Which trade-off best describes surrogate keys (e.g., identity/UUID) compared to natural keys?

Problem Statement

Explanation

A surrogate key decouples identity from volatile business fields and keeps foreign keys narrow and stable. The cost is another column and an extra uniqueness rule if you still need to enforce natural key uniqueness.

Code Solution

SolutionRead Only

CREATE TABLE products (
  id BIGSERIAL PRIMARY KEY,
  sku TEXT UNIQUE
);

Practice Sets

This question appears in the following practice sets:

Constraints, Keys & Data Integrity

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Which trade-off best describes surrogate keys (e.g., identity/UUID) compared to natural keys?

Problem Statement

Explanation

Code Solution

Practice Sets

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Master Interviews Anywhere, Anytime

Which trade-off best describes surrogate keys (e.g., identity/UUID) compared to natural keys?

Problem Statement

Explanation

Code Solution

Practice Sets

Related Questions

Which SQL statement retrieves all columns and rows from a table named employees?

Which clause filters rows before aggregation and affects which rows are grouped?

What is the default sort order when ORDER BY is used without ASC or DESC?

Which construct is commonly used to paginate results in SQL engines like Postgres and MySQL?

Which predicate correctly checks for missing values in standard SQL?

More from SQL & Databases

Master Interviews
Anywhere, Anytime