PostgreSQL is a robust relational database system with over 25 years of active development that runs on all major operating systems. It is fully ACID compliant, and has full support for foreign keys, joins, views, triggers, and stored procedures (in multiple languages). It includes most SQL92 and SQL99 data types, including INTEGER, NUMERIC, BOOLEAN, CHAR, VARCHAR, DATE, INTERVAL, and TIMESTAMP. It also supports storage of binary large objects, including pictures, sounds, or video. It has native programming interfaces for C/C++, Java, .Net, Perl, Python, Ruby, Tcl, and ODBC, among others, and exceptional documentation.
The stx::CBTreeDB is a collection of C++ classes with which read-only key-value database files can be created and read. A database efficiently maps a large number of integral fixed-length keys to opaque binary value blobs. Variable-length or duplicate keys are currently not supported. Keys are organized into a highly compact index structure, which is very similar to a B-tree and allows very fast key lookups. Both keys and values are stored in order and thus queries in a local proximity can benefit from caching effects. All applications mapping a large number of constant, integral keys to string or data blobs can benefit from this library.
db.* is a database management system (DBMS) designed to provide powerful, flexible, high-performance capabilities for developing embedded database applications. By combining the network and relational model technologies in a single system, it lets you organize and access information efficiently, regardless of the complexity of the data. The database has a very small footprint and because it is possible to use the network model to store some of the data, it can be very fast. It is also well-documented and quite simple to learn because of its C-based API.
Webdata Pro creates relational database solutions online, and requires no technical, programming, or SQL knowledge. It runs on any server that has MySQL. While many have mastered the HTML skills necessary to publish a Web page, integrating a database into a Web site remains a daunting task for most non-programmers. Webdata Pro solves this problem. Its Web interface provides the administrator a point-and-click path through building tables, designing search pages/reports/forms, managing records, and defining member accounts. All functions are accessed through a browser with simple, non-technical instructions. It has a built-in shopping cart, and can easily import data from other programs and upload images or documents through the browser. The program has powerful member privileges, allowing the administrator to control each member's access to the data. Calculation fields such as SUM, AVG, COUNT, ESCAPE, IF-ELSE, and more are included. Further, the software creates complex JOIN queries automatically. The administrator just selects the fields and Webdata Pro does the rest. It is designed with speed in mind, and is able to search millions of records quickly. Individually customized reports and forms can be generated using any HTML editor.