How to Create a Microsoft Access Database using VB Prof 3.0

• Microsoft Visual Basic Professional Edition for Windows, version 3.0

SUMMARY

Below is an example showing how to use the CreateDatabase function and data definition language (DDL) statements to create an empty Microsoft Access database. This example defines the structure of the Microsoft Access database, and doesn't add any data.

MORE INFORMATION

Step-by-Step Example

1. Start a new project in Visual Basic. Form1 is created by default.



2. Double-click the form to open its code window. Add the following code to the Form Load event:

   
      Sub Form_Load ()
   
         Const DB_LANG_GENERAL = ";LANGID=0x0809;CP=1252;COUNTRY=0"
         Dim db As Database
         Dim tdEmployee As New TableDef
         Dim tdStore As New TableDef
   
         Dim fEmp_ID As New Field
         Dim fEmp_FirstName As New Field
         Dim fEmp_LastName As New Field
         Dim fEmp_Address As New Field
   
         Dim fStore_ID As New Field
         Dim fStore_Location As New Field
   
         Dim indxEmployee As New Index
         Dim indxStore As New Index
   
         Set db = CreateDatabase("COMPANY.MDB", DB_LANG_GENERAL)
   
         tdEmployee.Name = "Employee"
         tdStore.Name = "Store"
   
         'Define all Employee fields
         fEmp_ID.Name = "Emp_ID"
         fEmp_ID.Type = 4                  'Long integer
   
         fEmp_FirstName.Name = "Emp_FirstName"
         fEmp_FirstName.Type = 10          'Text (32)
         fEmp_FirstName.Size = 32
   
         fEmp_LastName.Name = "Emp_LastName"
         fEmp_LastName.Type = 10           'Text (32)
         fEmp_LastName.Size = 32
   
         fEmp_Address.Name = "Address"
         fEmp_Address.Type = 10            'Text (256)
         fEmp_Address.Size = 255
   
         'Define all Store fields
         fStore_ID.Name = "Store_ID"
         fStore_ID.Type = 4                'Long integer
   
         fStore_Location.Name = "Store_Location"
         fStore_Location.Type = 10   'Text (256)
         fStore_Location.Size = 255
   
         'Add employee fields to Fields collection
         tdEmployee.Fields.Append fEmp_ID
         tdEmployee.Fields.Append fEmp_FirstName
         tdEmployee.Fields.Append fEmp_LastName
         tdEmployee.Fields.Append fEmp_Address
   
         'Add store fields to Fields collection
         tdStore.Fields.Append fStore_ID
         tdStore.Fields.Append fStore_Location
   
         'Define employee table index
         indxEmployee.Name = "INDEX_EMPLOYEE"
         indxEmployee.Fields = "Emp_ID"
         indxEmployee.Unique = True
         indxEmployee.Primary = True
   
         'Define store table index
         indxStore.Name = "INDEX_STORE"
         indxStore.Fields = "Store_ID"
         indxStore.Unique = True
         indxStore.Primary = True
   
         'Append the employee and store indexes
         'to the respective Indexes collection
         tdEmployee.Indexes.Append indxEmployee
         tdStore.Indexes.Append indxStore
   
         'Append employee and store TableDefs
         'to TableDefs collection
         db.TableDefs.Append tdEmployee
         db.TableDefs.Append tdStore
   
      End Sub 




3. Start the program or press the F5 key. This creates a Microsoft Access database called COMPANY.MDB. End the program by closing the form.



4. You can check that COMPANY.MDB was created correctly by opening it with Microsoft Access or with the Data Manager provided with Visual Basic. You can run the Data Manager program from the Window menu in Visual Basic, or from the Windows File Manager run DATAMGR.EXE in the Visual Basic directory.

REFERENCES

The VISDATA.MAK file installed in the VB3\SAMPLES\VISDATA directory loads extensive examples of data access. The VISDATA sample program uses every data access function in Visual Basic. You can refer to the VISDATA source code for examples of how to use each data access function.

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