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Database Relationships

src/data/question-groups/full-stack/content/database-relationships.md

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  1. One-to-Many: One record in a table relates to multiple records in another. Handled via foreign keys. Example: A user has many posts.
  2. Many-to-Many: Requires a join table to link records from two tables. Example: students and courses with an intermediary enrollments table.
  3. Primary/Foreign Keys: Establish links between tables for querying and ensuring data consistency.