In TestComplete tests, you can connect to databases, read data from them, and write data there. You can also create data-driven loops that will extract values from a database to DBTable variables and move to the following database record.
TestComplete uses database drivers that have the same bitness. If you use the Microsoft Open Database Connectivity Data Source Administrator tool to connect to a database, make sure the version you use has the same bitness as TestComplete. On a 64-bit operating system, you can find the 32-bit version of the tool (Odbcad32.exe) in the <Windows>\SysWOW64 folder.
Working with databases in tests
Using the approaches described above, you can retrieve data from the needed database (or file), store records to variables and then use these variables in your tests. For more information that illustrates working with databases via TestComplete, we recommend that you get acquainted with the following tutorials: