Elendos_files_database.rar

It may be a compressed dump of information used for transferring data between specialized software applications. Recommended Safety Measures

Extract the file to a secure, isolated folder to inspect the files before integrating them into a system. Elendos_Files_Database.rar

It is likely a proprietary or personal backup of a database ("Files_Database") curated by an individual or team named "Elendos". It may be a compressed dump of information