Daniel Oltmanns

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db4o, an open source object database system with broad industry applicability, belongs to a popular database management systems that has close to 2 million downloads to date. Here we'll illustrate the features and application areas of such a database and compare db4o against relational DBMS/object relational (OR) mappers. It seems as if object databases are enjoying a rebirth. After the disastrous but probably quite purifying hype of the '90s, many providers now offer sophisticated products. Besides db4o, the products by Intersystems, Objectivity, Gemstone, and Versant deserve to be mentioned. At this point the most important question is: When or why should I use an object database? There are many studies available that compare the benefits of object database management systems (ODBMS) and relational database management systems (RDBMS): Because of their independen... (more)