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SQL\u5bf9\u7f3a\u5931\u503c\u3001\u5f02\u5e38\u503c\u8fdb\u884c\u586b\u8865\u6216\u5254\u9664&#xff0c;\u5e76\u7edf\u4e00\u65f6\u95f4\u6233\u683c\u5f0f\u3001\u5750\u6807\u7cfb\u53ca\u5b57\u6bb5\u547d\u540d&#xff1b;\u5143\u6570\u636e\u7ba1\u7406\u5b50\u6a21\u5757\u7ef4\u62a4\u6570\u636e\u5b57\u5178\u3001\u7248\u672c\u4fe1\u606f\u4e0e\u6570\u636e\u8840\u7f18\u5173\u7cfb&#xff0c;\u652f\u6301\u540e\u7eed\u67e5\u8be2\u4e0e\u5ba1\u8ba1\u3002\u968f\u540e&#xff0c;\u7279\u5f81\u6784\u9020\u5c42\u5305\u542b\u7a7a\u95f4\u7279\u5f81\u63d0\u53d6\u5b50\u6a21\u5757\u3001\u65f6\u5e8f\u7279\u5f81\u751f\u6210\u5b50\u6a21\u5757\u4ee5\u53ca\u5916\u90e8\u73af\u5883\u878d\u5408\u5b50\u6a21\u5757\u3002\u7a7a\u95f4\u7279\u5f81\u63d0\u53d6\u5b50\u6a21\u5757\u4ece\u8f68\u8ff9\u6570\u636e\u4e2d\u8ba1\u7b97\u505c\u7559\u65f6\u957f\u3001\u8f6c\u5411\u6b21\u6570\u4e0e\u901f\u5ea6\u5206\u5e03&#xff1b;\u65f6\u5e8f\u7279\u5f81\u751f\u6210\u5b50\u6a21\u5757\u5229\u7528\u6ed1\u52a8\u7a97\u53e3\u6280\u672f\u63d0\u53d6\u8ba2\u5355\u91cf\u7684\u5b63\u8282\u6027\u4e0e\u5468\u671f\u6027\u6307\u6807&#xff1b;\u5916\u90e8\u73af\u5883\u878d\u5408\u5b50\u6a21\u5757\u5c06\u5929\u6c14\u3001\u4ea4\u901a\u62e5\u5835\u6307\u6570\u7b49\u5916\u90e8\u53d8\u91cf\u4e0e\u5185\u90e8\u4e1a\u52a1\u6307\u6807\u8fdb\u884c\u5173\u8054&#xff0c;\u5f62\u6210\u7edf\u4e00\u7279\u5f81\u77e9\u9635\u3002\u63a5\u4e0b\u6765&#xff0c;\u9884\u6d4b\u4e0e\u4f18\u5316\u5c42\u7531\u9700\u6c42\u9884\u6d4b\u5b50\u6a21\u5757\u548c\u8c03\u5ea6\u4f18\u5316\u5b50\u6a21\u5757\u6784\u6210\u3002\u9700\u6c42\u9884\u6d4b\u5b50\u6a21\u5757\u96c6\u6210ARIMA\u3001LSTM\u4e0eXGBoost\u7b49\u6a21\u578b&#xff0c;\u5e76\u901a\u8fc7\u4ea4\u53c9\u9a8c\u8bc1\u4e0e\u7f51\u683c\u641c\u7d22\u81ea\u52a8\u8c03\u53c2&#xff0c;\u8f93\u51fa\u672a\u6765\u4e00\u6bb5\u65f6\u95f4\u5185\u7684\u8ba2\u5355\u91cf\u5206\u5e03&#xff1b;\u8c03\u5ea6\u4f18\u5316\u5b50\u6a21\u5757\u5b9e\u73b0\u591a\u76ee\u6807\u52a8\u6001\u8f66\u8f86\u8def\u5f84\u95ee\u9898\u6c42\u89e3&#xff0c;\u91c7\u7528\u5f3a\u5316\u5b66\u4e60\u6216\u9057\u4f20\u7b97\u6cd5\u5728\u8003\u8651\u5b9e\u65f6\u4ea4\u901a\u3001\u65f6\u95f4\u7a97\u4e0e\u8f66\u8f86\u5bb9\u91cf\u7ea6\u675f\u7684\u524d\u63d0\u4e0b\u751f\u6210\u8fd1\u6700\u4f18\u8c03\u5ea6\u65b9\u6848&#xff0c;\u5e76\u901a\u8fc7Spark Streaming\u5b9e\u73b0\u589e\u91cf\u66f4\u65b0\u3002\u968f\u540e&#xff0c;\u5b9e\u65f6\u76d1\u63a7\u4e0e\u544a\u8b66\u5c42\u5305\u542b\u72b6\u6001\u8ddf\u8e2a\u5b50\u6a21\u5757\u548c\u5f02\u5e38\u68c0\u6d4b\u5b50\u6a21\u5757\u3002\u72b6\u6001\u8ddf\u8e2a\u5b50\u6a21\u5757\u5b9e\u65f6\u805a\u5408\u8f66\u8f86\u4f4d\u7f6e\u3001\u901f\u5ea6\u4e0e\u8ba2\u5355\u8fdb\u5ea6&#xff0c;\u5e76\u5728\u5730\u56fe\u4e0a\u53ef\u89c6\u5316\u5c55\u793a&#xff1b;\u5f02\u5e38\u68c0\u6d4b\u5b50\u6a21\u5757\u57fa\u4e8e\u9608\u503c\u548c\u6a21\u578b\u9884\u6d4b\u8bef\u5dee\u8bc6\u522b\u504f\u79bb\u9884\u5b9a\u8def\u7ebf\u3001\u5ef6\u8bef\u6216\u8bbe\u5907\u6545\u969c\u7b49\u4e8b\u4ef6&#xff0c;\u5e76\u901a\u8fc7\u77ed\u4fe1\u3001\u90ae\u4ef6\u6216\u4f01\u4e1a\u5fae\u4fe1\u63a8\u9001\u5373\u65f6\u544a\u8b66\u3002\u968f\u540e&#xff0c;\u53ef\u89c6\u5316\u4e0e\u51b3\u7b56\u652f\u6301\u5c42\u7531\u4eea\u8868\u76d8\u5b50\u6a21\u5757\u3001\u62a5\u8868\u751f\u6210\u5b50\u6a21\u5757\u548c\u51b3\u7b56\u5efa\u8bae\u5b50\u6a21\u5757\u7ec4\u6210\u3002\u4eea\u8868\u76d8\u5b50\u6a21\u5757\u5229\u7528Plotly Dash\u6216Bokeh\u6784\u5efa\u4ea4\u4e92\u5f0f\u5730\u56fe\u4e0e\u6307\u6807\u9762\u677f&#xff1b;\u62a5\u8868\u751f\u6210\u5b50\u6a21\u5757\u652f\u6301\u81ea\u5b9a\u4e49\u7ef4\u5ea6\u4e0e\u5468\u671f\u7684\u62a5\u8868\u5bfc\u51fa&#xff1b;\u51b3\u7b56\u5efa\u8bae\u5b50\u6a21\u5757\u6839\u636e\u9884\u6d4b\u7ed3\u679c\u4e0e\u4f18\u5316\u65b9\u6848\u63d0\u4f9b\u8f66\u8f86\u8c03\u5ea6\u3001\u4ed3\u50a8\u5206\u914d\u53ca\u6210\u672c\u63a7\u5236\u5efa\u8bae\u3002\u6700\u540e&#xff0c;\u7cfb\u7edf\u7ba1\u7406\u4e0e\u5b89\u5168\u5c42\u5305\u62ec\u7528\u6237\u6743\u9650\u7ba1\u7406\u5b50\u6a21\u5757\u3001API\u63a5\u53e3\u5b50\u6a21\u5757\u548c\u5b89\u5168\u5ba1\u8ba1\u5b50\u6a21\u5757\u3002\u7528\u6237\u6743\u9650\u7ba1\u7406\u5b50\u6a21\u5757\u5b9e\u73b0\u57fa\u4e8e\u89d2\u8272\u7684\u8bbf\u95ee\u63a7\u5236&#xff1b;API\u63a5\u53e3\u5b50\u6a21\u5757\u63d0\u4f9bRESTful\u670d\u52a1&#xff0c;\u652f\u6301\u7b2c\u4e09\u65b9\u7cfb\u7edf\u6216\u79fb\u52a8\u7aef\u8c03\u7528&#xff1b;\u5b89\u5168\u5ba1\u8ba1\u5b50\u6a21\u5757\u8bb0\u5f55\u6570\u636e\u8bbf\u95ee\u65e5\u5fd7\u3001\u64cd\u4f5c\u65e5\u5fd7\u5e76\u652f\u6301\u5408\u89c4\u6027\u62a5\u544a\u3002<\/p>\n<p>\u901a\u8fc7\u4e0a\u8ff0\u4e03\u5927\u5c42\u9762\u53ca\u5176\u5b50\u6a21\u5757\u7684\u534f\u540c\u5de5\u4f5c&#xff0c;\u7cfb\u7edf\u80fd\u591f\u5b9e\u73b0\u4ece\u591a\u6e90\u5f02\u6784\u6570\u636e\u7684\u5b9e\u65f6\u91c7\u96c6\u4e0e\u9ad8\u6548\u5904\u7406&#xff0c;\u5230\u7cbe\u51c6\u9700\u6c42\u9884\u6d4b\u4e0e\u52a8\u6001\u8c03\u5ea6\u4f18\u5316&#xff0c;\u518d\u5230\u76f4\u89c2\u53ef\u89c6\u5316\u4e0e\u5373\u65f6\u544a\u8b66&#xff0c;\u6700\u7ec8\u4e3a\u7269\u6d41\u4f01\u4e1a\u63d0\u4f9b\u5b8c\u6574\u7684\u6570\u636e\u9a71\u52a8\u51b3\u7b56\u652f\u6301\u3002<\/p>\n<p>\u4e5d\u3001\u6570\u636e\u5e93\u8bbe\u8ba1<\/p>\n<p>\u8868&#xff1a;Vehicle \u00a0<br \/>\n\u5b57\u6bb5\u540d(\u82f1\u6587)\u2003\u8bf4\u660e(\u4e2d\u6587)\u2003\u5927\u5c0f\u2003\u7c7b\u578b\u2003\u4e3b\u5916\u952e\u2003\u5907\u6ce8 \u00a0<br \/>\nvehicle_id\u2003\u8f66\u8f86\u7f16\u53f7\u200310\u2003VARCHAR(10)\u2003PK\u2003\u4e3b\u952e&#xff0c;\u552f\u4e00\u6807\u8bc6\u8f66\u8f86 \u00a0<br \/>\nlicense_plate\u2003\u8f66\u724c\u53f7\u200315\u2003VARCHAR(15)\u2003\u2014\u2003\u8f66\u8f86\u6ce8\u518c\u4fe1\u606f \u00a0<br \/>\nvehicle_type\u2003\u8f66\u578b\u7c7b\u522b\u200320\u2003VARCHAR(20)\u2003\u2014\u2003\u5982\u201c\u5361\u8f66\u201d\u201c\u8f7b\u578b\u8d27\u8f66\u201d\u7b49 \u00a0<br \/>\ncapacity_kg\u2003\u8f7d\u91cd&#xff08;\u5343\u514b&#xff09;\u200310\u2003INT\u2003\u2014\u2003\u8f66\u8f86\u6700\u5927\u8f7d\u91cd \u00a0<br \/>\nstatus_flag\u2003\u72b6\u6001\u6807\u8bc6&#xff08;0&#xff1a;\u7a7a\u95f2&#xff0c;1&#xff1a;\u8c03\u5ea6\u4e2d&#xff0c;2&#xff1a;\u7ef4\u62a4\u4e2d&#xff09;\u20031\u2003TINYINT(1)\u2003\u2014 \u00a0<\/p>\n<p>\u8868&#xff1a;Order \u00a0<br \/>\n\u5b57\u6bb5\u540d(\u82f1\u6587)\u2003\u8bf4\u660e(\u4e2d\u6587)\u2003\u5927\u5c0f\u2003\u7c7b\u578b\u2003\u4e3b\u5916\u952e\u2003\u5907\u6ce8 \u00a0<br \/>\norder_id\u2003\u8ba2\u5355\u7f16\u53f7\u200320\u2003VARCHAR(20)\u2003PK\u2003\u4e3b\u952e&#xff0c;\u552f\u4e00\u6807\u8bc6\u8ba2\u5355 \u00a0<br \/>\npickup_latitude\u2003\u53d6\u8d27\u7eac\u5ea6\u200310.6\u2003DECIMAL(10,6)\u2003\u2014 \u00a0<br \/>\npickup_longitude\u2003\u53d6\u8d27\u7ecf\u5ea6\u200310.6\u2003DECIMAL(10,6)\u2003\u2014 \u00a0<br \/>\ndrop_latitude\u2003\u9001\u8fbe\u7eac\u5ea6\u200310.6\u2003DECIMAL(10,6)\u2003\u2014 \u00a0<br \/>\ndrop_longitude\u2003\u9001\u8fbe\u7ecf\u5ea6\u200310.6\u2003DECIMAL(10,6)\u2003\u2014 \u00a0<br \/>\nscheduled_time\u2003\u8ba1\u5212\u5230\u8fbe\u65f6\u95f4&#xff08;\u53d6\u8d27&#xff09;\u200319\u2003DATETIME\u2003\u2014 \u00a0<br \/>\nactual_time\u2003\u5b9e\u9645\u5230\u8fbe\u65f6\u95f4&#xff08;\u53d6\u8d27&#xff09;\u200319\u2003DATETIME\u2003\u2014 \u00a0<br \/>\norder_status\u2003\u8ba2\u5355\u72b6\u6001&#xff08;0&#xff1a;\u5f85\u6d3e\u9001&#xff0c;1&#xff1a;\u5df2\u6d3e\u9001&#xff0c;2&#xff1a;\u5df2\u5b8c\u6210&#xff09;\u20031\u2003TINYINT(1)\u2003\u2014 \u00a0<\/p>\n<p>\u8868&#xff1a;GPS_Record \u00a0<br \/>\n\u5b57\u6bb5\u540d(\u82f1\u6587)\u2003\u8bf4\u660e(\u4e2d\u6587)\u2003\u5927\u5c0f\u2003\u7c7b\u578b\u2003\u4e3b\u5916\u952e\u2003\u5907\u6ce8 \u00a0<br \/>\nrecord_id\u2003\u8bb0\u5f55\u7f16\u53f7\u200320\u2003VARCHAR(20)\u2003PK\u2003\u4e3b\u952e&#xff0c;\u552f\u4e00\u6807\u8bc6\u8f68\u8ff9\u8bb0\u5f55 \u00a0<br \/>\nvehicle_id\u2003\u8f66\u8f86\u7f16\u53f7\u200310\u2003VARCHAR(10)\u2003FK&#xff08;Vehicle.vehicle_id&#xff09;\u2003\u5173\u8054\u8f66\u8f86 \u00a0<br \/>\ntimestamp_utc\u2003\u65f6\u95f4\u6233&#xff08;UTC&#xff09;\u200319\u2003DATETIME\u2003\u2014 \u00a0<br \/>\nlatitude\u2003\u7eac\u5ea6\u200310.6\u2003DECIMAL(10,6)\u2003\u2014 \u00a0<br \/>\nlongitude\u2003\u7ecf\u5ea6\u200310.6\u2003DECIMAL(10,6)\u2003\u2014 \u00a0<br \/>\nspeed_kmh\u2003\u901f\u5ea6&#xff08;\u516c\u91cc\/\u5c0f\u65f6&#xff09;\u20035.2\u2003DECIMAL(5,2)\u2003\u2014 \u00a0<\/p>\n<p>\u8868&#xff1a;Weather_Observation \u00a0<br \/>\n\u5b57\u6bb5\u540d(\u82f1\u6587)\u2003\u8bf4\u660e(\u4e2d\u6587)\u2003\u5927\u5c0f\u2003\u7c7b\u578b\u2003\u4e3b\u5916\u952e\u2003\u5907\u6ce8 \u00a0<br \/>\nweather_id\u2003\u89c2\u6d4b\u7f16\u53f7\u200320\u2003VARCHAR(20)\u2003PK\u2003\u4e3b\u952e&#xff0c;\u552f\u4e00\u6807\u8bc6\u89c2\u6d4b\u8bb0\u5f55 \u00a0<br \/>\nregion_code\u2003\u5730\u533a\u7f16\u7801&#xff08;\u5982\u57ce\u5e02\u6216\u533a\u53bf&#xff09;\u200310\u2003VARCHAR(10)\u2003\u2014 \u00a0<br \/>\nobservation_time\u2003\u89c2\u6d4b\u65f6\u95f4&#xff08;UTC&#xff09;\u200319\u2003DATETIME\u2003\u2014 \u00a0<br \/>\ntemperature_celsius\u2003\u6e29\u5ea6&#xff08;\u6444\u6c0f\u5ea6&#xff09;\u20035.2\u2003DECIMAL(5,2)\u2003\u2014 \u00a0<br \/>\nhumidity_percent\u2003\u6e7f\u5ea6&#xff08;%&#xff09;\u20035.2\u2003DECIMAL(5,2)\u2003\u2014 \u00a0<br \/>\nwind_speed_kmh\u2003\u98ce\u901f&#xff08;\u516c\u91cc\/\u5c0f\u65f6&#xff09;\u20035.2\u2003DECIMAL(5,2)\u2003\u2014 \u00a0<\/p>\n<p>\u8868&#xff1a;Traffic_Observation \u00a0<br \/>\n\u5b57\u6bb5\u540d(\u82f1\u6587)\u2003\u8bf4\u660e(\u4e2d\u6587)\u2003\u5927\u5c0f\u2003\u7c7b\u578b\u2003\u4e3b\u5916\u952e\u2003\u5907\u6ce8 \u00a0<br \/>\ntraffic_id\u2003\u89c2\u6d4b\u7f16\u53f7\u200320\u2003VARCHAR(20)\u2003PK\u2003\u4e3b\u952e&#xff0c;\u552f\u4e00\u6807\u8bc6\u89c2\u6d4b\u8bb0\u5f55 \u00a0<br \/>\nregion_code\u2003\u5730\u533a\u7f16\u7801&#xff08;\u5982\u57ce\u5e02\u6216\u533a\u53bf&#xff09;\u200310\u2003VARCHAR(10)\u2003\u2014 \u00a0<br \/>\nobservation_time\u2003\u89c2\u6d4b\u65f6\u95f4&#xff08;UTC&#xff09;\u200319\u2003DATETIME\u2003\u2014 \u00a0<br \/>\ncongestion_level\u2003\u62e5\u5835\u7b49\u7ea7&#xff08;0&#xff1a;\u65e0\u62e5\u5835&#xff0c;1&#xff1a;\u8f7b\u5ea6&#xff0c;2&#xff1a;\u4e2d\u5ea6&#xff0c;3&#xff1a;\u91cd\u5ea6&#xff09;\u20031\u2003TINYINT(1)\u2003\u2014 \u00a0<\/p>\n<p>\u8868&#xff1a;Demand_Prediction \u00a0<br \/>\n\u5b57\u6bb5\u540d(\u82f1\u6587)\u2003\u8bf4\u660e(\u4e2d\u6587)\u2003\u5927\u5c0f\u2003\u7c7b\u578b\u2003\u4e3b\u5916\u952e\u2003\u5907\u6ce8 \u00a0<br \/>\nprediction_id\u2003\u9884\u6d4b\u7f16\u53f7\u200320\u2003VARCHAR(20)\u2003PK\u2003\u4e3b\u952e&#xff0c;\u552f\u4e00\u6807\u8bc6\u9884\u6d4b\u8bb0\u5f55 \u00a0<br \/>\nregion_code\u2003\u5730\u533a\u7f16\u7801&#xff08;\u5982\u57ce\u5e02\u6216\u533a\u53bf&#xff09;\u200310\u2003VARCHAR(10)\u2003\u2014 \u00a0<br \/>\nforecast_time_utc\u2003\u9884\u6d4b\u65f6\u95f4\u70b9&#xff08;UTC&#xff09;\u200319\u2003DATETIME\u2003\u2014 \u00a0<br \/>\npredicted_order_count\u2003\u9884\u6d4b\u8ba2\u5355\u6570\u76ee&#xff08;\u6574\u6570&#xff09;\u200310\u2003INT\u2003\u2014 \u00a0<\/p>\n<p>\u8868&#xff1a;Optimization_Plan \u00a0<br \/>\n\u5b57\u6bb5\u540d(\u82f1\u6587)\u2003\u8bf4\u660e(\u4e2d\u6587)\u2003\u5927\u5c0f\u2003\u7c7b\u578b\u2003\u4e3b\u5916\u952e\u2003\u5907\u6ce8 \u00a0<br \/>\nplan_id\u2003\u8ba1\u5212\u7f16\u53f7\u200320\u2003VARCHAR(20)\u2003PK\u2003\u4e3b\u952e&#xff0c;\u552f\u4e00\u6807\u8bc6\u8c03\u5ea6\u8ba1\u5212 \u00a0<br \/>\nvehicle_id\u2003\u8f66\u8f86\u7f16\u53f7&#xff08;\u53c2\u4e0e\u8c03\u5ea6&#xff09;\u200310\u2003VARCHAR(10)\u2003FK&#xff08;Vehicle.vehicle_id&#xff09;\u2003\u5173\u8054\u8f66\u8f86 \u00a0<br \/>\nstart_time_utc\u2003\u8ba1\u5212\u5f00\u59cb\u65f6\u95f4&#xff08;UTC&#xff09;\u200319\u2003DATETIME\u2003\u2014 \u00a0<br \/>\nend_time_utc\u2003\u8ba1\u5212\u7ed3\u675f\u65f6\u95f4&#xff08;UTC&#xff09;\u200319\u2003DATETIME\u2003\u2014 \u00a0<br \/>\nroute_polyline\u2003\u8def\u7ebf\u591a\u8fb9\u5f62\u5b57\u7b26\u4e32&#xff08;WKT\u6216GeoJSON&#xff09;\u20035000\u2003VARCHAR(5000)\u2003\u2014 \u00a0<br \/>\nplan_status\u2003\u8ba1\u5212\u72b6\u6001&#xff08;0&#xff1a;\u5f85\u6267\u884c&#xff0c;1&#xff1a;\u6267\u884c\u4e2d&#xff0c;2&#xff1a;\u5df2\u5b8c\u6210&#xff0c;3&#xff1a;\u5df2\u53d6\u6d88&#xff09;\u20031\u2003TINYINT(1)\u2003\u2014 \u00a0<\/p>\n<p>\u8868&#xff1a;Alarm \u00a0<br \/>\n\u5b57\u6bb5\u540d(\u82f1\u6587)\u2003\u8bf4\u660e(\u4e2d\u6587)\u2003\u5927\u5c0f\u2003\u7c7b\u578b\u2003\u4e3b\u5916\u952e\u2003\u5907\u6ce8 \u00a0<br \/>\nalarm_id\u2003\u544a\u8b66\u7f16\u53f7\u200320\u2003VARCHAR(20)\u2003PK\u2003\u4e3b\u952e&#xff0c;\u552f\u4e00\u6807\u8bc6\u544a\u8b66\u8bb0\u5f55 \u00a0<br \/>\nvehicle_id\u2003\u8f66\u8f86\u7f16\u53f7&#xff08;\u53ef\u4e3a\u7a7a&#xff09;\u200310\u2003VARCHAR(10)\u2003FK&#xff08;Vehicle.vehicle_id&#xff09;\u2003\u5173\u8054\u8f66\u8f86 \u00a0<br \/>\norder_id\u2003\u8ba2\u5355\u7f16\u53f7&#xff08;\u53ef\u4e3a\u7a7a&#xff09;\u200320\u2003VARCHAR(20)\u2003FK&#xff08;Order.order_id&#xff09;\u2003\u5173\u8054\u8ba2\u5355 \u00a0<br \/>\nalarm_type\u2003\u544a\u8b66\u7c7b\u578b&#xff08;\u5982\u201c\u504f\u79bb\u8def\u7ebf\u201d\u201c\u5ef6\u8bef\u201d\u201c\u8bbe\u5907\u6545\u969c\u201d&#xff09;\u200320\u2003VARCHAR(20)\u2003\u2014 \u00a0<br \/>\nalarm_time_utc\u2003\u544a\u8b66\u65f6\u95f4&#xff08;UTC&#xff09;\u200319\u2003DATETIME\u2003\u2014 \u00a0<br \/>\ndescription\u2003\u544a\u8b66\u63cf\u8ff0\u4fe1\u606f\u20032000\u2003VARCHAR(2000)\u2003\u2014 \u00a0<\/p>\n<p>\u8868&#xff1a;User \u00a0<br \/>\n\u5b57\u6bb5\u540d(\u82f1\u6587)\u2003\u8bf4\u660e(\u4e2d\u6587)\u2003\u5927\u5c0f\u2003\u7c7b\u578b\u2003\u4e3b\u5916\u952e\u2003\u5907\u6ce8 \u00a0<br \/>\nuser_id\u2003\u7528\u6237\u7f16\u53f7\u200320\u2003VARCHAR(20)\u2003PK\u2003\u4e3b\u952e&#xff0c;\u552f\u4e00\u6807\u8bc6\u7cfb\u7edf\u7528\u6237 \u00a0<br \/>\nusername\u2003\u7528\u6237\u540d&#xff08;\u767b\u5f55\u540d&#xff09;\u200330\u2003VARCHAR(30)\u2003\u2014 \u00a0<br \/>\npassword_hash\u2003\u5bc6\u7801\u54c8\u5e0c\u503c&#xff08;\u52a0\u5bc6\u540e\u5b58\u50a8&#xff09;\u200364\u2003CHAR(64)\u2003\u2014 \u00a0<br \/>\nrole_name\u2003\u89d2\u8272\u540d\u79f0&#xff08;\u5982\u201c\u7ba1\u7406\u5458\u201d\u201c\u8c03\u5ea6\u5458\u201d\u201c\u5206\u6790\u5e08\u201d&#xff09;\u200320\u2003VARCHAR(20)\u2003\u2014 \u00a0<\/p>\n<p>\u4e0a\u8ff0\u8868\u7ed3\u6784\u9075\u5faa\u7b2c\u4e00\u8303\u5f0f&#xff0c;\u4e3b\u952e\u552f\u4e00\u6807\u8bc6\u6bcf\u6761\u8bb0\u5f55&#xff1b;\u901a\u8fc7\u5916\u952e\u5173\u8054\u5b9e\u73b0\u7b2c\u4e8c\u8303\u5f0f&#xff1b;\u6240\u6709\u975e\u4e3b\u5c5e\u6027\u5747\u5b8c\u5168\u51fd\u6570\u4f9d\u8d56\u4e8e\u4e3b\u952e&#xff0c;\u907f\u514d\u7b2c\u4e09\u8303\u5f0f\u8fdd\u4f8b\u3002\u5b57\u6bb5\u7c7b\u578b\u4e0e\u957f\u5ea6\u9009\u53d6\u517c\u987e\u5b58\u50a8\u6548\u7387\u4e0e\u4e1a\u52a1\u9700\u6c42&#xff0c;\u652f\u6301\u540e\u7eed\u6269\u5c55\u4e0e\u7d22\u5f15\u4f18\u5316\u3002<\/p>\n<p>\u5341\u3001\u5efa\u8868\u8bed\u53e5<\/p>\n<p>CREATE TABLE Vehicle (<br \/>\n\u00a0 \u00a0 vehicle_id \u00a0 \u00a0 VARCHAR(10) \u00a0 NOT NULL,<br \/>\n\u00a0 \u00a0 license_plate \u00a0VARCHAR(15),<br \/>\n\u00a0 \u00a0 vehicle_type \u00a0 VARCHAR(20),<br \/>\n\u00a0 \u00a0 capacity_kg \u00a0 \u00a0INT,<br \/>\n\u00a0 \u00a0 status_flag \u00a0 \u00a0TINYINT(1) \u00a0 DEFAULT 0,<br \/>\n\u00a0 \u00a0 PRIMARY KEY (vehicle_id)<br \/>\n) ENGINE&#061;InnoDB DEFAULT CHARSET&#061;utf8mb4 COMMENT&#061;&#039;\u8f66\u8f86\u57fa\u672c\u4fe1\u606f\u8868&#039;;<\/p>\n<p>CREATE TABLE Order (<br \/>\n\u00a0 \u00a0 order_id \u00a0 \u00a0 \u00a0 \u00a0VARCHAR(20) \u00a0 NOT NULL,<br \/>\n\u00a0 \u00a0 pickup_latitude \u00a0DECIMAL(10,6),<br \/>\n\u00a0 \u00a0 pickup_longitude DECIMAL(10,6),<br \/>\n\u00a0 \u00a0 drop_latitude \u00a0 DECIMAL(10,6),<br \/>\n\u00a0 \u00a0 drop_longitude \u00a0DECIMAL(10,6),<br \/>\n\u00a0 \u00a0 scheduled_time \u00a0DATETIME,<br \/>\n\u00a0 \u00a0 actual_time \u00a0 \u00a0 DATETIME,<br \/>\n\u00a0 \u00a0 order_status \u00a0 \u00a0TINYINT(1) \u00a0 DEFAULT 0,<br \/>\n\u00a0 \u00a0 PRIMARY KEY (order_id)<br \/>\n) ENGINE&#061;InnoDB DEFAULT CHARSET&#061;utf8mb4 COMMENT&#061;&#039;\u8ba2\u5355\u4fe1\u606f\u8868&#039;;<\/p>\n<p>CREATE TABLE GPS_Record (<br \/>\n\u00a0 \u00a0 record_id \u00a0 \u00a0 \u00a0VARCHAR(20) \u00a0 NOT NULL,<br \/>\n\u00a0 \u00a0 vehicle_id \u00a0 \u00a0 VARCHAR(10) \u00a0 NOT NULL,<br \/>\n\u00a0 \u00a0 timestamp_utc \u00a0DATETIME \u00a0 \u00a0 \u00a0NOT NULL,<br \/>\n\u00a0 \u00a0 latitude \u00a0 \u00a0 \u00a0 DECIMAL(10,6),<br \/>\n\u00a0 \u00a0 longitude \u00a0 \u00a0 \u00a0DECIMAL(10,6),<br \/>\n\u00a0 \u00a0 speed_kmh \u00a0 \u00a0 \u00a0DECIMAL(5,2),<br \/>\n\u00a0 \u00a0 PRIMARY KEY (record_id),<br \/>\n\u00a0 \u00a0 INDEX idx_gps_vehicle (vehicle_id),<br \/>\n\u00a0 \u00a0 INDEX idx_gps_time \u00a0 (timestamp_utc),<br \/>\n\u00a0 \u00a0 CONSTRAINT fk_gps_vehicle<br \/>\n\u00a0 \u00a0 \u00a0 \u00a0 FOREIGN KEY (vehicle_id) REFERENCES Vehicle(vehicle_id)<br \/>\n\u00a0 \u00a0 \u00a0 \u00a0 ON UPDATE CASCADE ON DELETE CASCADE<br \/>\n) ENGINE&#061;InnoDB DEFAULT CHARSET&#061;utf8mb4 COMMENT&#061;&#039;\u8f66\u8f86\u8f68\u8ff9\u8bb0\u5f55\u8868&#039;;<\/p>\n<p>CREATE TABLE Weather_Observation (<br \/>\n\u00a0 \u00a0 weather_id \u00a0 \u00a0 \u00a0 \u00a0 \u00a0VARCHAR(20) \u00a0 NOT NULL,<br \/>\n\u00a0 \u00a0 region_code \u00a0 \u00a0 \u00a0 \u00a0 VARCHAR(10),<br \/>\n\u00a0 \u00a0 observation_time \u00a0 \u00a0DATETIME \u00a0 \u00a0 \u00a0NOT NULL,<br \/>\n\u00a0 \u00a0 temperature_celsius DECIMAL(5,2),<br \/>\n\u00a0 \u00a0 humidity_percent \u00a0 \u00a0DECIMAL(5,2),<br \/>\n\u00a0 \u00a0 wind_speed_kmh \u00a0 \u00a0 \u00a0DECIMAL(5,2),<br \/>\n\u00a0 \u00a0 PRIMARY KEY (weather_id),<br \/>\n\u00a0 \u00a0 INDEX idx_weather_region (region_code),<br \/>\n\u00a0 \u00a0 INDEX idx_weather_time \u00a0 (observation_time)<br \/>\n) ENGINE&#061;InnoDB DEFAULT CHARSET&#061;utf8mb4 COMMENT&#061;&#039;\u5929\u6c14\u89c2\u6d4b\u8868&#039;;<\/p>\n<p>CREATE TABLE Traffic_Observation (<br \/>\n\u00a0 \u00a0 traffic_id \u00a0 \u00a0 \u00a0 \u00a0 \u00a0VARCHAR(20) \u00a0 NOT NULL,<br \/>\n\u00a0 \u00a0 region_code \u00a0 \u00a0 \u00a0 \u00a0 VARCHAR(10),<br \/>\n\u00a0 \u00a0 observation_time \u00a0 \u00a0DATETIME \u00a0 \u00a0 \u00a0NOT NULL,<br \/>\n\u00a0 \u00a0 congestion_level \u00a0 \u00a0TINYINT(1) \u00a0 \u00a0DEFAULT 0,<br \/>\n\u00a0 \u00a0 PRIMARY KEY (traffic_id),<br \/>\n\u00a0 \u00a0 INDEX idx_traffic_region (region_code),<br \/>\n\u00a0 \u00a0 INDEX idx_traffic_time \u00a0 (observation_time)<br \/>\n) ENGINE&#061;InnoDB DEFAULT CHARSET&#061;utf8mb4 COMMENT&#061;&#039;\u4ea4\u901a\u62e5\u5835\u89c2\u6d4b\u8868&#039;;<\/p>\n<p>CREATE TABLE Demand_Prediction (<br \/>\n\u00a0 \u00a0 prediction_id \u00a0 \u00a0 \u00a0VARCHAR(20) \u00a0 NOT NULL,<br \/>\n\u00a0 \u00a0 region_code \u00a0 \u00a0 \u00a0 \u00a0VARCHAR(10),<br \/>\n\u00a0 \u00a0 forecast_time_utc \u00a0DATETIME \u00a0 \u00a0 \u00a0NOT NULL,<br \/>\n\u00a0 \u00a0 predicted_order_count INT,<br \/>\n\u00a0 \u00a0 PRIMARY KEY (prediction_id),<br \/>\n\u00a0 \u00a0 INDEX idx_pred_region (region_code),<br \/>\n\u00a0 \u00a0 INDEX idx_pred_time \u00a0 (forecast_time_utc)<br \/>\n) ENGINE&#061;InnoDB DEFAULT CHARSET&#061;utf8mb4 COMMENT&#061;&#039;\u9700\u6c42\u9884\u6d4b\u8868&#039;;<\/p>\n<p>CREATE TABLE Optimization_Plan (<br \/>\n\u00a0 \u00a0 plan_id \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0VARCHAR(20) \u00a0 NOT NULL,<br \/>\n\u00a0 \u00a0 vehicle_id \u00a0 \u00a0 \u00a0 \u00a0 VARCHAR(10),<br \/>\n\u00a0 \u00a0 start_time_utc \u00a0 \u00a0 DATETIME \u00a0 \u00a0 \u00a0NOT NULL,<br \/>\n\u00a0 \u00a0 end_time_utc \u00a0 \u00a0 \u00a0 DATETIME \u00a0 \u00a0 \u00a0NOT NULL,<br \/>\n\u00a0 \u00a0 route_polyline \u00a0 \u00a0 VARCHAR(5000),<br \/>\n\u00a0 \u00a0 plan_status \u00a0 \u00a0 \u00a0 \u00a0TINYINT(1) \u00a0 \u00a0DEFAULT 0,<br \/>\n\u00a0 \u00a0 PRIMARY KEY (plan_id),<br \/>\n\u00a0 \u00a0 INDEX idx_plan_vehicle (vehicle_id),<br \/>\n\u00a0 \u00a0 INDEX idx_plan_start \u00a0 (start_time_utc),<br \/>\n\u00a0 \u00a0 CONSTRAINT fk_plan_vehicle<br \/>\n\u00a0 \u00a0 \u00a0 \u00a0 FOREIGN KEY (vehicle_id) REFERENCES Vehicle(vehicle_id)<br \/>\n\u00a0 \u00a0 \u00a0 \u00a0 ON UPDATE CASCADE ON DELETE SET NULL<br \/>\n) ENGINE&#061;InnoDB DEFAULT CHARSET&#061;utf8mb4 COMMENT&#061;&#039;\u8c03\u5ea6\u4f18\u5316\u65b9\u6848\u8868&#039;;<\/p>\n<p>CREATE TABLE Alarm (<br \/>\n\u00a0 \u00a0 alarm_id \u00a0 \u00a0 \u00a0 \u00a0 \u00a0VARCHAR(20) \u00a0 NOT NULL,<br \/>\n\u00a0 \u00a0 vehicle_id \u00a0 \u00a0 \u00a0 \u00a0VARCHAR(10),<br \/>\n\u00a0 \u00a0 order_id \u00a0 \u00a0 \u00a0 \u00a0 \u00a0VARCHAR(20),<br \/>\n\u00a0 \u00a0 alarm_type \u00a0 \u00a0 \u00a0 \u00a0VARCHAR(20),<br \/>\n\u00a0 \u00a0 alarm_time_utc \u00a0 \u00a0DATETIME \u00a0 \u00a0 \u00a0NOT NULL,<br \/>\n\u00a0 \u00a0 description \u00a0 \u00a0 \u00a0 VARCHAR(2000),<br \/>\n\u00a0 \u00a0 PRIMARY KEY (alarm_id),<br \/>\n\u00a0 \u00a0 INDEX idx_alarm_vehicle (vehicle_id),<br \/>\n\u00a0 \u00a0 INDEX idx_alarm_order \u00a0 (order_id),<br \/>\n\u00a0 \u00a0 CONSTRAINT 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