I want to access gzippped Berkley DB file using Zlib module, but gzread()/gzwrite() can only return/take a buffer of data, how can I tie that buffer with hash (without creating of temporary files)? Is there any other modules like DB_File that could tie hash with variable or filehandle instead of file? Is this all about "In Memory Databases" ? Theres just a few words about that in DB_File manual, and it isn't clear how to access the memory with DB..