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REQUIREMENT SPECIFICATION (Form-based specifications (Side effects of the…
REQUIREMENT SPECIFICATION
Guidelines for writing requirement
Invent a standard format
Use language in consistent way
:check: SHALL, for mandatory
:check: SHOULD, for desirable
Use text highlight for
keypoint
Include an explanation
Avoid use of computer jargon
Form-based specifications
Side effects of the f(x)
Information needed for the computation
Description of output and where they go to
Definition of the f(x) or entity
Description of action to be taken
Description of inputs &where they came from
Previous and post condition
System Requirement
More technical information
More detail requirement
Ways
Mathematical specifications
Design description language
Structured natural language
Natural language
Graphical notations
Tabular Specification
Used to supplement natural language
Useful
define a number of possible alternative course of action
User
Software requirements document
:star:
DEFINITION
:
Official statement of what is required of the system developer
Possible users
System customers
Managers
System engineers
System test engineers
System maintenance engineers
Understandable by customer and end user
Structured specification
written in standard way
Writing Requirement is limited
Problem of natural language
Requirements confusion
Requirements amalgation
Lack of clarity
Agile Method and Requirement(argue)
Waste of time
Outdated