Hierarchical data management in relational systems

This special issue (part 2 of a series began with the special issue in October-December 2012) tells the history of how IBM and several new, independent software companies built companies that supplanted the database management system companies and their ...

Much of the data we deal with every day is organized hierarchically: file systems, library classification schemes and yellow page categories are salient examples. Business data too, benefits from a hierarchical organization, and indeed the hierarchical ...

The use of relations as a model of information stored in large data bases has several significant advantages over other methods of data description. It is often, however, criticized as difficult to implement efficiently. In this paper, some of the pros ...