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WorksheetsQuizizz SAD 16032020
Total questions: 16
Worksheet time: 48mins
Define Functional Decomposition Diagram (FDD).
Top down representation of a function or process
Determine how data must be structured to produce the user’s view
Specifies for the DBMS what is required
The techniques used to process data
Identify the CORRECT statement of Data Flow Diagram(DFD).
Data flows in a DFD may be bidirectional
The level 0 DFD only consists of the main process
Data can flow directly from a data store to an external entity
Every process in a DFD must connect to two other processes.
Identify the advantages of questionnaires.
i. Simple and quick for the respondent to complete
ii. Allow more detailed questions to be asked
iii. Respondent is not influenced by others in the group
iv. A large sample of the given population can be contacted at relatively low cost
i, ii and iii
i, ii and iv
i, iii and iv
ii, iii and iv
Identify the CORRECT example for system requirement under the process category.
The purchasing system must provide suppliers with up-to-date specification.
Response time must not exceed four seconds.
The student records system must calculate the GPA at the end of each semester.
Data entry screens must be uniform, except for background color, which can be changed by the user.
Choose UML diagram that adds the dimension of time to object interactions.
Communication diagram
Interaction Overview diagram
Sequence diagram
Use Case Diagram
Choose an analyst must do in order to understand the working of an organization based system is being design.
Look at only current work and document flow in the organization
Discuss with top level and middle level management only
Interview top, middle, line managers and also clerks who will enter data and use the system
Only clerical and middle level staff who have long experience in the organizations and will be users of the system
Leveling and balancing must use to create lower-level diagrams. Choose the process of leveling DFD.
Examining complex process in a DFD and expanding them into a new DFDs with more processes which are easy to understand.
Merging a number of simple processes in a DFD into a complex processes in a new DFD
Expanding the functions of a number of external entities into simpler functions.
Splitting a number of data flows into simpler data flows.
Identify the basic level of a Data Flow Diagram (DFD).
Primitive DFD
Unit DFD
Context DFD
Level-1 DFD
Define external entity.
Unit outside the system being designed which can be controlled by an analyst.
Unit outside the system whose behavior is independent of the system being design
A unit external to the system being designed
A unit which is not part of a DFD
"Data flow diagrams that specify what people and technologies are used in which processes to move and transform data, accepting inputs and producing outputs."
Logical data flow diagram
Reference data flow diagram
Physical data flow diagram
Logistic data flow diagram
List the main objectives that need to be considered in user interface design
i. Provide feedback user
ii. Create a complicated layout and design
iii. Minimize important input data
iv. Use familiar terms and images
i and iii
i and iv
i, iii and iv
ii, iii and iv
Select the type of validation rules used when the data must be in some predetermined sequence.
Sequence check
Existence check
Reasonableness check
Combination Check
Choose the value of a good input design.
The end users like the system
The users know how to use the system
The attractiveness and effectiveness of input volume
The quality, accuracy, and timeliness of input data
- Displays only those records that meet a specific condition or conditions.
- Useful when the user wants information only on records that might require action, but does not need to know the details.
Detail Report
Summary Report
Exception Report
Full Report
Choose a GUI control should be used for an input based on statements below:
- The data item has a large number of predefined values
- screen space is tight
Combination box
Drop down list
Text box
Switchboard
It’s a risk-driven model which means that the overall success of a project highly depends on the risks analysis phase. It has four iteration and one must do risk analysis requires specific expertise on every iteration.
Waterfall
Iterative
Spiral
Joint Application Development
