TinyCDB is a very fast and simple package for creating and reading constant
data bases, a data structure introduced by Dan J. Bernstein in his cdb
package. It may be used to speed up searches in a sequence of (key,value)
pairs with very big number of records. Example usage is indexing a  big list
of users - where a search will require linear reading of a large /etc/passwd
file, and for many other tasks. It's usage/API is similar to ones found in
BerkeleyDB, gdbm and traditional *nix dbm/ndbm libraries, and is compatible
in great extent to cdb-0.75 package by Dan Bernstein.

CDB is a constant database, that is, it cannot be updated at a runtime, only
rebuilt. Rebuilding is atomic operation and is very fast - much faster than of
many other similar packages. Once created, CDB may be queried, and a query
takes very little time to complete.

The SlackBuild will install both the binary cdb as well the system library for
use in other applications such as Postfix.
