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If you create an application that will run on several machines in a network environment or if several instances of a form will access the same data, then you must program for shared access. Shared access means providing efficient ways of using and sharing data among users, as well as restricting access when necessary.
Microsoft Visual FoxPro provides support for shared or exclusive access to data, locking options, data sessions, record and table buffering, and transactions. Although these features are useful particularly in shared environments, you can use them in single-user environments too.
In This Section
- Controlling Access to Data
- Discusses effective data management in a shared environment, and how you must choose how to access the data and when and where to limit that access.
- Updating Data
- Explains how to update data using buffers, transactions, or views.
- Managing Conflicts When Updating Data
- Discusses how you can anticipate and manage the inevitable conflicts that result from data update operations.
- How to: Detect Updating Conflicts
- Describes how you can detect changes in fields during data update operations.
- Optimizing Applications in Multiuser Environments
- Discusses how to improve performance when writing applications for multiuser environments.