Combining Access Tables - mysql

Question

I have a central database that is kept on a network that stores part numbers & descriptions for various components for machines. Often times individuals will need to use an offline copy during design and will add new entries to it. Is there a script to find the differences and update the master file that is on the network? I played around with union queries but I'm struggling to be able to update the original file and original table. My sql/microsoft access knowledge is limited.
For sake of clarity let's call the files as such:
Network Database: Network_DB.mdb
Offline Database: Offline_DB.mdb
Table: MISC_CAT

Answer 1

In my experience a generic solution is pretty difficult. I tend to store the field names I want in a table then run the relevant update:
Public Function UpdateData()
Dim db As Database
Dim qd As QueryDef
Dim rs As Recordset
Dim strSQL As String
On Error GoTo Err_UpdateData
Set db = CodeDb
strSQL = "SELECT fldName FROM MyTables WHERE tblName = 'MISC_CAT'"
Set rs = db.OpenRecordset(strSQL, dbOpenSnapshot)
Do Until rs.EOF
strSQL = "UPDATE MISC_CAT_Network INNER JOIN MISC_CAT_Offline ON MISC_CAT_Network.KeyID = MISC_CAT_Offline.KeyID " & _
"SET MISC_CAT_Network.[" & rs!fldName & "] = [MISC_CAT_Offline].[" & rs!fldName & "] " & _
"WHERE (((Nz([MISC_CAT_Network].[" & rs!fldName & "],''))<>Nz([MISC_CAT_Offline].[" & rs!fldName & "],'')))"
db.Execute strSQL, dbFailOnError
rs.MoveNext
Loop
db.Execute strSQL, dbFailOnError
rs.Close
db.Close
Exit_UpdateData:
Set rs = Nothing
Set qd = Nothing
Set db = Nothing
Exit Function
Err_UpdateData:
Debug.Print "Error - " & Err.Number & " - " & Err.Description
Resume Exit_UpdateData
End Function