System implementation and deployment

Asper School of Business University of Manitoba

Systems Analysis & Design

Instructor: Bob Travica

System implementation and deployment

Updated: November 2014

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Outline

System implementation System testing Software versioning System deployment Data porting and conversion System deployment strategies

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Implementation and deployment

activities

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Implementation Implementation = software

development or assembling according to previously created design.

Modularized design (objects and packages; components) – interaction among system components must be implemented using certain standard (SOAP/XML, CORBA, COM)

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Testing Testing = a process of identifying system

defects

Develop test cases and test data A test case specifies starting & ending

state, and events to which the software must respond

Test data – data in the defined starting state, which must reach a defined ending state after being exposed to certain event (input).

Modern approach: build to predefined test (Agile Methodology)

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Kinds of system tests

Unit testing - individual methods, classes, or components before they are integrated with other software

Defect example: A method for calculating taxes outputs incorrect results.

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Kinds of system tests (cont.)

Integration testing - evaluates the behavior of a group of methods or classes (interface compatibility, unexpected parameter values or state interaction, run-time exceptions)

Applied to system or sub-system

Defect example: Results of retrieving a record significantly differ when real database as opposed to dummy database is retrieved

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Kinds of system tests (cont.)

Usability testing – software works but fails some of the usability requirements (easy to learn, use & navigate, task efficiency)

Acceptance testing – involves users to determine if system in overall fulfills user requirements

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Programmers Unit testing Testing buddies can test other’s

programmer’s code Quality assurance personnel

Integration and Usability Users

Acceptance testing Volunteers for testing beta version of

software

Who Tests Software

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Versioning Alpha version

Test version that is incomplete but ready for some level of testing; dummy data used

Beta version Test version that is stable enough to be

tested by end users for an extended period of time; real data used

Production version System version that is formally released

to users or made operational for long-term use

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System deployment

Activities to make a new system operational

Includes: Installation and configuration User training Porting and Converting data Deployment strategy

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Data porting & converting

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Deployment strategy

Direct deployment

Parallel deployment

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Deployment strategy

Phased deployment