1、武漢工業學院數據庫應用系統設計實驗報告 學號： 090501102 姓名： 畢 波 班級: 計算機091 指導教師： 人事工資管理系統設計總說明：在當今社會，工資管理是一項必要而且很關鍵的工作。現在隨著企業數量的急劇增加，處理人們的工資數據變的越來越煩瑣艱巨。如今，計算機已經普及到了幾乎每個學校、家庭，我們的學習和生活已經處處離不開計算機的存在。本系統依據開發要求主要應用于企業人事系統，完成對日常的工資增刪查改的數字化管理。比較系統地對員工的信息和工資進行管理，查詢、增添、修改、刪除都變的非常簡便，節省了大量的工作量。本課程設計是在學習了數據庫應用系統和相關開發軟件課程之后，讓學生通過實際項目

2、的設計、開發，培養學生獨立進行數據庫軟件的建模、在計算機中進行數據庫設計、并通過相關軟件開發系統的能力。本系統的基本功能包括：部門信息的管理（查詢、添加、修改、刪除學生部門等）、職員信息的管理（錄入、查詢、修改、刪除員工的信息等）、工資信息的管理（錄入、查詢、修改員工的工資等）。本系統主要用于對員工工資進行管理，能夠進行插入、刪除、修改、查詢和顯示員工的信息。登錄該系統時，用戶需要輸入口令和密碼，以確保數據的安全性，成功登錄的用戶，可以插入員工的信息和工資，并對員工的信息和工資進行增、刪、改操作。基于上述想法，我們將員工數據保存到數據庫中。我們要求系統能夠高效快速的處理數據，并且要保證數據的正

3、確性、相容性和安全性。所以在數據庫中需要定義很多觸發器，比如刪除了某個員工的信息則刪除對應的所有工資信息、活著刪除了某部門則刪除該部門所有的信息等。所以我們要從數據庫中讀取數據，并且和界面聯系起來，同時也能將用戶界面上的數據存儲到數據庫中。以上是設計此系統應該注意的地方和設計原則，以下就是遵循這些原則和標準設計出的一套完整的管理系統。 一 系統需求：根據題目需求，可以把系統分為三個部分：部門信息管理部分、職員信息管理部分和工資信息管理部分。本次實驗中，我主要負責部門信息管理模塊，題中需要對部門信息進行查詢、添加、修改、刪除操作，這些操作按是否改變數據庫數據可分為兩類：查詢操作，只讀取數據庫信息

4、，不對信息做修改；刪除、更新和添加操作，需要對數據庫中的數據進行讀寫操作。因此只要寫兩部分代碼，查詢部分:deptinfo_Query進行部門信息查詢，查詢數據庫信息；信息管理部分：deptinfo_Manage，對信息進行更新、增加和刪除。二 數據庫設計1.數據需求人事工資管理系統需要完成的主要功能有：1員工的基本信息錄入2.工資信息表的錄入。3.部門信息表的查詢、插入、修改、刪除等操作。2.相關表表1 職工表：Employee_Info表2 工資表：Salary表3 部門表：Dept_Info表4 系統用戶表：User_Info3.數據流程圖人事工資管理系統登錄 系統管理員職工表部門表工資

5、表圖 數據流程圖三 員工工資相關操作 1.查詢部分 相關代碼： dateGrid1數據綁定 private void BindData(String sql) SqlConnection connection = new SqlConnection(connString); SqlDataAdapter dataAdapter = new SqlDataAdapter(sql, connection); DataSet dataSet = new DataSet(); dataAdapter.Fill(dataSet); dataGridView1.DataSource = dataSet.T

6、ables0; dataGridView1.Columns0.DataPropertyName = "職¡ã工¡è號?" dataGridView1.Columns1.DataPropertyName = "年份" dataGridView1.Columns2.DataPropertyName = "月份" dataGridView1.Columns3.DataPropertyName = "工資º" 部門組合框的數據綁定 private void BindDept

7、ComBox() string sql = "SELECT * FROM Dept_Info" SqlConnection connection = new SqlConnection(connString); SqlDataAdapter dataAdapter = new SqlDataAdapter(sql, connection); DataSet dataSet = new DataSet(); dataAdapter.Fill(dataSet); DeptcomBox.DataSource = dataSet.Tables0; DeptcomBox.Displa

8、yMember = "DeptName" DeptcomBox.ValueMember = "DeptID" DeptcomBox.SelectedIndex = 0; 按部門查詢 private void check1_CheckedChanged(object sender, EventArgs e) if (check1.Checked) btnYes.Enabled = true; DeptcomBox.Enabled = true; check4.Checked = false; check4.Enabled = false; else Dep

9、tcomBox.Enabled = false; check4.Enabled = true; 按年份查詢 private void check2_CheckedChanged(object sender, EventArgs e) btnYes.Enabled = true; if (check2.Checked) YearComBox.Enabled = true; else YearComBox.Enabled = false; YearComBox.SelectedIndex = 0; 按月份Y查詢 private void check3_CheckedChanged(object s

10、ender, EventArgs e) if (check3.Checked) btnYes.Enabled = true; MonthComBox.Enabled = true; else MonthComBox.Enabled = false; 僅查詢自己的工資 private void check4_CheckedChanged(object sender, EventArgs e) if (check4.Checked) btnYes.Enabled = true; check1.Enabled = false; DeptcomBox.Enabled = false; else che

11、ck1.Enabled = true; check1.Checked = false; private void btnYes_Click(object sender, EventArgs e) count = 0; String YearStr; int MonthStr; String DeptStr; String sqlStr = "" sql = "" DeptStr = Convert.ToString(DeptcomBox.SelectedValue.ToString(); 部門號 if (check1.Checked) DeptStr =

12、 Convert.ToString(DeptcomBox.SelectedValue.ToString(); sqlStr = String.Format("select Salary.EmpID as '職工號', Year as '年份', Month as '月份', Salary as '工資º' from Salary,Employee_Info where DeptID='0'and Salary.EmpID=Employee_Info.EmpID", DeptStr);

13、if (count = 0) sql += sqlStr; count = 1; else sql += " intersect " + sqlStr; check1.Checked = false; 年份 if (check2.Checked) YearStr = Convert.ToString(YearComBox.SelectedItem.ToString(); if(this.mainForm.operatorRight=2) sqlStr = String.Format("select EmpID as '職工號', Year as &

14、#39;年份', Month as '月份', Salary as '工資' from Salary where Year='0'", YearStr); else if(this.mainForm.operatorRight=1) sqlStr = String.Format("select Salary.EmpID as '職工號', Year as '年份', Month as '月', Salary as '工資' from Salary,Empl

15、oyee_Info,Dept_Info where Year='0'and Salary.EmpID=Employee_Info.EmpID and Employee_Info.DeptID=Dept_Info.DeptID and Dept_Info.DeptID in (select DeptID from Employee_Info where EmpID='1')", YearStr,this.mainForm.person.userName); else sqlStr = String.Format("select EmpID as

16、 '職工號', Year as '年份', Month as '月份', Salary as '工資Á' from Salary where Year='0'and EmpID='1'", YearStr,this.mainForm.person.userName); if (count = 0) sql += sqlStr; count = 1; else sql += " intersect " + sqlStr; check2.Checked = fal

17、se; 月份 if (check3.Checked) MonthStr = Convert.ToInt32(MonthComBox.SelectedItem.ToString(); if (this.mainForm.operatorRight = 2) sqlStr = String.Format("select EmpID as '職工號', Year as '年份', Month as '月份', Salary as '工資' from Salary where Month='0'", M

18、onthStr); else if (this.mainForm.operatorRight = 1) sqlStr = String.Format("select Salary.EmpID as '職工號', Year as '年份', Month as '月份', Salary as '工資' from Salary,Employee_Info,Dept_Info where Month='0'and Salary.EmpID=Employee_Info.EmpID and Employee_Info

19、.DeptID=Dept_Info.DeptID and Dept_Info.DeptID in (select DeptID from Employee_Info where EmpID='1')", MonthStr, this.mainForm.person.userName); else sqlStr = String.Format("select EmpID as '職工號', Year as '年份', Month as '月份', Salary as '工' from Salary

20、 where Month='0' and EmpID='1'", MonthStr,this.mainForm.person.userName); if (count = 0) sql += sqlStr; count = 1; else sql += " intersect " + sqlStr; check3.Checked = false; 自己工資 if (check4.Checked) sql = String.Format("select EmpID as '職工號', Year as '

21、;年份', Month as '月份', Salary as '工資' from Salary where EmpID='0'", this.mainForm.person.userName); if (count = 0) sql += sqlStr; count = 1; else sql += " intersect " + sqlStr; check4.Checked = false; SqlCommand command = new SqlCommand(sql, connection); try

22、connection.Open(); SqlDataReader data = command.ExecuteReader(); if (data.Read() BindData(sql); else if(this.mainForm.operatorRight=2) sql = String.Format("select EmpID as '職工號', Year as '年份', Month as '月份', Salary as '工資' from Salary"); else if (this.mainFo

23、rm.operatorRight = 1) sql = String.Format("select Salary.EmpID as '職工號', Year as '年份', Month as '月份', Salary as '工資' from Salary,Employee_Info,Dept_Info where Salary.EmpID=Employee_Info.EmpID and Employee_Info.DeptID=Dept_Info.DeptID and Dept_Info.DeptID in (sele

24、ct DeptID from Employee_Info where EmpID='0')", this.mainForm.person.userName); else sql = String.Format("select EmpID as '職工號', Year as '年份', Month as '月份', Salary as '工資' from Salary where EmpID='0'", this.mainForm.person.userName); Bi

25、ndData(sql); MessageBox.Show("查詢失敗,沒有符合要求的工資信息", "查找失敗ã", MessageBoxButtons.OK, MessageBoxIcon.Exclamation); catch (Exception ex) MessageBox.Show(ex.Message, "數據庫操作失敗¹", MessageBoxButtons.OK, MessageBoxIcon.Exclamation); finally connection.Close(); private voi

26、d LoadOrCancel() mainForm = (MainForm)this.ParentForm; YearComBox.SelectedIndex = 0; MonthComBox.SelectedIndex = 0; YearComBox.Enabled = false; MonthComBox.Enabled = false; DeptcomBox.Enabled = false; btnYes.Enabled = false; BindDeptComBox(); if (this.mainForm.operatorRight = 2) sql = String.Format(

27、"select EmpID as '職工號', Year as '年份', Month as '月份', Salary as '工資' from Salary"); else if (this.mainForm.operatorRight = 1) DeptcomBox.Visible = false; check1.Visible = false; sql = String.Format("select Salary.EmpID as '職工號', Year as '年份&#

28、39;, Month as '月份', Salary as '工資' from Salary,Employee_Info,Dept_Info where Salary.EmpID=Employee_Info.EmpID and Employee_Info.DeptID=Dept_Info.DeptID and Dept_Info.DeptID in (select DeptID from Employee_Info where EmpID='0')", this.mainForm.person.userName); else check

29、1.Visible = false; check4.Visible = false; DeptcomBox.Visible = false; sql = String.Format("select EmpID as '職工號', Year as '年份', Month as '月份', Salary as '工資' from Salary where EmpID='0'", this.mainForm.person.userName); BindData(sql); count = 0; pri

30、vate void groupBox2_Enter(object sender, EventArgs e) 2.對表的增刪改部分： ataGrid數據綁定 private void BindData() sql = String.Format("select EmpID as '職工號', Year as '年份', Month as '月份', Salary as ' 工資' from Salary"); SqlConnection connection = new SqlConnection(connStr

31、ing); SqlDataAdapter dataAdapter = new SqlDataAdapter(sql, connection); DataSet dataSet = new DataSet(); dataAdapter.Fill(dataSet); dataGridView1.DataSource = dataSet.Tables0; dataGridView1.Columns0.DataPropertyName = "職工號" dataGridView1.Columns1.DataPropertyName = "年份" dataGridV

32、iew1.Columns2.DataPropertyName = "月份" dataGridView1.Columns3.DataPropertyName = "工資" 刪除 private void btn3_Click(object sender, EventArgs e) cleartext(); textreadwrite(); btnOkOrCancel(); combMonth.Enabled = true; combYear.Enabled = true; txt4.ReadOnly = true; opterate = "del

33、ete" 修改或更新職工工資信息 private void btnOk_Click(object sender, EventArgs e) btnOkOrCancel(); btnOk.Enabled = false; EmpID = txt1.Text; Year = Convert.ToString(combYear.SelectedItem.ToString(); Month = Convert.ToInt32(combMonth.SelectedItem.ToString(); String salary = txt4.Text; if (salary = "&qu

34、ot;) salary = "0" Salary = (float)Convert.ToDouble(salary.Trim(); int num = 0; try if (EmpID != "") sql = String.Format("select count (*) from Employee_Info where EmpID='0'", EmpID); SqlCommand command = new SqlCommand(sql, connection); connection.Open(); int c

35、= (int)command.ExecuteScalar(); connection.Close(); if (c > 0) connection = new SqlConnection(connString); connection.Open(); sql = String.Format("select count (*) from Salary where EmpID='0'and Year='1' and Month='2'", EmpID, Year, Month); SqlCommand mycmd = new

36、 SqlCommand(sql, connection); num = (int)mycmd.ExecuteScalar(); connection.Close(); 職工的工資信息存在 if (num > 0) if (opterate = "insert") MessageBox.Show("錄入不成功，您要錄入的員工的工資信息已存在！", "錄入失敗", MessageBoxButtons.OK, MessageBoxIcon.Exclamation); textreadonly(); else if (opterate

37、= "update") sql = String.Format("update Salary set Salary='0'where EmpID='1' and Year='2' and Month='3'", Salary, EmpID, Year, Month); connection.Open(); command = new SqlCommand(sql, connection); command.ExecuteNonQuery(); connection.Close(); Bind

38、Data(); textreadonly(); MessageBox.Show("更新成功！ ", "更新成功", MessageBoxButtons.OK, MessageBoxIcon.Exclamation); else connection.Open(); sql = String.Format("delete from Salary where EmpID='0'and Year='1' and Month='2'", EmpID, Year, Month); command

39、= new SqlCommand(sql, connection); command.ExecuteNonQuery(); connection.Close(); BindData(); MessageBox.Show("刪除成功！ ", "刪除成功", MessageBoxButtons.OK, MessageBoxIcon.Exclamation); textreadonly(); else if (opterate = "insert") sql = String.Format("insert into Salary(

40、EmpID,Year,Month,Salary)values ('0','1','2','3')", EmpID, Year, Month, Salary); command = new SqlCommand(sql, connection); connection.Open(); command.ExecuteNonQuery(); connection.Close(); BindData(); MessageBox.Show("錄入成功！ ", "錄入成功", MessageBoxButtons.OK, MessageBoxIcon.Exclamation); textreadonly(); else if (opterate = "update") MessageBox.Show("修改失敗，不存在要修改的工資信息！ ", "修T改失敗", MessageBoxButtons.OK, MessageBoxIcon.E