QDBM is a library of routines for managing a database. The database is a simple data file containing records, each is a pair of a key and a value. Every key and value is serial bytes with variable length. Both binary data and character string can be used as a key and a value. There is neither concept of data tables nor data types. Each key must be unique within a database, so it is impossible to store two or more records with a key overlaps.
The following access methods are provided to the database: storing a record with a key and a value, deleting a record by a key, retrieving a record by a key. Moreover, traversal access to every key are provided, although the order is arbitrary. These access methods are similar to ones of DBM (or its compatibles, NDBM and GDBM) library defined in the UNIX standard. QDBM is an alternative for DBM because of its higher performance.
QDBM provides API for C++. This encapsulates the basic API and the extended API of QDBM, and make them thread-safe. Each class is packaged in the namespace `qdbm'.
Refer to `http://qdbm.sourceforge.net/' for more information.