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db:sql_errelationships [2013/03/16 17:40] (current)
Line 1: Line 1:
 +==== ER MODEL - RELATIONSHIPS ====
  
 +
 +This document is prepared as pdf. \\ 
 +{{:​db:​er_model_-_relationships.pdf | Download here }} 
 +
 +Content:
 +
 +One-to-one relationships
 +  * Both entities mandatory
 +  * One entity mandatory, one optional
 +  * Both entities optional
 +One-to-many relationships
 +  * Both entities mandatory
 +  * One entity mandatory, one optional
 +Many-to-many
 +  * Both entities optional
db/sql_errelationships.txt ยท Last modified: 2013/03/16 17:40 (external edit)