Looks like MS Access 2003 security has a lot of workarounds and issues. For example, I have two databases (a front-end and a back-end linked to the front-end). I wanted to secure both of them. For example setting password (this is database password and
not .mdw) to back-end (BE) blocks the starting up of front-end (FE) database. Joining .mdw in both the databases (FE and BE) also doesn’t work which means it causes other databases to also prompt for credentials. So a combination of setting password to front-end
and joining back-end to secure .mdw has worked. Now the databases are secure and can be opened by credentials (.mdw creds for back-end and .mdw creds + database password for front-end). Does someone have an idea why this happens?
1 Answer Found
Setting a database password in't a best practice for securing a database. Although you could protect the backend database using a password, this password will be stored in the frontend database and can be read by sophisticated users. If the backend tables
are already linked in the frontend when specifying a password for the backend database, one must delete all linked tables from the frontend and re-link them (specifying the password).
User-level security is a complex topic and I will not explain all of it in detail, here you will find more about it:
Simply "joining" a workgroup using the Access menu commands does not have an effect on the database opened at all. Specifying a workgroup here means telling Access to open that other mdw file (instead of the default system.mdw from your user profile) when
starting Access in the future. Configuring security in the database right now will be quite useless and will not secure your database. To see that I am right, start Access and join the default workgroup again and re-open the backend database. This should not
be possible if your database was secure.
The reason why "other databases prompt for credentials" is that you set a password for the Admin user in the workgroup file that Access uses when starting (your new workgroup). When the Admin user in the workgroup used has a password, the user is prompted
(and if not, the user is automatically logged on as user Admin). To solve this issue, re-join the default workgroup. This should always be done after creating a new workgroup file. To tell Access to use your new workgroup when opening your database, use a
shortcut to Access that contains command line parameters: "DatabasePathAndFile" /wrkgrp "WorkgroupPathAndFile"
Users and groups are stored in the mdw file, permissions are stored in the database.
Here are the essential steps for securing an unsecured database.
Create and join a new workgroup file using the Workgroup Administrator. Close and restart Access. Create users and groups in the new workgroup, configure group membership. Don't forget to add a user account for you that belongs to the Adminis group. Afterwards, remove the Admin user from the Admins group.
Define a password for the Admin user (you are logged on as Admin) Close and restart Acces. Create a new blank database and log on using your username when promted to (no password yet).
Define your password, if you wnat to (and you definitely should). If you want, specify the default permissions for new objects in your database.
Import all objects from the unsecured database to the new database (including custom menues and import/export specifications, if present).
Configure/verify permissions. The Users group and the Admin user should have no persmissions at all, don't forget to select the object "Database" in the permissions dialog.
Create a shortcut that starts Access, opens your database and uses the new workgroup file
Re-join the default system.mdw file to make Access use that one by default again.
In steps 1 and 3, don't forget to write down (or take screenshots of) the workgroup information shown and the username/groupname and PID. This information must be available if case that your workgroup file has to be re-created for whatever reason. (The PID
is only displayd while entering it. After creating the user/group, it can never be displayed again.)
Following these steps for frontend and backend databases will make them secure.
I splitted my access 2007 database into back-end/front-end files. From another computer, belonging to the same workgroup as the computer that holds the back-end file, I am currently trying to open the front-end
file and access return this error message: The Microsoft office Access database engine cannot open or write to the file
"path\file_name." It is already opened exclusivly by another user, or need permission to view and write its data.
path\file_name: is the file name that I put while spliting the database. I am sure the path is correct.
My question is to know if I there is a way to define permission as far as who can access the back-end file from the network.
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Getting ready to migrate about 30 Access 03 dbs to Access 07. Most of my DBs apps link to tables in multiple DBs. Are there any known problems of having mixed backends? Access 07 front end with both 03 and 07 links?Read more...
I read some documentation on the web today about using Excel as front end and
SQL Server as back end.
Actually, this link was pretty good:
This is pretty good too: http://bytes.com/topic/sql-server/answers/486783-updating-sql-server-Table-using-excel
This is very good; gets pretty complicated though:
I’m still pretty confused about how it all works. I found a sample of VBA
online that lets me import a couple columns from a Table:
' Declare the QueryTable object
Dim qt As QueryTable
' Set up the SQL Statement
sqlstring = "select LastName, FirstName from Employees"
' Set up the connection string, reference an ODBC connection
connstring = _
' Now implement the connection, run the Query, and add
' the results to the spreadsheet starting at row A1
That’s pretty slick, actually! However, I’m thinking I need to use Excel to
LINK to SQL Server, not COPY or IMPORT. Basically, I’m trying to find an
easy way to use Excel as a front end interface so that a user may make
changes in Excel and save all changes back to SQL Server? This should most
likely update a Query and have this Query update several Tables, I would
think. I believe this would be some type of ‘append Query’ or I would
somehow append new records. I do a lot of work in MS Access and if I was
using an Access Form, I’d connect the Form to a Query, make changes to
records in the Form, and save the changes back to the Query, which
subsequently updates the data in the underlying Tables. How can I do
something similar, but use Excel as a front end and SQL Server as a back end?
I’m using Excel 2007 and SQL Server 2008 Express.
I’d definitely appreciate any/all help with this! I guess if I could just
see some simple examples, step by step, and get something working, I could
probably figure out the rest.
As you know there are front-end tasks and back-end tasks associated with the Web. What could we consider ASP.NET, is it suited only for front-end tasks or it could reach to write any "sort of middle-layer system for a three-tier architecture"?
We are in the process of implementing terminal services on Windows 2003 Server. One of the things that will be used with terminal services is an Access 2003 database linked to a SQL Server 2005 database that runs on a different Windows 2003 Server.
The driver used is the SQL Server 2005 native client, not sure if relevant. Prior to activating Terminal Services we tested the Access 2003 FE on the Windows 2003 Server that will be used with Terminal Services. It ran very slow by a factor of 10 or more compared
to when being run on an XP box for forms with multiple list views and sub forms.
The Access 2003 FE performance is fine when used on a Windows XP box and connecting to the same SQL Server 2005 database.
Any ideas why? I did see this http://www.tek-tips.com/viewthread.cfm?qid=1086592&page=1
By the way the Windows 2003 Server is fully service packed.
Sorry bit of a SQL newbie here.
HOSTED SQL 2008 Server
Access 2000 Front end
I have a table 'Trainees' which has 65 columns. The access front end is used to update data in this table and one field 'Photo' stores an image in a VARBINARY(MAX) field.
Now everything worked perfectly until I recently added 2 more columns to the table using SQL Server Management Studio. As soon as I re-linked the table in the access front end, the images will not save to the database.
Now from what I can see happening:
Backup of Access Front end, will still post images to the 'Photo' field.
Current Access Front end (re-linked) with extra 2 fields showing - will not post to 'Photo' field. In fact, upon clicking the save button, you can see the image blank before the form closes.
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SET ANSI_NULLS ON
SET QUOTED_IDENTIFIER ON
IF NOT EXISTS (SELECT * FROM dbo.sysobjects WHERE id = OBJECT_ID(N'[dbo].[tblPermissions]') AND OBJECTPROPERTY(id,
N'IsUserTable') = 1)
CREATE TABLE [dbo].[tblPermissions](
[PermissionID] [int] NULL,
[UserType] [varchar](25) NULL,
) ON [PRIMARY]
SET ANSI_NULLS ON
SET QUOTED_IDENTIFIER ON
IF NOT EXISTS (SELECT * FROM dbo.sysobjects WHERE id = OBJECT_ID(N'[dbo].[tblusers]') AND OBJECTPROPERTY(id, N'IsUserTable')
CREATE TABLE [dbo].[tblusers](
[Userid] [int] NULL,
[UserCode] [varchar](25) NULL,
[UserName] [varchar](25) NULL,
[LoginName] [varchar](25) NULL,
[Password] [varchar](25) NULL,
[EmailID] [varchar](25) NULL,
[MobileNo] [varchar](25) NULL,
[PasswordRetrieval] [varchar](25) NULL,
[HintAnswer] [varchar](25) NULL,
[PermissinID] [int] NULL,
[PunchID] [int] NULL,
[IPAddress] [varchar](25) NULL,
) ON [PRIMARY]
SET ANSI_NULLS ON
SET QUOTED_IDENTIFIER ON
IF NOT EXISTS (SELECT * FROM dbo.sysobjects WHERE id = OBJECT_ID(N'[dbo].[tblPermissionDetails]') AND OBJECTPROPERTY(id,
N'IsUserTable') = 1)
CREATE TABLE [dbo].[tblPermissionDetails](
[PermissionID] [int] NULL,
[Permissions] [varchar] (25) NULL,
[Permitted] [varchar](25) NULL,
[PunchID] [int] NULL,
[PunchDay] [varchar](25) NULL,
[PunchTime] [datetime] NULL,
[PunchTolerance] [varchar](25) NULL,
) ON [PRIMARY]
We are upsizing our MS Access database to SQL Server 2008 and want to let users keep on using MS Access as a front end since they are familiar with the current application's reports and data entry screens. The users have been using MS Access replication
so what is the best way to let these "Occasionally Connected" users replicate their local MS Access data to SQL Server?
On the SQL Server side, merge replication is the best option. I thought one option was to use SQL Server Compact Edition on the laptops so it would be a SQL Server to SQL Server replication scenario with MS Access being a front end to SSCE but that doesn't
look feasible from other posts I've read.
How have other people solved this? It would seem that the synchronization framework would be a natural fit but it looks like this is not feasible as well.
Thanks in advance for any advice.
I have a custom message interceptor where I'm setting CorrelationManager.ActivityId which I get from the client everyting works fine for successful method call,but when exception happen new activityid is created and ignored the ActivityId
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If you have an Access 2007 database that's been split into a front-end and back-end design, what OS does Microsoft support for "hosting" the back-end database file? The system is very small with two Windows 7 PC's on a hard-wired GigE network.
According to the Windows (Microsoft Office) Live Small Business (WLSB) help content, there is a means to setup a survey that will allow you to use Sharepoint list data from the back-end of a WLSB web site to validate an entry from a front-end web site
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I have several apps developed in Access 2003 and distributed to computers running Access 2003 runtime. Macro security was an issue when I first distributed these, since there is no user interface for disabling macro security, and the user would receive
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I have always been able to bypass these with this registry entry:
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