Identity as a service (IDaaS) comprises cloud-based solutions for identity and access management (IAM) functions, such as single sign-on ( SSO ). These methods allow all users (customers, employees, and third parties) to more securely access sensitive information both on and off-premises.

10 Answers Sorted by: 86 Most of the answers here are on the right track. However, a row is not a tuple. Tuples * are unordered sets of known values with names. Thus, the following tuples are the same thing (I'm using an imaginary tuple syntax since a relational tuple is largely a theoretical construct):