question: private boolean isMinorVersionUpgrade ( String currentVersion , String targetVersion ) { String currentDbSchemaVersion = VdcUtil . getDbSchemaVersion ( currentVersion ) ; if ( currentDbSchemaVersion == null ) { return false ; } return currentDbSchemaVersion . equals ( VdcUtil . getDbSchemaVersion ( targetVersion ) ) ; }
target:  Check if the current upgrade is a SP/patch/hotfix upgrade.