Update sql server database from access database


















You can extract the files from the Access database and then consider storing links to the files in your SQL Server database. By default, these columns will be converted to nvarchar max columns in SQL Server, but you can customize the mapping to choose a smaller data type.

In your Access solution, you can still use the hyperlink behavior in forms and reports if you set the Hyperlink property for the control to true. Multivalued field The Access multivalued field is converted to SQL Server as an ntext field that contains the delimited set of values. Because SQL Server does not support a multivalued data type that models a many-to-many relationship, additional design and conversion work might be needed. Note Multivalued fields are not converted and were discontinued in Access For more information, see Date and time types , String and binary types , and Numeric types.

In most cases, these queries should be converted to pass-through queries. SQL Server cannot run these user defined functions. You may need to manually redesign these functions and convert them to stored procedures on SQL Server. By far, the most important way to optimize performance with your new, back-end SQL Server is to decide when to use local or remote queries.

When you migrate your data to SQL Server, you are also moving from a file server to a client-server database model of computing. Follow these general guidelines:. For more information, see Create a pass-through query.

Put logic on the server Your application can also use views, user-defined functions, stored procedures, calculated fields, and triggers to centralize and share application logic, business rules and policies, complex queries, data validation, and referential integrity code on the server, rather than on the client. Ask yourself, can this query or task be performed on the server better and faster? Finally, test each query to ensure optimal performance.

Use views in forms and reports In Access, do the following:. For reports, use an SQL view as the record source. However, create a separate view for each report, so that you can more easily update a specific report, without impacting other reports.

For example, keep the recordsource property blank, make users select a filter on your form, and then populate the recordsource property with your filter. Or, use the where clause of DoCmd. OpenForm and DoCmd. OpenReport to display the exact record s needed by the user.

Consider turning off record navigation. Be careful with heterogeneous queries Avoid running a query that combines a local Access table and SQL Server linked table, sometimes called a hybrid query. When to use local tables Consider using local tables for data that rarely changes, such as the list of states or provinces in a country or region. Static tables are often used for filtering and can perform better on the Access front-end. Azure Database Migration Guide.

Microsoft Data Migration Blog. Ways to share an Access desktop database. SQL Server migration. Need more help? Expand your skills. Encrypt Specifies whether data should be encrypted before sending it over the network Yes or No. Name of the failover partner server to be used if a connection cannot be made to the primary server. Digit character string specifying the threshold in milliseconds for logging long-running queries. Name of an ODBC data source file into which the attributes of the current connection are saved if the connection is successful.

The network library used to establish a connection to an instance of SQL Server in the organization. Administer ODBC data sources. Manage linked tables. SQL Server migration. Need more help? Expand your skills. Get new features first. Was this information helpful? Yes No. Thank you! Any more feedback?

The more you tell us the more we can help. Can you help us improve? Resolved my issue. Clear instructions. Easy to follow. No jargon. Pictures helped. CData Sync Replicate any data source to any database or warehouse. Relational Databases. Ready to get started? Select the option to link to the data source.

A linked table will enable you to read from and write data to the Orders table. Select the Orders table. For more information on this table, see the "Data Model" chapter in the help documentation. Collectives on Stack Overflow. Learn more. Asked 3 years, 11 months ago. Active 3 years, 11 months ago. Viewed 3k times. If you have any suggestion and a link to easy to follow tutorial I would really appreciate it!

Improve this question. Rename your local Access tables. They will appear as actual tables in your Access database. Then when you monkey with those tables in Access you are actually monkeying with the SQL Server table.



0コメント

  • 1000 / 1000