Giuseppe Castagna, Ecole Normale Superieure Provides the theoretical background needed to study foundation of object-oriented programming and gives a unified presentation of several theoretical models of object-oriented languages. LINK
Sun, The Java Tutorial A great tutorial to get acquainted with OOP. LINK
Segment: Industry – Aerospace User: Tilmann Zäschke researcher at ETH, Switzerland. DOWNLOAD (PDF)
Brian Clark. Graph technology offers a superior solution for relationship analytics requirements, enabling organizations to traverse any number and complexity of relationships in virtually any amount of distributed data, from any number of sources...
db4objects. Open source object database for Java and .NET. Free GPL download includes an interactive tutorial to get started quickly. LINK
Intersystems A free, fully-functional, non-expiring, single-user version of Caché. LINK
Peter Baumann, Jacobs University An open-source array DBMS with an OQL-style query language and ODMG-conformant C++ and Java APIs for retrieving and manipulating multi-dimensional arrays (rasters) of unlimited size. LINK
Apache CouchDB CouchDB Tutorial slides presented at ICOODB09 DOWNLOAD (PDF)
Perst Open Source, Object-Oriented Embedded Database Complete Perst software package, with source code. Includes both Perst for Java (including Perst Lite for Java ME) and Perst for .NET, as well as links to the...
Versant Versant Object Database: for complex data storage in C++ and Java. Versant FastObjects .NET: for .NET applications with complex object models LINK (registration required)