KundID101

KundID101 is a mock customer identifier used in software development, data modeling, and educational materials to illustrate how customer records are identified and accessed in a database. The term combines the prefix KundID, commonly understood as a shorthand for customer ID, with a numeric suffix that designates a representative example rather than a real person.

Origin and typical usage: The identifier appears in German-language tutorials and international documentation as a stand-in primary key value in a Customers table. It is usually presented alongside sample fields such as name, email, address, and order history to demonstrate data retrieval, filtering, and reporting.

Structure and interpretation: In a relational model, KundID101 acts as a surrogate key or natural key depending on the example. The numeric suffix (101) is arbitrary and can be varied (e.g., KundID001, KundID202). The value is treated as unique within the sample dataset, enabling joins to related tables such as Orders or Invoices.

Practical notes: When used in demonstrations, KundID101 should be paired with synthetic or anonymized data to prevent accidental exposure of real individuals. It is not tied to an actual customer outside the example context.

See also: Customer identifier, Primary key, Test data, Sample dataset.