Is there any way through which i can export all the entries/transactions(the whole database),not specifically reports? and the formats in which we can do?
If you have a client/server variant, you have all data available in SQL tables, but I guess that you need to export raw accounting data. Depending on your task you can write a data processor for export. You can use Metadata object to get list of all objects, select all objects using query and export them as XML serializations, for example. Please see 1C:Enterprise 8. Developer guide and 1C:Integration forum for more information.