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प्रश्न
What is a relationship in databases? List its types.
टिप्पणी लिखिए
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उत्तर
There exists a relationship between two tables when the foreign key of one table references the primary key of other tables.
The Entity-Relationship(ER) diagram is based on the three types listed below.
- One-to-One relationship
- One-to-Many relationship
- Many-to-Many relationship
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