If the value of 0 is provided, gdbm will use a default function. The return value dbf is the pointer needed by all other routines to access that gdbm file. It is important that every file opened is also closed. The first stores data in the database. Key is the key data.
Content is the data to be associated with the key .
Otherwise, the return value is 0. The size in gdbm is not restricted like dbm or ndbm. Your data can be as large as you want. Key is the key data. If the dptr element of the return value is NULL, no data was found.