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If you only have a few users to share your Access database with, you can use a single database that each person opens and uses on a home network. Use the following guidelines to help you make the best choice for your needs. What will the network environment be like?Ĭhoosing the correct Access database solution for your network environment is a critical step to making it successful. If multiple users will simultaneously use your application over a network, you should separate the data and the logic, either by using two or more Access files, or by using a database server product for data and Access for application logic. Moreover, if you combine the data and the logic in one Access file, you cannot optimize the network traffic that Access generates. Network capacity If multiple users will need to use the application at the same time over a network, data corruption is more likely to occur if the data and logic are combined in one file. To learn more about Access specifications, see the article Access specifications. You should also review the Access program specifications for other scalability information. If you expect that users will store a large volume of data, you might consider using more than one Access data file. If you separate the data and the logic, your application can accommodate more data. Although 2GB is a substantial amount of text data, it may be insufficient for some applications, particularly applications that store attachments in database records. Scalability An Access file can have a maximum size of 2 gigabytes (GB). In this case, you could use SQL Server or SharePoint to store and manage your application data, and use Access to provide the application logic.

Your application may require further security options, such as the ability to control which users have access to particular data. For example, you may want to assign read-only permissions to some users and read/write permissions to other users. However, you can assign different permissions to the front-end file itself. An Access application that uses separate logic and data files can help protect data integrity and security by leveraging NTFS security features on network folders.Īccess users must have read, write, create, and delete permissions to the folder where the front-end file is located.

For more information, see Migrate an Access database to SQL Server.Īdditional reasons for separating data and logic include the following:ĭata integrity and security If you combine data and logic in one file, the data is exposed to the same risks as the application logic. For more information, see Split an Access database.Īnother way to separate data management and application logic is by using a database server program (such as Microsoft SQL Server) for data management, and Access for application logic. You can even distribute different front-end files to different users. You distribute the front-end file, one copy for each user, to their computers. You put the back-end database in a shared location, such as a network folder. For example, a database called MySolution.accdb is split into two files called MySolution_fe.accdb and MySolution_be.accdb. This command splits your database application into two Access files: one for logic (a front-end) and one for data (a back-end). One way to separate data and logic is by using the Access Database command (on the Database Tools tab, in the Move Data group). This helps improve performance and reliability. In most cases, you should separate data management and application logic. For example, a user could cause data loss by unintentionally deleting or damaging the application file. Combining data management and application logic in one file provides the simplest deployment method, but this method works best only if a few people use the application at the same time, and it involves some risk. This is the default application structure in Access. You can create an Access application that combines data management and application logic in one file.

Should the data and the logic be separated? Understand and download the Access RuntimeĪCE no longer requires a separate installation to interact with non-Office appsīefore you begin, you should ask yourself the following questions about the way that the application will be deployed. This article discusses basic deployment planning, packaging and signing, deploying database applications, and the Access Runtime environment.

A database application is a computer program that provides both a way to store and manage data and a user interface that follows the logic of business tasks (application logic). Access provides a feature-rich platform for developing database applications.

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