13. What is srs? Why do we need it?

SRS (Software Requirements Specifications)

SRS IS SOFTWARE REQUIREMENT SPECIFICATION DOCUMENT,WHICH

CONTAINS ALL THE INFORMATION REGARDING THE SYSTEM.IT

CONTAINS TECHNICAL AS WELL AS NON TECHNICAL

INFORMMATION.AFTER THE FEASIBILTY STUDY AN SRS IS PREPARED

BY A TEAM WHICH CONATAINS SYSTEM ANALYST,PROJECT

MANAGER,TEST LEAD AND CLIENT.

A software requirements specification (SRS) – a requirements specification for a software system – is a complete description of the behavior of a system to be developed. It includes a set of use cases that describe all the interactions the users will have with the software. In addition to use cases, the SRS also contains non-functional requirements. Non-functional requirements are requirements which impose constraints on the design or implementation (such as performance engineering requirements, quality standards, or design constraints).

14. What is Feature? Why do we need it?

Feature (software design) is an intentional distinguishing characteristic of a software item (in performance, portability, or - especially - functionality). A system is said to be feature-rich when it has many options and functional capabilities available to the user. Progressive disclosure is a technique applied to reduce the potential confusion caused by displaying a wealth of features at once.

15. (Context: Design patterns) Describe Singleton pattern. Give an example

The singleton pattern is one of the simplest design patterns: it involves only one class which is responsible to instantiate itself, to make sure it creates not more than one instance; in the same time it provides a global point of access to that instance. In this case the same instance can be used from everywhere, being impossible to invoke directly the constructor each time.

16. What are the characteristics of a good design?

• Recognizable architectural styles or patterns; components with good design characteristics; thereby facilitating implementation and testing

• Modularity

• Distinctness

• Independence of functional characteristics

• Little complexity of connections

17. What are some of the responsibilities of project manager?

• Project management consists of managing the production of a product within given time and funding limits. Since this requires human resources, project management involves not only technical and organizational skills, but also the art of managing people. Project management involves the planning, monitoring, and control of the people, process and events that occur as software evolves from preliminary concept to operational implementationPlanning, monitoring and control of

  • People

  • Process

  • Events

• as software evolves from preliminary concept to operational implementation

Management activities

Proposal writing.

Project planning and scheduling.

Project costing.

Project monitoring and reviews.

Personnel selection and evaluation.

Report writing and presentations.

• Why is it important?

  • As we have just seen, many projects fail

  • Building software is a complex task – particularly if it involves a lot of people and takes place over a long period of time

• What are the steps?

  • Understand the four P’s:

    • People – must be organised to work effectively

    • Product – must have effective communication with the customer to specify scope and requirements

    • Process – must be appropriate for people and product

    • Project – must estimate effort & time needed, define work products, establish quality checkpoints, establish methods to monitor & control work defined by plan

  • We will focus on people and project