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12 Cards in this Set
- Front
- Back
What are different types of data capture?
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paper forms, on-screen forms, barcode reader, fingerprint reader, card reader, camera
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Give examples of use of different types of data captures,
paper forms, on-screen forms, barcode reader, fingerprint reader, card reader,paper forms, on-screen forms, barcode reader, fingerprint reader, card reader, camera |
paper forms - OMR, MC Questionss;
on-screen forms - Uni application; barcode reader: POS, stock control; fingerprint reader: security door; card reader: EFTPOS camera: still image, student card |
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What are different form controls in an online form? and their use.
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textbox: name
buttons: submit/cancel radio button: gender option checkbox: option for more than one choice; drop-down menus: list selection. |
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What are needed to create a online form for a club membership appliation?
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1. include ALL fields: name, age, gender, address,
2. use of suitable form controls: e.g. radio button for gender/title; 3. enough space for each field: e.g. name easy-to-understand instructions good use of screen area. |
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What is verification?
What is validation? |
Verification is to check that data is correctly entered; i.e. no transcription error.
Validation is to check the data is reasonable/sensible. |
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What are the ways of verification?
What are their advantages/weakness? |
proof reading; viusal check; double entry;
Proof reading: simple/quick but not catching every mistake; double-entry: time consuming but catching almost every mistake. |
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What are data validation techniques?
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Presence check; range check; length check; type check; format check;
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What are the three types of test data?
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1. normal data values: normal data which should be accepted;
2. extreme data values: "boundary" data which are the limits of the normal range and should be accepted. 3. abnormal data values: invalid data which should be rejected. e.g. "age" field for membership, 18 to 60 years old. normal data: 24, 40 extreme data: 18 and 60 abnormal data: 11 and 75 |
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What are the two types of documentation and their use?
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1. user documentation
-for the users -non-technical -how to use the h/w or s/w -e.g. of contents: min h/w and s/w requirement; how to install; how to start/stop; inputs/outputs; troubleshooting guide; error message; etc. 2. technical Documentation: -for maintainers/techincal people -how the system works -contents include: details of h/w and s/w requirement; data structure; expected inputs; validation checks; how data is processed; flowcharts; diagrams of data move. |
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What are the four different ways of implementation? what are their advantages and disadvantages?
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1. Direct changeover
2. Parallel running 3. Phased implementation 4. Pilot running More details, pls go to: http://www.igcseict.info/theory/8/implem/index.html |
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What are the general criteria of evaluating a system?
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1. Efficiency? (both time and resouces.)
2. Effectiveness/Appropriate? 3. Easy to use/User friendly? |
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How is system evaluated?
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check against
1. requirement specification/successful criteria; user requirement 2. Users' responses |