If you need to map a complex hierarchy into a database with minimal tables while preserving the ability to query specific types efficiently, which inheritance strategy would you choose and what are the trade-offs?
- TPC: This strategy maps each concrete class to its own table, providing a clear separation of concerns and potentially simplifying queries.
- TPH: This strategy minimizes the number of tables in the database, leading to simpler queries and potentially better performance.
- TPT: This strategy ensures that each entity type has its own table, which can improve query performance by reducing the size of individual tables.
- Table Per Concrete class (TPC) strategy: Creates a table for each concrete class in the inheritance hierarchy. Table Per Hierarchy (TPH) strategy: Combines all entity types into a single table. Table Per Type (TPT) strategy: Creates a separate table for each type. Table Splitting: Splits the properties of a single entity into multiple tables.
The Table Per Concrete class (TPC) strategy would be suitable for mapping a complex hierarchy into a database with minimal tables while still allowing efficient querying of specific types. By creating a table for each concrete class, TPC maintains a clear and concise database schema, making it easier to understand and manage. However, this strategy may result in redundant columns and potential data duplication, as each table represents a specific class in the hierarchy. Developers should carefully consider the trade-offs between simplicity and redundancy when choosing TPC for their Entity Framework implementation.
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