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What is Understanding Surrogate Data Types about?
The chapter introduces the SURROGATE data type, which serves as a unique identifier for time-varying objects without observable values. Surrogates must be assigned new values or linked to existing tuples, and they cannot be viewed or used in certain query contexts. While surrogates supplement keys in databases, they do not replace them, as keys relate data to real-world entities.
- Author
- Javier Zhiko Díaz
- Language
- EN