This implementation is based on another open-source B+ tree implementation.

https://github.com/zcbenz/BPlusTree (Copyright (c) 2012 Zhao Cheng)

• bpt.h and bpt.cc is the implementation of B+ tree. predefined.h defines the tree order, key/value type, key compare function and other tree settings, modify it to satify your need. Just include these tree files in your project to use the B+ tree.
• zbpt.h and zbpt.cc is the implementation of zone map enhanced B+ tree and it inherites the baseline B+ tree class.
• dbgen.cc and zdbgen.cc generate the database index file by inserting the data records one by one for baseline and zone map enhanced B+ tree.
• benchmark.c code for runing benchmark.
• util/unit_test.cc is the test code for baseline B+ tree.
• dump_numbers.cc can write some numbers into a database, so you can quickly test out the B+ tree.
• cli.cc is a command tool to manipulate an exisiting database.

The code currently can be only compiled and run on Linux because some special system calls for memory management.

# to compile
make

1. generate the lineitem table flat file using TPC-H benchamrk generation tool
2. ./data_process <input-data-file> to get flat file with only three date columns
3. ./db_gen or ./zdb_gen to generate database file for the baseline and the zonemap enhanced version.
4. ./benchmark to run benchmark

The MIT License (MIT)