Q: How is load test execution affected by data source access methods?
When you add data source to a Web test, you can choose from three different access options. • Sequential – If you set a data source to sequential, it uses the records from the data source in the order it reads them in. When it reaches to end of the records, it will loop back to the beginning and start again. It will continue to do this for the duration of the load test. • Random – If you select random, then a random row will be used for each test iteration. This will continue to happen for the duration of the load test. • Unique – If you select unique, the load test will access the data sequentially, but it will only execute 1 test iteration for each row in the data source regardless of what the test duration is set to. So if you have 20 rows, then the load test will execute 20 tests and then stop. For more information, see About Data Binding in Web Tests.
