People are not born with 'Numbers,' but many systems assign student numbers, customer IDs, etc., to individuals.

These are known as a/an ___________________ key.

Question

People are not born with 'Numbers,' but many systems assign student numbers, customer IDs, etc., to individuals.

These are known as a/an ___________________ key.

BlackTom AI · Accepted Answer

The question discusses assigning identifiers like student numbers or customer IDs to individuals, noting that people aren’t born with these identifiers. Restating the core: these assigned identifiers are a/an ______ key.
Option 1: Natural. This is incorrect because natural keys arise from real-world natural attributes or identifiers that exist inherently in the entity, such as a social security number in some contexts, or a name. In this case, the numbers are created by systems, not inherent to the person.
Option 2: Artificial. This is correct because artificial (or surrogate) keys are system-generated identifiers used to uniquely identify records, such as student numbers or customer IDs, which do not carry business meaning themselves.
Option 3: Unrealistic. This is not a term used in database design for identifiers; it describes feasibility or practicality, not the concept of a key type.
Option 4: Structured. While these keys can be structured (having a format), the defining term for an identifier assigned by a system rather than derived from natural attributes is artificial. Therefore, this option does not capture the fundamental concept as precisely as artificial does.

People are not born with 'Numbers,' but many systems assign student numbers, customer IDs, etc., to individuals. These are known as a/an ___________________ key.单项选择题

类似问题

The database designer creates a(n) _______ when no suitable single-column or composite primary key exists.

According to Xenophanes, what should be avoided at a symposium?

What is "kottabos"?

Why are there so many naked figures in vase iconography?

Why was it necessary to have a "hydria" as part of the ceramic vessels used at a symposium?

For what uses other than sympotic were Greek ceramic vessels used?

Question textFill in the gap with ONE word from the text. Research can help to reduce the amount of Answer 1 Question 6[input] between fauna and humans.

更多留学生实用工具

智能学习助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单