Bank Management System in VB 6.0 using MS Access Database

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In this article, you will create an application in visual basic 6.0 with Microsoft access database as a back-end to manage customer transactions and bank employee details. This project is called bank management system in vb 6.0 using ms access.

The bank management system in vb 6.0 using ms access. must do the following tasks.

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  • INSERT, DELETE, UPDATE records of Employees and Customers.
  • Keep track of customer transactions. A customer is allowed to withdraw and deposit money, not exceeding the balance in the account.
  • Bank employees only work for the branch with unique code.
  • Customer and Bank employee can log into there account with user id and password.

The system will be developed in following ways.

  • Develop System Design
  • Data Model [ E-R Diagram] 
  • User Interface in VB 6.0
  • Code the different Modules
  • Verify the Output

SYSTEM MODEL

System Diagram -bank management system in vb 6.0 using ms access.

DATA MODEL

E-R Diagram

ER Diagram – System Diagram -bank management system in vb 6.0 using ms access.

Tables

Using the E-R Diagram we can create a relational model of the database. It means we can create tables with the database. To create a new database go to the Microsoft Access Database and create a new blank database. If you have MS Access 2007 or Higher save the database with (.mdb) extension. Otherwise, Visual Basic 6 may not recognize the database file.

Create three four tables within the database with appropriate data-types given in the following figures.

Branch Table – Bank Management System
Customer Table – Bank Management System
Transaction Table – Bank Management System
Employee Table – Bank Management System

MODULES AND FORMS

The modules used in this application are given below

  • frmBankManagement
  • frmLogin
  • frmMENU(MDI Form)
  • frmBranch
  • frmCustomer
  • frmEmployee
  • frmTransaction
  • Module1.bas

Components of frmBankManagement

FORM -bank management system in vb 6.0 using ms access.

Labels:

Name : lblBankManagement
Caption : Bank Management System

Buttons:

Name : cmdLogin
Caption : LOGIN

Code for frmBankMangement

Private Sub cmdLogin_Click()
    Unload Me
    frmLogin.Show
End Sub

Components of frmLogin

Form Login – Bank Management System

Labels

Name : lblUserID
Caption : UserID
Name : lblPassword
Caption : Password

Text-boxes

Name : txtUserID
Text : 'leave blank'
Name : txtPassword
Text : Password

Buttons

Name : cmdLogin
Caption : Login
Name : cmdCancel
Caption : Cancel

Code for frmLogin

Option Explicit
Public LoginSucceeded As Boolean
Private Sub cmdCancel_Click()
    'set the global var to false 'to denote a failed login
    LoginSucceeded = False
    Me.Hide
End Sub
Private Sub cmdLogin_Click()
    rs.CursorLocation = adUseClient rec.CursorLocation
    = adUseClient rec.Open "SELECT * FROM Employee", con,
    adOpenDynamic, adLockPessimistic rs.Open
    "SELECT * FROM Customer", con, adOpenDynamic, adLockOptimistic
    'check the username
    While Not rs.EOF
    If txtUserID = rs!AccountNo And txtPassword = rs!Password Then
    frmMENU.Show
    LoginSucceeded = True
    con.Close MsgBox ("Connection Closed")
    Exit Sub
    Unload Me
    ElseIf
    Val(txtUserID) = rec!EID And txtPassword
    = rec!Password Then
    frmMENU.Show LoginSucceeded = True
    con.Close
    MsgBox ("Connection Closed")
    Exit Sub
    Unload Me
    ElseIf
    Val(txtUserID) <> rs!AccountNo Then
    rs.MoveNext ElseIf Val(txtUserID) <>
    rec!EID Then rec.MoveNext
    Else
    MsgBox "Invalid Password, try again!", ,
    "Login" txtPassword.SetFocus
    SendKeys "{Home}+{End}"
    Exit Sub
    End If
    Wend
    rs.Close
    rec.Close
End Sub
Private Sub Form_Load()
    Call loadcon
    MsgBox ("Connected")
End Sub

Components for frmBranch

Form Bank Branch -bank management system in vb 6.0 using ms access.
Form Bank Branch – Bank Management Sys

Labels

Name : lblBID
Caption : BRANCH ID
Name : lblBcode
Caption :BRANCH CODE
Name : lblLocation
Caption : LOCATION
Name : lblTotEmp
Caption : TOTAL EMPLOYEE

Text-boxes

Name: txtBID
Text : 'leave blank'
Name : txtBcode
Text : 'leave blank'
Name : txtLocation
Text : 'leave blank'
Name : txtTotEmp
Text : 'leave blank'

Buttons

Name : cmdAdd
Caption : &ADD
Name : cmdDel
Caption : &DELETE
Name : cmdUpdate
Caption: &UPDATE
Name : cmdDisplay
Caption : &DISPLAY
Name : cmdClr
Caption : &CLEAR
Name : cmdExit
Caption : &EXIT

DataGrids

Name : DataGrid1

Code for frmBranch

Private Sub cmdAdd_Click()
    Dim total As Double
    rs.Open "SELECT Count(EID) FROM Employee",
    con, adOpenDynamic, adLockPessimistic
    total = rs.Fields(0).Value
    con.Execute "INSERT INTO
    Branch(BID, Bcode, Location , TotalEmployees )
    VALUES (" & txtBID & ",'" & txtBcode &
    "','" & txtLocation & "', " & total & ")"
    MsgBox ("Record Added")
End Sub
Private Sub cmdClr_Click()
    txtBID = " "
    txtBcode = " "
    txtLocation = " "
    txtTotEmp = " "
End Sub
Private Sub cmdDel_Click()
    con.Execute "DELETE * FROM Branch
    WHERE BID = " & txtBID & ""
    MsgBox ("Record Deleted")
End Sub
Private Sub cmdDisplay_Click()
    rs.CursorLocation = adUseClient
    rs.Open "SELECT * FROM Branch",
    con, adOpenDynamic, adLockPessimistic
    Set DataGrid1.DataSource = rs
End Sub
Private Sub cmdExit_Click()
    Unload Me
    con.Close
End Sub
Private Sub cmdUpdate_Click()
    Dim total As Double
    rs.Open "SELECT Count(EID) FROM
    Employee WHERE BID = " &
    txtBID & " ", con,
    adOpenDynamic, adLockPessimistic
    total = rs.Fields(0).Value
    con.Execute "UPDATE Branch SET Bcode
    = '" & txtBcode & "',Location
    = '" & txtLocation & " ',
    TotalEmployees = " & total & "
    WHERE BID = " & txtBID & " "
    MsgBox ("Record Updated ")
End Sub
Private Sub Form_Load()
    Call loadcon
End Sub

Components of frmCustomer

Form Customer Details – Bank Management System

Labels

Name :lblAno
Caption : ACCOUNT NO
Name :lblAno
Caption : ACCOUNT NO
Name :lblAname
Caption : ACCOUNT NAME
Name : lblAddress
Caption : BALANCE
Name : lblBrankID
Caption : BRANCH ID

Text-Boxes

Name : txtAno
Text : 'leave blank'
Name : txtAname
Text ; 'leave blank'
Name : txtAddress
Text : 'leave blank'
Name : txtBalance
Text : 'leave blank'
Name : txtBID
Text : 'leave blank'
Name : cmdAdd
Caption : &ADD
Name : cmdDel
Caption : &DELETE
Name : cmdClr
Caption : &CLEAR
Name : cmdExit
Caption : &EXIT
Name : cmdUPDATE
Caption : &UPDATE
Name : cmdDisplay
Caption : &DISPLAY

Code for frmCustomer

Private Sub cmdAdd_Click()
    con.Execute "INSERT INTO Customer ( 
    AccountNo, AccountName, Address, Balance, BID )
    VALUES(" & txtAno & ",' " & txtAname &
    " ',' " & txtAddress & " '," &
    txtBalance & ", " & txtBID & ")"
    txtAno = "" txtAname = "" txtAddress = ""
    txtBalance = "" txtBID = ""
    MsgBox ("Record Added")
End Sub
Private Sub cmdClr_Click()
    txtAno = ""
    txtAname = ""
    txtAddress = ""
    txtBalance = ""
    txtBID = ""
End Sub
Private Sub cmdDel_Click()
    con.Execute "DELETE * FROM Customer
    WHERE AccountNo = " & txtAno & ""
    MsgBox ("Record Deleted")
End Sub
Private Sub cmdDisplay_Click()
    rs.Open "SELECT * FROM Customer",
    con, adOpenDynamic, adLockPessimistic
    Set DataGrid1.DataSource = rs
End Sub
Private Sub cmdExit_Click()
    Unload Me
    con.Close
End Sub
Private Sub cmdUpdate_Click()
    con.Execute "UPDATE Customer
    SET AccountName = '" & txtAname & " ',
    Address = ' " & txtAddress & " ',
    Balance = " & txtBalance & "
    WHERE AccountNo = " & txtAno & "" txtAno = ""
    MsgBox ("Record Updated!")
End Sub
Private Sub Form_Load()
    Call loadcon
    MsgBox ("connected")
End Sub

Components of frmEmployees

Form Employee Details – Bank Management System

Labels

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Name : lblEID
Caption : EID
Name : lblEname
Caption : EMPLOYEE NAME
Name : lblEname
Caption : EMPLOYEE NAME
Name : lblDesig
Caption : DESIGNATION
Name : lblSalary
Caption : SALARY
Name : lblWeekoff
Caption :WEEKOFF
Name : lblBranchID
Caption : BRANCH ID

Text-boxes

Name : txtEID
Text : 'leave blank'
Name : txtEname
Text : 'leave blank'
Name : txtDesig
Text ; 'leave blank'
Name ; txtSalary
Text : 'leave blank'
Name : txtWeekoff
Text : 'leave blank'
Name : txtBID
Text : 'leave blank'

Buttons

Name : cmdAdd
Caption : &ADD
Name : cmdDel
Caption : &DELETE
Name : cmdUpdate
Caption : &UPDATE
Name : cmdDisplay
Caption : &DISPLAY
Name : cmdClr
Caption : &CLEAR
Name : cmdExit
Caption : &EXIT

DataGrid

Name : DataGrid 1

Code for frmEmployee

Private Sub cmdAdd_Click()
    con.Execute "INSERT INTO
    Employee (EID, Ename, Designation, Salary, Weekoff, BID)
    VALUES (" & txtEID & ",'" &
    txtEname & "','" &
    txtDesig & "', " &
    txtSalary & ", '" &
    txtWeekoff & "', " &
    txtBID & ")"
    MsgBox ("Record Added")
    txtEID = "" txtEname = "" txtDesig
    = "" txtSalary = "" txtWeekoff = "" txtBID = ""
End Sub
Private Sub cmdClr_Click()
    txtEID = ""
    txtEname = ""
    txtDesig = ""
    txtSalary = ""
    txtWeekoff = ""
    txtBID = ""
End Sub
Private Sub cmdDel_Click()
    con.Execute "DELETE * FROM
    Employee WHERE EID = " &
    txtEID & ""
    MsgBox ("Record Deleted ")
    txtEID = ""
End Sub
Private Sub cmdDisplay_Click()
    rs.Open "SELECT * FROM Employee",
    con, adOpenDynamic, adLockPessimistic
    Set DataGrid1.DataSource = rs
 
End Sub
Private Sub cmdExit_Click()
    Unload Me
    con.Close
End Sub
Private Sub cmdUpdate_Click()
    con.Execute "UPDATE Employee
    SET Ename = '" &
    txtEname & "',Designation = '" &
    txtDesig & "',Salary = " &
    txtSalary & ",Weekoff = ' " &
    txtWeekoff & " ', BID = " &
    txtBID & " WHERE EID = " &
    txtBID & " "
    
    MsgBox ("Record Updated")
End Sub
Private Sub Form_Load()
    loadcon
End Sub

Components of frmTransaction

Form Transaction – Bank Management System

Labels

Name : lblTID
Caption : TRANSACTION ID
Name : lblBID
Caption : BRANCH ID
Name :lblAno
Caption : ACCOUNT NO
Name : lblWDraw
Caption : WITHDRAW
Name : lblDEPOSIT
Caption : lblDeposit
Name : lblDate
Caption : DATE

Text-boxes

Name : txtTID
Text : 'leave blank'
Name : txtBID
Text : 'leave blank'
Name : txtAno
Text : 'leave blank'
Name : txtWDraw
Text : 'leave blank'
Name : txtDeposit
Text : 'leave blank'
Name : txtDate
Text : 'leave blank'

Buttons

Name : cmdAdd
Caption : &ADD
Name : cmdDel
Caption : &DELETE
Name : cmdUpdate
Caption : &UPDATE
Name : cmdDisplay
Caption : &DISPLAY
Name : cmdClr 
Caption : &CLEAR
Name : cmdExit
Caption : &EXIT

Data Grids

Name : Data Grid 1

Code for frmTransaction

Private Sub cmdAdd_Click()
    con.Execute "INSERT INTO
   Trans(TID, BID, AccountNo, Withdraw, Deposit, TransactionDate )
    VALUES (" & txtTID & "," &
    txtBID & ", " &
    txtAno & "," &
    txtWDraw & ", " &
    txtDeposit & ", ' " &
    txtDate & "' )"
    txtTID = "" txtBID = "" txtAno
    = "" txtWDraw = "" txtDeposit
    = "" txtDate = ""
    MsgBox ("Record Added")
End Sub
Private Sub cmdClr_Click()
    txtTID = ""
    txtBID = ""
    txtAno = ""
    txtWDraw = ""
    txtDeposit = ""
    txtDate = ""
End Sub
Private Sub cmdDel_Click()
    con.Execute "DELETE * FROM
    Trans WHERE TID = " &
    txtTID & ""
    MsgBox ("Record Deleted")
End Sub
Private Sub cmdDisplay_Click()
    rs.Open "SELECT * FROM Trans ", con,
    adOpenDynamic, adLockPessimistic
    Set DataGrid1.DataSource = rs
End Sub
Private Sub cmdExit_Click()
    Unload Me
    con.Close
End Sub
Private Sub cmdUpdate_Click()
    con.Execute "UPDATE Trans SET
    BID = " & txtBID & " ,
    AccountNo = " & txtAno & " ,
    Withdraw = " & txtWDraw & ",
    Deposit = " & txtDeposit & "
    WHERE TID = " & txtTID & ""
    txtTID = "" txtBID = "" txtAno
    = "" txtWDraw = "" txtDeposit = "" txtDate = ""
    MsgBox ("Record Updated")
End Sub
Private Sub Form_Load()
    Call loadcon
    MsgBox ("connected")
End Sub

frmMENU [ MDI Form ]

The MDI form is that form which has MENU and when you click on any one of the menu item, it opens up another MDI Child form.

We will set MDI Child property for following forms

  • frmBranch
  • frmCustomer
  • frmEmployee
  • frmTransaction 

Go to the property of each form and set the MDI Child to ‘True’.

Set MDI Child to True

Under Project 1 , [Right Click] the Forms > [Click] Add > [Click] MDI Form.

Create MDI Form

Configure Menu using the Menu Editor in MDI Form and write appropriate code for the form.

Form Menu – Bank Management System

Code for frmMENU

Private Sub branch_Click(Index As Integer) 
  frmBranch.Show 
End Sub

Private Sub customer_Click(Index As Integer) 
  frmCustomer.Show 
End Sub

Private Sub employee_Click(Index As Integer) 
  frmEmployee.Show 
End Sub

Private Sub exit_Click(Index As Integer) 
  Unload Me 
  Unload frmBankManagement 
  Unload frmLogin 
  Unload frmCustomer 
  Unload frmEmployee 
End Sub 

Private Sub transaction_Click(Index As Integer) 
  frmTransaction.Show 
End Sub

Code for Module1.Bas

Most of the forms in the application need to connect to the database, so you may have to write code for connectivity with Microsoft Access Database repeatedly in each form.

Instead of writing the code for connectivity in each form, we write it once in a Module and call the function from the form. In this way, we save time to write the same code many times.

Here is the code for Module1.bas

Note; To know more about creating a new Module go to one of the previous Visual Basic 6 posts.

Public con As ADODB.Connection
  Public rs As ADODB.Recordset
  Public constr As String
  Public Sub loadcon() constr = "Provider=Microsoft.Jet.OLEDB.4.0;
  Data Source=C:UsersGirishDocumentsStudentDB.mdb;Persist Security Info=False"
  con.Open constr
End Sub
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