Itzam/C++ 2.0.0

Itzam/C++ wraps the Itzam database engine with C++ templates for both simple and complex database classes.
Itzam/C++ wrapper supports B-tree indexes with unique or duplicate keys, and includes multithreaded resource locking.
Complete class documentation is embedded in the source code and available online.
Itzam creates and manipulates files containing variable-length, random access records; these records can be access via a variety of index types. Currently supported indexes include:
B-tree
A B-tree index stores and retrieves indexes by a program-defined key value -- for example, a string or a number that uniquely identifies the content of the record. B-tree indexes also maintain a programmer-defined order for keys, thus allowing sequences of records to be retrieved in alphabetic or numeric order.
Sparse Matrix
In a sparse matrix index, records can be referenced by their column and row coordinates in a two-dimensional grid. This is extremely fast, and useful for tabular data (as in spreadsheets).
Future Index Types
Geographical (longitude and latitude) and semantic (e.g., Bayesian) indexes are in development and testing.
Main features:
Small Footprint
- Itzam Core adds less then 6K bytes to a program when linked statically.
Portability
- Itzam is deliberately portable across operating systems and platforms. A database created on Windows is readable by an Itzam application on a Linux machine. The current release ships with support for building and testing on Unix, Linx, and Windows operating systems.
No Dependencies
- Itzam does not have any dependencies on external libraries or components, beyond the common elements included with every Standard C compiler.
Scalability
- Itzam supports various levels of complexity and abstraction, based on your needs and the environment inhabited by your application, Use the core C library for small and embedded projects
Flexibility
- Build your databases with indexes embedded in data files, or separate key information for the data it references, to provide different indexing schemes for different purposes. Iterator selectors provide flexible filtering to define subsets of a database.
Dual Licensing, GPL and Commercial
- Itzam can be licensed under either the GNU General Public License (GPL) or a simple non-free (closed-source) license. The GPL version is provided as is without support, while the commercial license provides technical assistance and notice of updates and bug fixes.
64-bit File Access
- Itzam is designed with 64-bit addressing in mind, and works with 64-bit Sun Solaris and 64-bit Linux. By default, the compiler generates 32-bit code addressing up to 4GB or file space; however, Itzam can be compiled to use 64-bit file addressing simply by defining the preprocessor symbol ITZAM64.
C++, Python, and Fortran 95 Abstractions
- The core library, written in ANSI C, operates at a low-level, working directly with the operating system. While a low-level library can be a powerful tool for embedde3d and small systems, large-scale projects can benefit from a higher-level of abstraction. Development and testing is underway for C++, Python, and Fortran 95 "wrappers".
Documentation
- Ive written tutorial and API documentation to accompany Itzam. A complete example application, a contact database, is the basis for the tutorial.
Enhancements:
- This release adds support for hash indexes and atomic file transactions with commit/rollback.
- There are also minor documentation and code clean-ups.