Prerequisites for the Data Access Layer (DAL) Business Logic Tier (BLT) client
- Last UpdatedApr 08, 2026
- 1 minute read
The Developer scenarios are created with the assumption that an example of the Data Access Layer (DAL) Business Logic Tier (BLT) component will be created and hosted by the RealTime service, but BLT components may be implemented for other services, such as Common, Historical, or Inter-System Publish/Subscribe (ISPS).
To test the code examples in these scenarios, you must stop the RealTime service, compile, and then re-start the RealTime service.
The DALBLTTest application is used to check the execution results of the proposed BLT components.
Before using the Data Acess Layer (DAL) Business Logic Tier (BLT) client, ensure the following is true:
- Visual Studio is installed.
- The workspace is configured for building DNA applications.
- You have access to the following files:
- %DNAInstallRoot%\RealTime\bin\OASySDNA.Common.DAL.DALBLTClient.dll
- %DNAInstallRoot%\RealTime\bin\OASySDNA.Common.DAL.DALCommon.dll
- %DNAInstallRoot%\RealTime\bin\OASySDNA.Common.DAL.BLTCommon.dll
- %DNAInstallRoot%\RealTime\bin\OASySDNA.Common.DAL.ClientSDK.dll