数据库设计教学管理系统实例

Delegates staff Hello in the run up to the Spring Festival we held one session of four staff representatives Conference 2013 workshop full back in 2012 careful analysis of the current situation discuss 2013 development plans Here on behalf of my company 2013 work reports to the General Assembly for consideration Pillar I 2012 back in 2012 XX power companies adhere to the party s 17 great spirit for guidance comprehensively implement the scientific concept of development promoting cost leadership strategy standards focus on implementation lean management continuously improve smooth present safety situation of enterprise management business management and control scientific and standardized and the dedication of staff manage a harmonious and democratic atmosphere of the good situation Main indicators are as follows the battery indicator power generation totaled 7 815 billion kWh beyond the annual budget implementation capacity of 315 million kWh an increase of 757 million kWh Sales totaled 7 425 billion kWh exceeding sales of 330 million kWh the annual Executive budget an increase of 729 million kWh Security measures unplanned outages 2 5 times No personal injury accident occurred no major accident and above no major fire accidents without environmental pollution accidents safety for three consecutive years to maintain stability to good posture Business financial indicators total profits of 255 million Yuan beyond the annual budget of 207 million Yuan beyond the Datang company index 41 89 million Yuan an increase of 1 76 million Yuan FCM assessment at grade four Energy power supply standard coal completing 312 25 g kWh down 0 1 g kWh integrated auxiliary power consumption ratio in 5 12 down 0 26 pollutant emissions performance greatly reduced compared to last year carbon 0 09 g kWh sulfur dioxide 0 104 g kWh NOx 0 512 g kWh dust removal efficiency of more than 99 8 Reliability index equivalent availability factor in 93 47 increased 7 95 from a year earlier Equivalent forced outage rate 0 08 0 16 reduction over the same period a year earlier Major achievements first we should adhere to the two management system basis strengthening technological research strengthen hidden hazards control and intrinsic safety Enterprise construction took new steps The two management system for improvement Focus on promoting the power of the company management system and the application and implementation of the safety loop five star management system improve the safety management system realize the system of safety control Further regulate security routines safety supervision and management network role to play to achieve closed loop Strengthening the supervision and management of habitual violation of strengthening the safety supervision of outsourcing contractors Carried out in spring and autumn of security inspections flood control and inspection safety production month day supervision of production safety and the Olympic Games and other activities comprehensive and tamping Safety Foundation Troubleshooting management mechanism give full play to role of technical supervision and realization of troubleshooting management improved process management This year completed the boiler lower header leakage boiler pressure a major risk management completed 29 of great risks and 3 General problems of governance Complete chemistry lab construction thermal control and complete the boiler scale integrated management host shafting vibration of 10 scientific and technological projects such as Complete supercritical 630MW on line simulation system development and application of circulating water MCC standby power transformation the transformation of desulfurization waste water the unit water supply system of comprehensive treatment and discharge valve modification of coal mill 5 key technological transformation projects group health is improved Science and technology innovation is further increased Strengthen the characteristics of supercritical unit major issues gradually clearing the particularity of supercritical unit and regularity Developed motor oil time management switch action times statistics coal aided measurement software improves the production level of lean management Increased investment in science and technology reporting science and technology projects and 14 technical project total cost percentage of the total annual production output of 0 25 Large scale coal fired power plant flue gas desulfurization denitrification complete development and application of key technologies project won the national science and technology progress second prize 630MW supercritical units optimized control strategies and the 630MW development and application of on line simulation system for supercritical units supercritical 600MW units of turbine driven boiler feed pump set of comprehensive treatment of defects Datang technology respectively one or two and third Meanwhile information technology achievements the company was named China power information technology benchmarking enterprises Repair and maintenance has improved further Modify the inspection standards and standards on a regular basis standardizing work procedures checking and inspection project Deepening the BFS system and implements maintenance information shared Reorganizing RB logic again and ensure the success of the RB Innovating the mechanism of maintenance management implemented a project manager system Successful completion of two autonomous maintenance reliability improved steadily Implementing two c level maintenance project themselves 48 7 and 42 3 respectively Accomplish two circulating pumps repair and overhaul of four Mills maintenance teams to get exercise Promote the work of energy saving and consumption reducing complete the unit energy consumption diagnosis plant water balance test 10 energy saving projects Second we should adhere to three on the economic benefits of improving outreach 数据库设计数据库设计 一 需求分析一 需求分析 设计和开发应用系统的第一步就是进行需求分析 了解用户对数据库系统的基本要求 例如 教学管理人员及教师通过该系统可以对全校教师信息 系部信息 课程信息和学生 信息进行添加 删除 修改和查询等操作 教师通过该系统可以对所教课程进行成绩的登 记管理 另外 通过该系统还可以对学生选课情况进行汇总分析 产生报表等 系统主界面如图 根据需求分析 划分以下功能模块 教学管理系统 系部信息的添加 删除 修改 教师信息的添加 删除 修改 学生信息的添加 删除 修改 课程信息的添加 删除 修改 基本信息管理 选课信息的添加 删除 修改 查看个人情况 教师信息 查看授课情况 查看个人情况 学生信息 查看各班学生情况 课程信息查看各学期的开课情况 按学生查看 信息查询 选课信息 按课程查看 按教师对授课情况汇总分析 报表 按班级对成绩汇总分析 报表 按学生对成绩汇总分析 报表 信息汇总和分析 按班级和课程对成绩汇总分析 数据透视表 Delegates staff Hello in the run up to the Spring Festival we held one session of four staff representatives Conference 2013 workshop full back in 2012 careful analysis of the current situation discuss 2013 development plans Here on behalf of my company 2013 work reports to the General Assembly for consideration Pillar I 2012 back in 2012 XX power companies adhere to the party s 17 great spirit for guidance comprehensively implement the scientific concept of development promoting cost leadership strategy standards focus on implementation lean management continuously improve smooth present safety situation of enterprise management business management and control scientific and standardized and the dedication of staff manage a harmonious and democratic atmosphere of the good situation Main indicators are as follows the battery indicator power generation totaled 7 815 billion kWh beyond the annual budget implementation capacity of 315 million kWh an increase of 757 million kWh Sales totaled 7 425 billion kWh exceeding sales of 330 million kWh the annual Executive budget an increase of 729 million kWh Security measures unplanned outages 2 5 times No personal injury accident occurred no major accident and above no major fire accidents without environmental pollution accidents safety for three consecutive years to maintain stability to good posture Business financial indicators total profits of 255 million Yuan beyond the annual budget of 207 million Yuan beyond the Datang company index 41 89 million Yuan an increase of 1 76 million Yuan FCM assessment at grade four Energy power supply standard coal completing 312 25 g kWh down 0 1 g kWh integrated auxiliary power consumption ratio in 5 12 down 0 26 pollutant emissions performance greatly reduced compared to last year carbon 0 09 g kWh sulfur dioxide 0 104 g kWh NOx 0 512 g kWh dust removal efficiency of more than 99 8 Reliability index equivalent availability factor in 93 47 increased 7 95 from a year earlier Equivalent forced outage rate 0 08 0 16 reduction over the same period a year earlier Major achievements first we should adhere to the two management system basis strengthening technological research strengthen hidden hazards control and intrinsic safety Enterprise construction took new steps The two management system for improvement Focus on promoting the power of the company management system and the application and implementation of the safety loop five star management system improve the safety management system realize the system of safety control Further regulate security routines safety supervision and management network role to play to achieve closed loop Strengthening the supervision and management of habitual violation of strengthening the safety supervision of outsourcing contractors Carried out in spring and autumn of security inspections flood control and inspection safety production month day supervision of production safety and the Olympic Games and other activities comprehensive and tamping Safety Foundation Troubleshooting management mechanism give full play to role of technical supervision and realization of troubleshooting management improved process management This year completed the boiler lower header leakage boiler pressure a major risk management completed 29 of great risks and 3 General problems of governance Complete chemistry lab construction thermal control and complete the boiler scale integrated management host shafting vibration of 10 scientific and technological projects such as Complete supercritical 630MW on line simulation system development and application of circulating water MCC standby power transformation the transformation of desulfurization waste water the unit water supply system of comprehensive treatment and discharge valve modification of coal mill 5 key technological transformation projects group health is improved Science and technology innovation is further increased Strengthen the characteristics of supercritical unit major issues gradually clearing the particularity of supercritical unit and regularity Developed motor oil time management switch action times statistics coal aided measurement software improves the production level of lean management Increased investment in science and technology reporting science and technology projects and 14 technical project total cost percentage of the total annual production output of 0 25 Large scale coal fired power plant flue gas desulfurization denitrification complete development and application of key technologies project won the national science and technology progress second prize 630MW supercritical units optimized control strategies and the 630MW development and application of on line simulation system for supercritical units supercritical 600MW units of turbine driven boiler feed pump set of comprehensive treatment of defects Datang technology respectively one or two and third Meanwhile information technology achievements the company was named China power information technology benchmarking enterprises Repair and maintenance has improved further Modify the inspection standards and standards on a regular basis standardizing work procedures checking and inspection project Deepening the BFS system and implements maintenance information shared Reorganizing RB logic again and ensure the success of the RB Innovating the mechanism of maintenance management implemented a project manager system Successful completion of two autonomous maintenance reliability improved steadily Implementing two c level maintenance project themselves 48 7 and 42 3 respectively Accomplish two circulating pumps repair and overhaul of four Mills maintenance teams to get exercise Promote the work of energy saving and consumption reducing complete the unit energy consumption diagnosis plant water balance test 10 energy saving projects Second we should adhere to three on the economic benefits of improving outreach 二 概念结构设计二 概念结构设计 三 逻辑结构设计三 逻辑结构设计 ER 图转换成数据库关系模型需要 5 个表 四个实体 一个关系 1 系部 表 系号 系名 系主任 2 教师 表 教师编号 姓名 性别 出生日期 系号 职称 电话号码 E mail 简历 照片 3 学生 表 学号 姓名 性别 出生日期 系号 班级 货款否 简历 照片 4 课程 表 课程号 课程名 学分 教师编号 开课学期 5 选课 表 学号 课程号 成绩 课程 授课 系部 学生 选课 教师 管理 n 包含 1 1 n m n n 1 成绩 Delegates staff Hello in the run up to the Spring Festival we held one session of four staff representatives Conference 2013 workshop full back in 2012 careful analysis of the current situation discuss 2013 development plans Here on behalf of my company 2013 work reports to the General Assembly for consideration Pillar I 2012 back in 2012 XX power companies adhere to the party s 17 great spirit for guidance comprehensively implement the scientific concept of development promoting cost leadership strategy standards focus on implementation lean management continuously improve smooth present safety situation of enterprise management business management and control scientific and standardized and the dedication of staff manage a harmonious and democratic atmosphere of the good situation Main indicators are as follows the battery indicator power generation totaled 7 815 billion kWh beyond the annual budget implementation capacity of 315 million kWh an increase of 757 million kWh Sales totaled 7 425 billion kWh exceeding sales of 330 million kWh the annual Executive budget an increase of 729 million kWh Security measures unplanned outages 2 5 times No personal injury accident occurred no major accident and above no major fire accidents without environmental pollution accidents safety for three consecutive years to maintain stability to good posture Business financial indicators total profits of 255 million Yuan beyond the annual budget of 207 million Yuan beyond the Datang company index 41 89 million Yuan an increase of 1 76 million Yuan FCM assessment at grade four Energy power supply standard coal completing 312 25 g kWh down 0 1 g kWh integrated auxiliary power consumption ratio in 5 12 down 0 26 pollutant emissions performance greatly reduced compared to last year carbon 0 09 g kWh sulfur dioxide 0 104 g kWh NOx 0 512 g kWh dust removal efficiency of more than 99 8 Reliability index equivalent availability factor in 93 47 increased 7 95 from a year earlier Equivalent forced outage rate 0 08 0 16 reduction over the same period a year earlier Major achievements first we should adhere to the two management system basis strengthening technological research strengthen hidden hazards control and intrinsic safety Enterprise construction took new steps The two management system for improvement Focus on promoting the power of the company management system and the application and implementation of the safety loop five star management system improve the safety management system realize the system of safety control Further regulate security routines safety supervision and management network role to play to achieve closed loop Strengthening the supervision and management of habitual violation of strengthening the safety supervision of outsourcing contractors Carried out in spring and autumn of security inspections flood control and inspection safety production month day supervision of production safety and the Olympic Games and other activities comprehensive and tamping Safety Foundation Troubleshooting management mechanism give full play to role of technical supervision and realization of troubleshooting management improved process management This year completed the boiler lower header leakage boiler pressure a major risk management completed 29 of great risks and 3 General problems of governance Complete chemistry lab construction thermal control and complete the boiler scale integrated management host shafting vibration of 10 scientific and technological projects such as Complete supercritical 630MW on line simulation system development and application of circulating water MCC standby power transformation the transformation of desulfurization waste water the unit water supply system of comprehensive treatment and discharge valve modification of coal mill 5 key technological transformation projects group health is improved Science and technology innovation is further increased Strengthen the characteristics of supercritical unit major issues gradually clearing the particularity of supercritical unit and regularity Developed motor oil time management switch action times statistics coal aided measurement software improves the production level of lean management Increased investment in science and technology reporting science and technology projects and 14 technical project total cost percentage of the total annual production output of 0 25 Large scale coal fired power plant flue gas desulfurization denitrification complete development and application of key technologies project won the national science and technology progress second prize 630MW supercritical units optimized control strategies and the 630MW development and application of on line simulation system for supercritical units supercritical 600MW units of turbine driven boiler feed pump set of comprehensive treatment of defects Datang technology respectively one or two and third Meanwhile information technology achievements the company was named China power information technology benchmarking enterprises Repair and maintenance has improved further Modify the inspection standards and standards on a regular basis standardizing work procedures checking and inspection project Deepening the BFS system and implements maintenance information shared Reorganizing RB logic again and ensure the success of the RB Innovating the mechanism of maintenance management implemented a project manager system Suc