Multiple choice technology databases

Which of the following is not a logical database structure?

  1. Chain

  2. Network

  3. Tree

  4. Relational
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Chain is a physical storage structure used in older file systems and some database implementations, not a logical database model. The logical database models are Network (many-to-many relationships), Tree/Hierarchical (parent-child relationships), and Relational (tables with keys). Chain describes how data blocks are linked on disk.

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