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Assembly versioning allows the application to specify not only the library it needs to run (which was available under Win32), but also the version of the assembly.
Multiple processes must agree that they will share the same connection, where every parameter is the same, including the security settings. The connection string must be identical.
Windows Authentication is trusted because the username and password are checked with the Active Directory, the SQL Server authentication is untrusted, since SQL Server is the only verifier participating in the transaction.
Windows Authentication (via Active Directory) and SQL Server authentication (via Microsoft SQL Server username and password).
SQLServer.Net data provider is high-speed and robust, but requires SQL Server license purchased from Microsoft. OLE-DB.Net is universal for accessing other sources, like Oracle, DB2, Microsoft Access and Informix. OLE-DB.Net is a .Net layer on top of the OLE layer, so it’s not as fastest and efficient as SqlServer.Net.
It returns a read-only, forward-only rowset from the datasource. A DataReader provides fast access when a forward-only sequential read is needed.
1. Positive test cases (correct data, correct output).
2. Negative test cases (broken or missing data, proper handling).
3. Exception test cases (exceptions are thrown and caught properly).
Attach the aspnet_wp.exe process to the DbgClr debugger.
The tracing dumps can be quite verbose. For applications that are constantly running you run the risk of overloading the machine and the hard drive. Five levels range from None to Verbose, allowing you to fine-tune the tracing activities.
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