A database organization method that is structured in a hierarchy. All access to data starts at the top of the hierarchy and moves downward; for example, from customer to orders, vendor to purchases, ...

I have never done any serious SQL design before. Anyways I have to store a hierarchical data structure, similar to a tree in a SQL database.<BR><BR>Right now I simply add a "parent_id" column in each ...

A tabular file has nothing comparable to a segment. The concept of data segments is one of the things that makes a hierarchical database different from a SAS data set and other tabular files. The rows ...

LONDON--(BUSINESS WIRE)--Quantzig, a pure-play analytics solutions provider, has announced the completion of their latest article on the four key types of database management systems. Data is the new ...

A database that maintains a set of separate, related files (tables), but combines data elements from the files for queries and reports when required. The concept was developed in 1970 by Edgar Codd, ...

A database management systems, commonly called a DBMS, is integral to business practice for a number of different industries. A DBMS is a software system that companies use to store and retrieve vast ...

In previous articles, I have discussed XML’s value as a data format for Linux users. I have also discussed a wide variety of Linux tools for processing XML. But the data that XML usually represents ...