Logical Database Design.
Creating a database logical design is one of the first important steps in designing a database. There are four logical database models that can be used hierarchical, network, relational, or object-oriented.
The first important logical database model. Still found in many mainframe-based, legacy systems. Records are arranged in a top-down parent/child structure. Each child can be related to only one parent
Developed to overcome the limited scope of the hierarchical model. Similar to the hierarchical model only there's no parent/child distinction. Any record ty…
- A Brief History of Databases, describes some old database systems
- Computer Ergonomics in the Workplace
- Logical Database Design.
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