After researching for around two hours, I found eSoftTools EDB to PST Converter Tool. This utility application enabled me to restore defiled data of the Exchange database. The user has the option to choose one or many mailbox items for conversion in one shot. A preview is displayed on the screen so that the user can view the components prior to conversion. The tree structure remains unchanged throughout the process. The interface of the software is designed in such a manner that even a non-technical user can operate this tool without any external help. Every single element of the mailbox can be restored without missing any intact data. This includes emails, notes, calendars, contacts, journals, and others. It can even act like a PST splitter for the resultant file. Since a free edition is also offered to all users, therefore it is worth a try for all Exchange administrators and users.