可以使用VBA代码实现Access数据库和Excel之间的双向连接。以下是一个实现双向连接的示例代码：

在Excel中连接Access数据库：

Sub connectToAccess()
    Dim dbPath As String, query As String, conn As Object, rs As Object
    Dim i As Integer, fldCount As Integer, rowCount As Integer
   
    dbPath = "C:\example.accdb" 'Access数据库的路径
    Set conn = CreateObject("ADODB.Connection")
   
    '连接Access数据库
    conn.Open "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" & dbPath & ";Persist Security Info=False;"
   
    '查询数据表的SQL语句
    query = "SELECT * FROM ExampleTable"
   
    '执行查询并将结果填充到Excel表格中
    Set rs = conn.Execute(query)
    rowCount = 1
    fldCount = rs.Fields.Count
    With ActiveSheet
        .Cells.ClearContents
        .Cells.ClearFormats
        For i = 0 To fldCount - 1
            .Cells(rowCount, i + 1).Value = rs.Fields(i).Name
        Next
        rowCount = rowCount + 1
        Do Until rs.EOF
            For i = 0 To fldCount - 1
                .Cells(rowCount, i + 1).Value = rs.Fields(i).Value
            Next
            rowCount = rowCount + 1
            rs.MoveNext
        Loop
        .Cells.EntireColumn.AutoFit
    End With
   
    rs.Close
    conn.Close
    Set rs = Nothing
    Set conn = Nothing
End Sub

在Access数据库中连接Excel：

Sub connectToExcel()
    Dim xlPath As String, conn As Object, rs As Object
    Dim i As Integer, fldCount As Integer, rowCount As Integer
   
    xlPath = "C:\example.xlsx" 'Excel文件的路径
    Set conn = CreateObject("ADODB.Connection")
   
    '连接Excel文件
    conn.Open "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" & xlPath & ";Extended Properties='Excel 12.0 Xml;HDR=YES;IMEX=1';"
   
    '查询Excel数据表的SQL语句
    query = "SELECT * FROM [Sheet1$]"
   
    '执行查询并将结果填充到Access数据库表格中
    Set rs = conn.Execute(query)
    rowCount = 1
    fldCount = rs.Fields.Count
    Do Until rs.EOF
        With CurrentDb.OpenRecordset("ExampleTable", dbOpenDynaset)
            .AddNew