Can I have a primary key without clustered index ? Also can I have multivalued clustered index?

Question

Folks, I would like to understand the answer for the following questions:

1. Can I have a primary key without clustered index ? ( I am aware that when we creat

Answer 1

MySQL and SQL-SERVER are different RDBMS. They have different capabilities and different syntax.

When using InnoDB, MySQL always makes the PK the clustered index.

SQL-SERVER, however, will let you create a PK without the CLUSTERED keyword, and let you use it within another index instead.

In both cases, PrimaryKeys and Indexes (clustered or not) can cover multiple fields.