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.Right now I simply add a "parent_id" column in each of ...

What does hierarchical database actually mean? Find out inside PCMag's comprehensive tech and computer-related encyclopedia.

But fundamentally, SQL and GraphQL have different world views, respectively: uniform backends vs. diverse backends, tables vs. hierarchical data, and universal querying vs. limited querying.

In place of the then prevalent hierarchical database approach, in which the structure of data had to be defined within each application program, Codd’s relational database used a new query language ...

Based on a hierarchical database, the physical-design platform features legacy CDBA (Central Data Base Administrator) and Open Access compliance, eliminating mixed-signal “spaghetti” flows. UniPlan ...

New techniques and technologies are increasingly augmenting the relational database in large-scale distributed computing.