": 280,
    "sha256": "130f67cb6207e06a9ac51dc1c2e75e137a1f1e7236aa7cf0661c2e2ce0c0932d",
    "bytes": 21026
  },
  {
    "file": "04-11-SZKwKZtRt2.png",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/117/SZKwKZtRt2.png",
    "lesson": "数据库设计",
    "chapterId": "161781",
    "lesson_url": "https://wangxiao.xisaiwang.com/nstu/sub/databank/bookDetail/bookDetail?ebookId=10794&chapterId=161781&nextPaperName=%E3%80%902026%E7%89%88%E6%9C%AC%E3%80%91%E8%BD%AF%E4%BB%B6%E8%AE%BE%E8%AE%A1%E5%B8%88%E8%80%83%E8%AF%95%E7%B2%BE%E8%AE%B2%E7%8F%AD%E8%A7%86%E9%A2%91%E6%95%99%E7%A8%8B%E8%AE%B2%E4%B9%89%E7%94%B5%E5%AD%90%E7%89%88&detailId=10794",
    "width": 537,
    "height": 224,
    "sha256": "565c1abc5f70844299a9dbda293c54ae5a21703058a63b5ddb3a2f84375ff0d3",
    "bytes": 14352
  },
  {
    "file": "04-12-P93HvLmzhr.png",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/646/P93HvLmzhr.png",
    "lesson": "数据库设计",
    "chapterId": "161781",
    "lesson_url": "https://wangxiao.xisaiwang.com/nstu/sub/databank/bookDetail/bookDetail?ebookId=10794&chapterId=161781&nextPaperName=%E3%80%902026%E7%89%88%E6%9C%AC%E3%80%91%E8%BD%AF%E4%BB%B6%E8%AE%BE%E8%AE%A1%E5%B8%88%E8%80%83%E8%AF%95%E7%B2%BE%E8%AE%B2%E7%8F%AD%E8%A7%86%E9%A2%91%E6%95%99%E7%A8%8B%E8%AE%B2%E4%B9%89%E7%94%B5%E5%AD%90%E7%89%88&detailId=10794",
    "width": 658,
    "height": 257,
    "sha256": "31615b33c5ebfebba91494ac8f6a9ea8a7a2da315a5c1e4d96fd236f595200c6",
    "bytes": 45483
  },
  {
    "file": "04-13-MXtWmr6ebq.png",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/857/MXtWmr6ebq.png",
    "lesson": "数据库设计",
    "chapterId": "161781",
    "lesson_url": "https://wangxiao.xisaiwang.com/nstu/sub/databank/bookDetail/bookDetail?ebookId=10794&chapterId=161781&nextPaperName=%E3%80%902026%E7%89%88%E6%9C%AC%E3%80%91%E8%BD%AF%E4%BB%B6%E8%AE%BE%E8%AE%A1%E5%B8%88%E8%80%83%E8%AF%95%E7%B2%BE%E8%AE%B2%E7%8F%AD%E8%A7%86%E9%A2%91%E6%95%99%E7%A8%8B%E8%AE%B2%E4%B9%89%E7%94%B5%E5%AD%90%E7%89%88&detailId=10794",
    "width": 726,
    "height": 282,
    "sha256": "78ede4bb1e86032d016970a06ee136956c0460d0954098d57131924146bacb83",
    "bytes": 51020
  },
  {
    "file": "04-14-QF2aGxfN7s.png",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/430/QF2aGxfN7s.png",
    "lesson": "数据库设计",
    "chapterId": "161781",
    "lesson_url": "https://wangxiao.xisaiwang.com/nstu/sub/databank/bookDetail/bookDetail?ebookId=10794&chapterId=161781&nextPaperName=%E3%80%902026%E7%89%88%E6%9C%AC%E3%80%91%E8%BD%AF%E4%BB%B6%E8%AE%BE%E8%AE%A1%E5%B8%88%E8%80%83%E8%AF%95%E7%B2%BE%E8%AE%B2%E7%8F%AD%E8%A7%86%E9%A2%91%E6%95%99%E7%A8%8B%E8%AE%B2%E4%B9%89%E7%94%B5%E5%AD%90%E7%89%88&detailId=10794",
    "width": 716,
    "height": 276,
    "sha256": "9fa32d3085214deba48f0283c2c33885dc31f594127ffafb85bc1478a5ecd3dd",
    "bytes": 52918
  },
  {
    "file": "04-15-Au4YkJxcxn.png",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/869/Au4YkJxcxn.png",
    "lesson": "数据库设计",
    "chapterId": "161781",
    "lesson_url": "https://wangxiao.xisaiwang.com/nstu/sub/databank/bookDetail/bookDetail?ebookId=10794&chapterId=161781&nextPaperName=%E3%80%902026%E7%89%88%E6%9C%AC%E3%80%91%E8%BD%AF%E4%BB%B6%E8%AE%BE%E8%AE%A1%E5%B8%88%E8%80%83%E8%AF%95%E7%B2%BE%E8%AE%B2%E7%8F%AD%E8%A7%86%E9%A2%91%E6%95%99%E7%A8%8B%E8%AE%B2%E4%B9%89%E7%94%B5%E5%AD%90%E7%89%88&detailId=10794",
    "width": 987,
    "height": 161,
    "sha256": "a67350e2154fbe7a60b5b11eb06804020491f14a54d3aaf10026cacb85ee169d",
    "bytes": 21601
  },
  {
    "file": "05-01-6jz3DYwLTw.png",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/120/6jz3DYwLTw.png",
    "lesson": "关系代数",
    "chapterId": "161782",
    "lesson_url": "https://wangxiao.xisaiwang.com/nstu/sub/databank/bookDetail/bookDetail?ebookId=10794&chapterId=161782&nextPaperName=%E3%80%902026%E7%89%88%E6%9C%AC%E3%80%91%E8%BD%AF%E4%BB%B6%E8%AE%BE%E8%AE%A1%E5%B8%88%E8%80%83%E8%AF%95%E7%B2%BE%E8%AE%B2%E7%8F%AD%E8%A7%86%E9%A2%91%E6%95%99%E7%A8%8B%E8%AE%B2%E4%B9%89%E7%94%B5%E5%AD%90%E7%89%88&detailId=10794",
    "width": 987,
    "height": 203,
    "sha256": "817b92f1a6c47c01c868c5c712a46cdbea8880a819ce8e4133ae3ed6ebf8c806",
    "bytes": 20632
  },
  {
    "file": "05-02-vJGmuCJLb3.png",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/487/vJGmuCJLb3.png",
    "lesson": "关系代数",
    "chapterId": "161782",
    "lesson_url": "https://wangxiao.xisaiwang.com/nstu/sub/databank/bookDetail/bookDetail?ebookId=10794&chapterId=161782&nextPaperName=%E3%80%902026%E7%89%88%E6%9C%AC%E3%80%91%E8%BD%AF%E4%BB%B6%E8%AE%BE%E8%AE%A1%E5%B8%88%E8%80%83%E8%AF%95%E7%B2%BE%E8%AE%B2%E7%8F%AD%E8%A7%86%E9%A2%91%E6%95%99%E7%A8%8B%E8%AE%B2%E4%B9%89%E7%94%B5%E5%AD%90%E7%89%88&detailId=10794",
    "width": 988,
    "height": 283,
    "sha256": "cbeb7ad880446d03777c30ec007f66d2e87b6917318808d57686c41617d6927b",
    "bytes": 21746
  },
  {
    "file": "05-03-sPuUQusuH5.png",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/972/sPuUQusuH5.png",
    "lesson": "关系代数",
    "chapterId": "161782",
    "lesson_url": "https://wangxiao.xisaiwang.com/nstu/sub/databank/bookDetail/bookDetail?ebookId=10794&chapterId=161782&nextPaperName=%E3%80%902026%E7%89%88%E6%9C%AC%E3%80%91%E8%BD%AF%E4%BB%B6%E8%AE%BE%E8%AE%A1%E5%B8%88%E8%80%83%E8%AF%95%E7%B2%BE%E8%AE%B2%E7%8F%AD%E8%A7%86%E9%A2%91%E6%95%99%E7%A8%8B%E8%AE%B2%E4%B9%89%E7%94%B5%E5%AD%90%E7%89%88&detailId=10794",
    "width": 988,
    "height": 125,
    "sha256": "57bbff52796652040f5ea90f7be55c40828ad98a0914b6f118554ebaedb453f9",
    "bytes": 9417
  },
  {
    "file": "05-04-uZPtj6nqDt.png",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/514/uZPtj6nqDt.png",
    "lesson": "关系代数",
    "chapterId": "161782",
    "lesson_url": "https://wangxiao.xisaiwang.com/nstu/sub/databank/bookDetail/bookDetail?ebookId=10794&chapterId=161782&nextPaperName=%E3%80%902026%E7%89%88%E6%9C%AC%E3%80%91%E8%BD%AF%E4%BB%B6%E8%AE%BE%E8%AE%A1%E5%B8%88%E8%80%83%E8%AF%95%E7%B2%BE%E8%AE%B2%E7%8F%AD%E8%A7%86%E9%A2%91%E6%95%99%E7%A8%8B%E8%AE%B2%E4%B9%89%E7%94%B5%E5%AD%90%E7%89%88&detailId=10794",
    "width": 988,
    "height": 163,
    "sha256": "57ed5cafe3bf575955d5fecd6097729c72f0657095fc1e8afff4146245db90d9",
    "bytes": 12449
  },
  {
    "file": "05-05-jetvD8c4Qg.png",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/821/jetvD8c4Qg.png",
    "lesson": "关系代数",
    "chapterId": "161782",
    "lesson_url": "https://wangxiao.xisaiwang.com/nstu/sub/databank/bookDetail/bookDetail?ebookId=10794&chapterId=161782&nextPaperName=%E3%80%902026%E7%89%88%E6%9C%AC%E3%80%91%E8%BD%AF%E4%BB%B6%E8%AE%BE%E8%AE%A1%E5%B8%88%E8%80%83%E8%AF%95%E7%B2%BE%E8%AE%B2%E7%8F%AD%E8%A7%86%E9%A2%91%E6%95%99%E7%A8%8B%E8%AE%B2%E4%B9%89%E7%94%B5%E5%AD%90%E7%89%88&detailId=10794",
    "width": 989,
    "height": 441,
    "sha256": "a1491544940fe529e45d4c16c51ff5d2a9d53e524ea92fce57d347686ad77f53",
    "bytes": 49518
  },
  {
    "file": "05-06-rdUyUpc2pU.png",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/15/rdUyUpc2pU.png",
    "lesson": "关系代数",
    "chapterId": "161782",
    "lesson_url": "https://wangxiao.xisaiwang.com/nstu/sub/databank/bookDetail/bookDetail?ebookId=10794&chapterId=161782&nextPaperName=%E3%80%902026%E7%89%88%E6%9C%AC%E3%80%91%E8%BD%AF%E4%BB%B6%E8%AE%BE%E8%AE%A1%E5%B8%88%E8%80%83%E8%AF%95%E7%B2%BE%E8%AE%B2%E7%8F%AD%E8%A7%86%E9%A2%91%E6%95%99%E7%A8%8B%E8%AE%B2%E4%B9%89%E7%94%B5%E5%AD%90%E7%89%88&detailId=10794",
    "width": 989,
    "height": 204,
    "sha256": "c7bcc7358c7eff4dc3087e1d92129a25cac8a3f9e33f201a2d0e75dcf62a967f",
    "bytes": 15514
  },
  {
    "file": "05-07-Ud8kLEpn6K.png",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/668/Ud8kLEpn6K.png",
    "lesson": "关系代数",
    "chapterId": "161782",
    "lesson_url": "https://wangxiao.xisaiwang.com/nstu/sub/databank/bookDetail/bookDetail?ebookId=10794&chapterId=161782&nextPaperName=%E3%80%902026%E7%89%88%E6%9C%AC%E3%80%91%E8%BD%AF%E4%BB%B6%E8%AE%BE%E8%AE%A1%E5%B8%88%E8%80%83%E8%AF%95%E7%B2%BE%E8%AE%B2%E7%8F%AD%E8%A7%86%E9%A2%91%E6%95%99%E7%A8%8B%E8%AE%B2%E4%B9%89%E7%94%B5%E5%AD%90%E7%89%88&detailId=10794",
    "width": 987,
    "height": 124,
    "sha256": "7776226f56c4572aa12dacc58cf320dd183ebf5685637f0f1374ca089a5edbe4",
    "bytes": 11308
  },
  {
    "file": "05-08-mHTSHZJCF6.png",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/393/mHTSHZJCF6.png",
    "lesson": "关系代数",
    "chapterId": "161782",
    "lesson_url": "https://wangxiao.xisaiwang.com/nstu/sub/databank/bookDetail/bookDetail?ebookId=10794&chapterId=161782&nextPaperName=%E3%80%902026%E7%89%88%E6%9C%AC%E3%80%91%E8%BD%AF%E4%BB%B6%E8%AE%BE%E8%AE%A1%E5%B8%88%E8%80%83%E8%AF%95%E7%B2%BE%E8%AE%B2%E7%8F%AD%E8%A7%86%E9%A2%91%E6%95%99%E7%A8%8B%E8%AE%B2%E4%B9%89%E7%94%B5%E5%AD%90%E7%89%88&detailId=10794",
    "width": 987,
    "height": 362,
    "sha256": "f59909549adc83551a58ba2ff5c7f073f129bca13b8024a375fe837b047aa9f2",
    "bytes": 32264
  },
  {
    "file": "06-01-hVQ8K6mBn8.png",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/825/hVQ8K6mBn8.png",
    "lesson": "规范化理论",
    "chapterId": "161783",
    "lesson_url": "https://wangxiao.xisaiwang.com/nstu/sub/databank/bookDetail/bookDetail?ebookId=10794&chapterId=161783&nextPaperName=%E3%80%902026%E7%89%88%E6%9C%AC%E3%80%91%E8%BD%AF%E4%BB%B6%E8%AE%BE%E8%AE%A1%E5%B8%88%E8%80%83%E8%AF%95%E7%B2%BE%E8%AE%B2%E7%8F%AD%E8%A7%86%E9%A2%91%E6%95%99%E7%A8%8B%E8%AE%B2%E4%B9%89%E7%94%B5%E5%AD%90%E7%89%88&detailId=10794",
    "width": 206,
    "height": 157,
    "sha256": "8dfa566b2cf52b8ef7af0318e1456610b08ccbec3446b5112402bcf4bfb13d49",
    "bytes": 9105
  },
  {
    "file": "06-02-wzhPFT9ghn.png",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/730/wzhPFT9ghn.png",
    "lesson": "规范化理论",
    "chapterId": "161783",
    "lesson_url": "https://wangxiao.xisaiwang.com/nstu/sub/databank/bookDetail/bookDetail?ebookId=10794&chapterId=161783&nextPaperName=%E3%80%902026%E7%89%88%E6%9C%AC%E3%80%91%E8%BD%AF%E4%BB%B6%E8%AE%BE%E8%AE%A1%E5%B8%88%E8%80%83%E8%AF%95%E7%B2%BE%E8%AE%B2%E7%8F%AD%E8%A7%86%E9%A2%91%E6%95%99%E7%A8%8B%E8%AE%B2%E4%B9%89%E7%94%B5%E5%AD%90%E7%89%88&detailId=10794",
    "width": 243,
    "height": 110,
    "sha256": "f63e5ff3fe3e4811b2f5980c723ec7040c58948a4bccf002f3111876ec47a64b",
    "bytes": 8755
  },
  {
    "file": "06-03-8yx8XMjtLy.png",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/917/8yx8XMjtLy.png",
    "lesson": "规范化理论",
    "chapterId": "161783",
    "lesson_url": "https://wangxiao.xisaiwang.com/nstu/sub/databank/bookDetail/bookDetail?ebookId=10794&chapterId=161783&nextPaperName=%E3%80%902026%E7%89%88%E6%9C%AC%E3%80%91%E8%BD%AF%E4%BB%B6%E8%AE%BE%E8%AE%A1%E5%B8%88%E8%80%83%E8%AF%95%E7%B2%BE%E8%AE%B2%E7%8F%AD%E8%A7%86%E9%A2%91%E6%95%99%E7%A8%8B%E8%AE%B2%E4%B9%89%E7%94%B5%E5%AD%90%E7%89%88&detailId=10794",
    "width": 452,
    "height": 302,
    "sha256": "660636ce1db44257849a6e9bb3b3958a32a4af9b5e8d2eedf7ec9a8240fa4557",
    "bytes": 20103
  },
  {
    "file": "06-04-aEw29HbFBw.png",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/390/aEw29HbFBw.png",
    "lesson": "规范化理论",
    "chapterId": "161783",
    "lesson_url": "https://wangxiao.xisaiwang.com/nstu/sub/databank/bookDetail/bookDetail?ebookId=10794&chapterId=161783&nextPaperName=%E3%80%902026%E7%89%88%E6%9C%AC%E3%80%91%E8%BD%AF%E4%BB%B6%E8%AE%BE%E8%AE%A1%E5%B8%88%E8%80%83%E8%AF%95%E7%B2%BE%E8%AE%B2%E7%8F%AD%E8%A7%86%E9%A2%91%E6%95%99%E7%A8%8B%E8%AE%B2%E4%B9%89%E7%94%B5%E5%AD%90%E7%89%88&detailId=10794",
    "width": 988,
    "height": 165,
    "sha256": "26f21ae697f25f63d18b06c23dd84b29ae41693958e3062c54c63b880374a64c",
    "bytes": 15009
  },
  {
    "file": "06-05-6ZQJQhrw6U.png",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/504/6ZQJQhrw6U.png",
    "lesson": "规范化理论",
    "chapterId": "161783",
    "lesson_url": "https://wangxiao.xisaiwang.com/nstu/sub/databank/bookDetail/bookDetail?ebookId=10794&chapterId=161783&nextPaperName=%E3%80%902026%E7%89%88%E6%9C%AC%E3%80%91%E8%BD%AF%E4%BB%B6%E8%AE%BE%E8%AE%A1%E5%B8%88%E8%80%83%E8%AF%95%E7%B2%BE%E8%AE%B2%E7%8F%AD%E8%A7%86%E9%A2%91%E6%95%99%E7%A8%8B%E8%AE%B2%E4%B9%89%E7%94%B5%E5%AD%90%E7%89%88&detailId=10794",
    "width": 988,
    "height": 364,
    "sha256": "38acce8c7a1f0c8ae872e48b016402912e8bd576349f6ac64715c9c8d56a2c7d",
    "bytes": 24680
  },
  {
    "file": "06-06-7trMsWv3ZP.png",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/803/7trMsWv3ZP.png",
    "lesson": "规范化理论",
    "chapterId": "161783",
    "lesson_url": "https://wangxiao.xisaiwang.com/nstu/sub/databank/bookDetail/bookDetail?ebookId=10794&chapterId=161783&nextPaperName=%E3%80%902026%E7%89%88%E6%9C%AC%E3%80%91%E8%BD%AF%E4%BB%B6%E8%AE%BE%E8%AE%A1%E5%B8%88%E8%80%83%E8%AF%95%E7%B2%BE%E8%AE%B2%E7%8F%AD%E8%A7%86%E9%A2%91%E6%95%99%E7%A8%8B%E8%AE%B2%E4%B9%89%E7%94%B5%E5%AD%90%E7%89%88&detailId=10794",
    "width": 988,
    "height": 247,
    "sha256": "9e077816bd34fe351ee9e7c2ad0c3d5412f237c4122e6fc8953ad21ee2079e6f",
    "bytes": 25648
  },
  {
    "file": "06-07-gnugvRmnR2.png",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/133/gnugvRmnR2.png",
    "lesson": "规范化理论",
    "chapterId": "161783",
    "lesson_url": "https://wangxiao.xisaiwang.com/nstu/sub/databank/bookDetail/bookDetail?ebookId=10794&chapterId=161783&nextPaperName=%E3%80%902026%E7%89%88%E6%9C%AC%E3%80%91%E8%BD%AF%E4%BB%B6%E8%AE%BE%E8%AE%A1%E5%B8%88%E8%80%83%E8%AF%95%E7%B2%BE%E8%AE%B2%E7%8F%AD%E8%A7%86%E9%A2%91%E6%95%99%E7%A8%8B%E8%AE%B2%E4%B9%89%E7%94%B5%E5%AD%90%E7%89%88&detailId=10794",
    "width": 187,
    "height": 152,
    "sha256": "653db5e67ede7f2bf90b0b5244c78c61e7f80483602c2e9bc6df7bfc2b0587c8",
    "bytes": 5260
  },
  {
    "file": "06-08-gJhvBN58aJ.png",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/147/gJhvBN58aJ.png",
    "lesson": "规范化理论",
    "chapterId": "161783",
    "lesson_url": "https://wangxiao.xisaiwang.com/nstu/sub/databank/bookDetail/bookDetail?ebookId=10794&chapterId=161783&nextPaperName=%E3%80%902026%E7%89%88%E6%9C%AC%E3%80%91%E8%BD%AF%E4%BB%B6%E8%AE%BE%E8%AE%A1%E5%B8%88%E8%80%83%E8%AF%95%E7%B2%BE%E8%AE%B2%E7%8F%AD%E8%A7%86%E9%A2%91%E6%95%99%E7%A8%8B%E8%AE%B2%E4%B9%89%E7%94%B5%E5%AD%90%E7%89%88&detailId=10794",
    "width": 593,
    "height": 380,
    "sha256": "b770a61e655ca4edcba8d65ac06d7b93173f154d24d8bfb8745a2d189340470d",
    "bytes": 51327
  },
  {
    "file": "07-01-yEuXWTJvA6.png",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/649/yEuXWTJvA6.png",
    "lesson": "SQL语言",
    "chapterId": "161784",
    "lesson_url": "https://wangxiao.xisaiwang.com/nstu/sub/databank/bookDetail/bookDetail?ebookId=10794&chapterId=161784&nextPaperName=%E3%80%902026%E7%89%88%E6%9C%AC%E3%80%91%E8%BD%AF%E4%BB%B6%E8%AE%BE%E8%AE%A1%E5%B8%88%E8%80%83%E8%AF%95%E7%B2%BE%E8%AE%B2%E7%8F%AD%E8%A7%86%E9%A2%91%E6%95%99%E7%A8%8B%E8%AE%B2%E4%B9%89%E7%94%B5%E5%AD%90%E7%89%88&detailId=10794",
    "width": 988,
    "height": 207,
    "sha256": "2cd56b9581f6f237399e6f0785e21002a0cfada041c6f28f19fe0cf6376e4f2f",
    "bytes": 21328
  },
  {
    "file": "07-02-PJE34QSER3.png",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/205/PJE34QSER3.png",
    "lesson": "SQL语言",
    "chapterId": "161784",
    "lesson_url": "https://wangxiao.xisaiwang.com/nstu/sub/databank/bookDetail/bookDetail?ebookId=10794&chapterId=161784&nextPaperName=%E3%80%902026%E7%89%88%E6%9C%AC%E3%80%91%E8%BD%AF%E4%BB%B6%E8%AE%BE%E8%AE%A1%E5%B8%88%E8%80%83%E8%AF%95%E7%B2%BE%E8%AE%B2%E7%8F%AD%E8%A7%86%E9%A2%91%E6%95%99%E7%A8%8B%E8%AE%B2%E4%B9%89%E7%94%B5%E5%AD%90%E7%89%88&detailId=10794",
    "width": 987,
    "height": 365,
    "sha256": "0ab9ab58f364714c47af631c159e0ab321e95668caa74a5844538a8d177cdcdf",
    "bytes": 63665
  },
  {
    "file": "08-01-JhJzKST4Uk.png",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/541/JhJzKST4Uk.png",
    "lesson": "并发控制",
    "chapterId": "161785",
    "lesson_url": "https://wangxiao.xisaiwang.com/nstu/sub/databank/bookDetail/bookDetail?ebookId=10794&chapterId=161785&nextPaperName=%E3%80%902026%E7%89%88%E6%9C%AC%E3%80%91%E8%BD%AF%E4%BB%B6%E8%AE%BE%E8%AE%A1%E5%B8%88%E8%80%83%E8%AF%95%E7%B2%BE%E8%AE%B2%E7%8F%AD%E8%A7%86%E9%A2%91%E6%95%99%E7%A8%8B%E8%AE%B2%E4%B9%89%E7%94%B5%E5%AD%90%E7%89%88&detailId=10794",
    "width": 637,
    "height": 181,
    "sha256": "ae5920209140478de461a798b22d98464d002a359fed2c35b03287f9b88b916d",
    "bytes": 14828
  },
  {
    "file": "08-02-J7VuSzh3Ke.png",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/386/J7VuSzh3Ke.png",
    "lesson": "并发控制",
    "chapterId": "161785",
    "lesson_url": "https://wangxiao.xisaiwang.com/nstu/sub/databank/bookDetail/bookDetail?ebookId=10794&chapterId=161785&nextPaperName=%E3%80%902026%E7%89%88%E6%9C%AC%E3%80%91%E8%BD%AF%E4%BB%B6%E8%AE%BE%E8%AE%A1%E5%B8%88%E8%80%83%E8%AF%95%E7%B2%BE%E8%AE%B2%E7%8F%AD%E8%A7%86%E9%A2%91%E6%95%99%E7%A8%8B%E8%AE%B2%E4%B9%89%E7%94%B5%E5%AD%90%E7%89%88&detailId=10794",
    "width": 989,
    "height": 205,
    "sha256": "b57a582159b49b55e21b8643c90f8316ae46884dcbb7d550d72ba678ee00a4f9",
    "bytes": 12281
  },
  {
    "file": "08-03-emSEBWUVJ8.png",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/848/emSEBWUVJ8.png",
    "lesson": "并发控制",
    "chapterId": "161785",
    "lesson_url": "https://wangxiao.xisaiwang.com/nstu/sub/databank/bookDetail/bookDetail?ebookId=10794&chapterId=161785&nextPaperName=%E3%80%902026%E7%89%88%E6%9C%AC%E3%80%91%E8%BD%AF%E4%BB%B6%E8%AE%BE%E8%AE%A1%E5%B8%88%E8%80%83%E8%AF%95%E7%B2%BE%E8%AE%B2%E7%8F%AD%E8%A7%86%E9%A2%91%E6%95%99%E7%A8%8B%E8%AE%B2%E4%B9%89%E7%94%B5%E5%AD%90%E7%89%88&detailId=10794",
    "width": 988,
    "height": 470,
    "sha256": "76b1059bf2fa6ac6aa086297d7933df1d3faf3eedfdc7210892942c27be53485",
    "bytes": 26784
  },
  {
    "file": "08-04-e5tfQuHMr3.png",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/930/e5tfQuHMr3.png",
    "lesson": "并发控制",
    "chapterId": "161785",
    "lesson_url": "https://wangxiao.xisaiwang.com/nstu/sub/databank/bookDetail/bookDetail?ebookId=10794&chapterId=161785&nextPaperName=%E3%80%902026%E7%89%88%E6%9C%AC%E3%80%91%E8%BD%AF%E4%BB%B6%E8%AE%BE%E8%AE%A1%E5%B8%88%E8%80%83%E8%AF%95%E7%B2%BE%E8%AE%B2%E7%8F%AD%E8%A7%86%E9%A2%91%E6%95%99%E7%A8%8B%E8%AE%B2%E4%B9%89%E7%94%B5%E5%AD%90%E7%89%88&detailId=10794",
    "width": 988,
    "height": 279,
    "sha256": "d41d028a292439ec5f4f4556a0a8cd03268e52d1f9eed3302d861d133eef46cc",
    "bytes": 16935
  },
  {
    "file": "08-05-LngAG2YbFR.png",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/331/LngAG2YbFR.png",
    "lesson": "并发控制",
    "chapterId": "161785",
    "lesson_url": "https://wangxiao.xisaiwang.com/nstu/sub/databank/bookDetail/bookDetail?ebookId=10794&chapterId=161785&nextPaperName=%E3%80%902026%E7%89%88%E6%9C%AC%E3%80%91%E8%BD%AF%E4%BB%B6%E8%AE%BE%E8%AE%A1%E5%B8%88%E8%80%83%E8%AF%95%E7%B2%BE%E8%AE%B2%E7%8F%AD%E8%A7%86%E9%A2%91%E6%95%99%E7%A8%8B%E8%AE%B2%E4%B9%89%E7%94%B5%E5%AD%90%E7%89%88&detailId=10794",
    "width": 521,
    "height": 407,
    "sha256": "1f78906b82f53db56eb0323145b9253deba79bd4c22cad95a83ad18a70fa931d",
    "bytes": 28271
  },
  {
    "file": "08-06-uzmH6CSwWK.png",
    "url": "https://img.ixueyi.net/images/px_vc/2025-12/953/uzmH6CSwWK.png",
    "lesson": "并发控制",
    "chapterId": "161785",
    "lesson_url": "https://wangxiao.xisaiwang.com/nstu/sub/databank/bookDetail/bookDetail?ebookId=10794&chapterId=161785&nextPaperName=%E3%80%902026%E7%89%88%E6%9C%AC%E3%80%91%E8%BD%AF%E4%BB%B6%E8%AE%BE%E8%AE%A1%E5%B8%88%E8%80%83%E8%AF%95%E7%B2%BE%E8%AE%B2%E7%8F%AD%E8%A7%86%E9%A2%91%E6%95%99%E7%A8%8B%E8%AE%B2%E4%B9%89%E7%94%B5%E5%AD%90%E7%89%88&detailId=10794",
    "width": 988,
    "height": 562,
    "sha256": "d76e4bed41c5720338c6e0d3d28ce08949746d8ebab1145ee7f6b0be91102e66",
    "bytes": 38389
  }
]