ROBLOX SEX 27

Requirement

Requirement

A statement of some behavior or property that the software must exhibit in order to fulfill the product vision

Functional requirement

A statement about what the software must do.

Non-functional requirement

A statement about how the software must behave

Product vision

A high-level description of the problem to be solved and the solution to be developed

Efficiency

How much memory or CPU the software must use software must be.

Reliability

How rarely the software must crash or produce incorrect results

Compatibility

What other software or hardware the software must work with

Availability

What percentage of the time the software must be available

Security

The level of protection the software must provide against unauthorized access and other security threats

Usability

The ease of use, pleasurability, and learnability of the software.

Scalability

How well the software must perform as the number of users or the amount of data increases

Maintainability

How easy it must be to fix bugs, add features, or otherwise modify the software

Portability

How easy it must be to move the software from one platform to another

Stakeholder

Anyone who has an interest in the software

Requirements document

A formal document that describes the requirements of the software

User story

A lightweight way of documenting requirements, typically consisting of a short, informal description of a feature of the software, written from the perspective of the end user

Use case

A lightweight way of documenting requirements, typically consisting of a short, informal description of a feature of the software, but detailed enough to be used as a basis for testing

User interface mockup

A simpler and less expensive version of a prototype, used to help stakeholders understand what the software will look like and how it will behave

Storyboard

A series of pictures or drawings that show how the software will be used

Diagram

A visual representation of how the software will work behind the scenes

Requirements review

The process of ensuring that the requirements are correct, complete, consistent, and unambiguous

Performance

How fast the software must be