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ok Timestamp  Access Error Message: Write conflict:  This record has been modified by another user since editing began
 
 
Error message

Write conflict:
This record has been modified by another user since editingbegan. When you save the record, you will overwrite the other user's changes.
copying your change to the clipboard allowed you to view the other user's changes and then paste your changes if you wish

->Copy to clipboard
->Discard my own changes

 

 
 
Solution
You have to / should insert a column of type timestamp in SQL Server
This makes it easier for the server or client to detect a changed record.
 
Improving Access:
With a column timestamp only the ID as primary key plus the value in Timestamp must be checked to see if a record is currently being edited.
This can be especially improved when deleting or modifying large amounts of data with query queries.
 
 
SQL Server: Timestamp Field
Under Data Type, SQL Server specifically has a data type field of type: timestamp. This has the size of binary 8 bytes

 
Input
Under Microsoft MS Access,you can see included timestamp  fields as <binary data>

 
Embed SQL servers in MS Access
Access via ODBC

Then in external data ODBC database
->Create a link to the data source by creating a linked table

 
Then you only have to create a new data source under Computer Data Source with the button: Rebuild and assign the type of the new data source  as  SQL Server

 
The new data source for SQL Server is the local SQL Server . sqlexpress  or an external SQL server with a predetermined SQL  Connectionstring.  

 
In the source you select the default database from master  to the database (here test) which you want to use

 
Then all tables, view queries and internal tables are displayed for integration into MS Access.

 
Following in MS Access in the linked tables from SQL Server,you can seethat the mounted  timestamp  tables of type: binary are traded in MSAccess.  

 
Change in MS Access simultaneously by 2 users or two concurrent applications
 
Normally, the message comes:
Microsoft Access
The data has been changed.
Another user edited this record and saved the changes they made before you tried to save your changes.
Rework the record

 
Or the error message
Write conflict:
This record has been modified by another user since editingbegan. When you save the record, you will overwrite the other user's changes.
copying your change to the clipboard allowed you to view the other user's changes and then paste your changes if you wish
 
->Copy to clipboard
->Discard my own changes

 
For example, this table does not yet have a timestamp  field

 
 

http://support.microsoft.com/kb/128808

Timestamps

On servers that support them (such as Microsoft SQL Server), timestamp fields make updating records more efficient. Timestamp fields are maintained by the server and are updated every time the record is updated. If you have a timestamp field, Microsoft Access needs to check only the unique index and the timestamp field to see if the record has changed since it was last retrieved from the server. Otherwise, Microsoft Access must check all the fields in the record. If you add a timestamp field to an attached table, re-attach the table in order to inform Microsoft Access of the new field.

and

http://www.sql-server-performance.com/2007/access-sql/

One way to increase performance of DELETEs or UPDATEs made by your Access front-end to a SQL Server backend is to ensure that the table on SQL Server has a timestamp column. If a table does have a timestamp column, then when Access DELETEs or UPDATEs a row, Access will automatically check the timestamp column to see if it has changed during the time that the transaction began and the current time that the deletion or update is made. If the timestamp column has changed, then the DELETE or UPDATE will be aborted. If a timestamp column does not exist in the table, then Access will have to compare all the field values when the transaction begins to determine their current value if there were any changes. This is much slower for access to perform than checking the timestamp column.
 
 
 
Create SQL Transact
SQL Statement to SQL Server Tables with  TimeStamp  Column


USE [Test]
Go
 
/****** Object: Table [dbo]. [tblTimeStamp] script Date: 01/07/2020 16:01:11 ******/
SET ANSI_NULLS ON
Go
 
SET QUOTED_IDENTIFIER ON
Go
 
CREATE TABLE [dbo]. [tblTimeStamp](
[ID] [int] IDENTITY(1,1) NOTNULL,
[Enter] [nvarchar] (50) ZERO,
[tmp] [timestamp] NULL,
CONSTRAINT [PK_tblAccess] PRIMARY KEY CLUSTERED
(
[ID] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON" ON [PRIMARY]
) ON [PRIMARY]
Go

 
 
 
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