One of the changes from 6.52 to 7.x is that you now can share your database on a local computer. When you share a database, DataEase need to use locking, and that slows things down.

The solution is simple. If you dont need to share your database on your hard drive, and who really need that, open DataEase 7.2, Close the Welcome Screen if it is active, and select Options in the File menu in the upper left corner. When the options dialog opens, select the Database Engine tab, and uncheck the Share Local Database checkbox.

Without locking on a native drive you will experience a great increase in performance, especially in heavy data intensive operations like DQLs for updating and deleting data.