Database Schema

From GM-RKB
Jump to navigation Jump to search

A Database Schema is a data model that describes a database instance.



References

2015


2009

  • (Wikipedia, 2009) ⇒ http://en.wikipedia.org/wiki/Database_schema
    • … Levels of database schema
      • Conceptual schema, a map of concepts and their relationships.
      • Logical schema, a map of entities and their attributes and relations
      • Physical schema, a particular implementation of a logical schema
      • Schema object, Oracle database object