OpenLink Virtuoso is a scalable, high-performance SQL-200n compliant object-relational database engine. It provide sophisticated database management for SQL, XML, and RDF. All interaction with Virtuoso occurs via its support of industry standard query languages, protocols, APIs, and data formats such as: ODBC, JDBC, OLE-DB, ADO.NET, XMLA, SQL, SPARQL, XQuery, SOAP, HTTP, WebDAV, SyncML, Atom (Publishing and Syndication), RSS, RDF, and more.
Tdbengine is an RDBMS with an integrated programming language. It represents the enhancement of the famous DOS-TDB, and is designed to handle databases on the Web. It connects to the Web server using the standard CGI interface, or runs on the command line. It is very small (about 400 KBytes), extremely quick, and easy to administrate. Its features are full text indexing, an automatic data link system, and the script language EASY, which replaces the commonly used SQL with its modular code.
tdbSQL is a complete implementation of an EASY SQL server for the tdbengine RDBMS. It is a client-server solution that can be accessed via TCP and makes it possible to access tdbengine DBs from languages other than EASY, including Perl, PHP, C, C++, C#, and Java. It combines the perfomance of the tdbengine with the feeling and standards of other SQL databases and features integrated rights management.
The EASY pdflib provides a set of functions and procedures which allow an easy generation of PDF files from within tdbengine-based Web applications. It generates Adobe Acrobat Reader compliant output. There are common functions for drawing simple texts, tables, or graphics, as well as table access functions to directly output database contents.