Sometimes, when making the installation database-related installer, determine if the MDAC component is installed when the program is installed according to the MDAC version of your own software. Or determine the version number at runtime, there are a variety of ways to achieve the purpose.
1. Check the DLL file version via the program.
2. Determine the version by checking the relevant entry of the registry.
HKEY_LOCAL_MACHINE / SOFTWARE / Microsoft / DataAccess
View two key values FullinstallVer and Version
