iGCSE ICT Chapter 7 Systems Life Cycle
Analysis - correct answer-The first phase in the systems life cycle.
Observation - correct answer-Watching people using the system during the research of an
existing system.
Questionnaires - correct answer-Asking questions about the system during the research of
an existing system.
Interviews - correct answer-Taking to people about the system during the research of an
existing system.
Looking at existing paperwork - correct answer-Examining documents during the research of
an existing system.
Data Flow Diagram (DFD) - correct answer-Shows the flow of data in a process/system.
Systems flowcharts - correct answer-Shows how data flows through a system and also how
decisions are made
Design - correct answer-The second phase in the systems life cycle.
Verification - correct answer-A process that checks the accuracy of data entry or that data
has not been corrupted during transmission, often using double entry or visual verification.
Validation - correct answer-A process where the software checks that the data entered into it
is reasonable.
Data dictionary - correct answer-Used to define the field names, field length, data type and a
suitable validation check.
Unit testing - correct answer-Testing individual modules of a system.
Integration testing - correct answer-Testing the systems as a whole.
Normal data - correct answer-Data that is expected and will work.
Extreme data - correct answer-Data that is at the limits of what is expected (but will work).
Abnormal data - correct answer-Data that should not be entered / accepted.
Live data - correct answer-Data that is actually used in the real system.
Direct implementation - correct answer-Old system is stopped overnight, and the new
system is introduced immediately.
Analysis - correct answer-The first phase in the systems life cycle.
Observation - correct answer-Watching people using the system during the research of an
existing system.
Questionnaires - correct answer-Asking questions about the system during the research of
an existing system.
Interviews - correct answer-Taking to people about the system during the research of an
existing system.
Looking at existing paperwork - correct answer-Examining documents during the research of
an existing system.
Data Flow Diagram (DFD) - correct answer-Shows the flow of data in a process/system.
Systems flowcharts - correct answer-Shows how data flows through a system and also how
decisions are made
Design - correct answer-The second phase in the systems life cycle.
Verification - correct answer-A process that checks the accuracy of data entry or that data
has not been corrupted during transmission, often using double entry or visual verification.
Validation - correct answer-A process where the software checks that the data entered into it
is reasonable.
Data dictionary - correct answer-Used to define the field names, field length, data type and a
suitable validation check.
Unit testing - correct answer-Testing individual modules of a system.
Integration testing - correct answer-Testing the systems as a whole.
Normal data - correct answer-Data that is expected and will work.
Extreme data - correct answer-Data that is at the limits of what is expected (but will work).
Abnormal data - correct answer-Data that should not be entered / accepted.
Live data - correct answer-Data that is actually used in the real system.
Direct implementation - correct answer-Old system is stopped overnight, and the new
system is introduced immediately.
