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How to implement one-to-one,one-to-many and many-to-many relationships while designing tables?
Implementations of relationship is there : 

> One-to-One relationship : Its relationship bassiccaly use for only single table implementation and rarely for two tables with primary and foreign key relationships. 
> One-to-Many relationships :Its relationship is bassically yse for the implemented by splitting the data into two tables with primary key and foreign key relationships.

> Many-to-Many relationships : Its relationship is bassically use for implemented using a junction table with the keys from both the tables forming the composite primary key of the junction table.