Relationship Configuration

This section describes the relationship() function and in depth discussion of its usage. For an introduction to relationships, start with the Object Relational Tutorial and head into Building a Relationship.

• Basic Relationship Patterns
  • One To Many
  • Many To One
  • One To One
  • Many To Many
  • Association Object
• Adjacency List Relationships
  • Composite Adjacency Lists
  • Self-Referential Query Strategies
  • Configuring Self-Referential Eager Loading
• Linking Relationships with Backref
  • Backref Arguments
  • One Way Backrefs
• Configuring how Relationship Joins
  • Handling Multiple Join Paths
  • Specifying Alternate Join Conditions
  • Creating Custom Foreign Conditions
  • Using custom operators in join conditions
  • Overlapping Foreign Keys
  • Non-relational Comparisons / Materialized Path
  • Self-Referential Many-to-Many Relationship
  • Composite “Secondary” Joins
  • Relationship to Non Primary Mapper
  • Row-Limited Relationships with Window Functions
  • Building Query-Enabled Properties
• Collection Configuration and Techniques
  • Working with Large Collections
  • Customizing Collection Access
  • Custom Collection Implementations
  • Collection Internals
• Special Relationship Persistence Patterns
  • Rows that point to themselves / Mutually Dependent Rows
  • Mutable Primary Keys / Update Cascades
• Relationships API
  • relationship()
  • backref()
  • relation()
  • dynamic_loader()
  • foreign()
  • remote()