Ask the Expert

The hierarchical data model

How did the "HIERARCHICAL DATA MODEL" start? What are its constraints?

Requires Free Membership to View

Please provide more context with this question. The hierarchical model can refer to hierarchical storage management (HSM) or to hierarchical structured databases (typically prior to relational databases). For the most part, neither is that interesting today. HSM is probably a little more relevant, but the implementations are difficult and problems can be very difficult to resolve. It began as a tool for managing relatively expensive disk storage in mainframe systems.

Today it can be argued that disk capacity is so cheap that HSM no longer has a purpose.

Marc Farley

Editor's note: Do you agree with this expert's response? If you have more to share, post it in our Storage Networking discussion forum at --> --> .MullaECzaUO^1@.ee83ce4!viewtype=convdate>^1@.ee83ce4!viewtype=convdate or e-mail us directly at

This was first published in October 2001

There are Comments. Add yours.

TIP: Want to include a code block in your comment? Use <pre> or <code> tags around the desired text. Ex: <code>insert code</code>

REGISTER or login:

Forgot Password?
By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Privacy
Sort by: OldestNewest

Forgot Password?

No problem! Submit your e-mail address below. We'll send you an email containing your password.

Your password has been sent to: