#define A: Introduction

PBL is a C library of functions that can be used in a C or C++ project. PBL is highly portable and compiles warning free on Linux gcc, Windows Cygwin gcc and Windows Microsoft Visual C++, V 6.0.

VERSIONS:

Version 1.00, Thu Sep 5 2002 - initial version

Version 1.01, Fri Nov 1 2002 - improved memory management, see pblkf.c Revision 1.2, 1.3

Version 1.02, Mit Feb 19 2003 - fixed a bug reported by Csaba Pálos, see pblisam.c Revision 1.2

CODE:

The code of the PBL library includes:

PBL BASE - some base functions, see pbl_* functions,

PBL HASH - an open source memory hash table implementation, see pblHt* functions,

Features
• random access lookups
• sequential access
• regression test frame
PBL KEYFILE - an open source key file implementation, see pblKf* functions,
Features
• ultra fast B* tree implementation for random lookups
• transaction handling
• sequential access methods
• embedable small footprint, < 35 Kb
• arbitrary size files, up to 4 terrabytes
• arbitrary number of records per file, up to 2 ^^ 48 records
• duplicate keys
• advanced key compression for minimal size B trees
• keylength up to 255 bytes
• regression test frame
PBL ISAM - an open source ISAM file implementation, see pblIsam* functions
Features
• ultra fast B* tree implementation for random lookups
• transaction handling
• sequential access methods
• embedable small footprint, < 75 Kb
• arbitrary size files, up to 4 terrabytes
• arbitrary number of records per file, up to 2 ^^ 48 records
• duplicate keys and unique keys
• advanced key compression for minimal size index files
• keylength up to 255 bytes per index
• keylength up to 1024 per record
• regression test frame