Lists of database relationship

• Normal Relations
  • One - One (1-1)
  • One - Many / Many - One (1-M)
  • Many - Many (M-M)
  • Self relationship
• Participation level
  • Mandatory
  • Optional

Normal Relations

One - One (1-1)

One - Many / Many - One (1-M)

Many - Many (M-M)

Self relationship

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Participation level

Mandatory

Optional

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Reference Sources

• https://code.tutsplus.com/articles/sql-for-beginners-part-3-database-relationships--net-8561