System Analysis and Design
A self check digit is useful in detecting

None of these
Random errors only
All of these
transcription errors only
transposition errors only

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System Analysis and Design
Acceptance testing is

testing changes made in an existing or a new program
running the system with line data by the actual user
is checking the logic of one or more programs in the candidate systems
making sure that the new programs do in fact process certain transactions according to Specifications

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System Analysis and Design
An open rectangle

identifies data flow
defines a source or destination of system data
None of these
is a data store-data at rest, or a temporary repository of data
represents a process that transforms incoming data flow(s) into outgoing data flows

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System Analysis and Design
The background and experience of analyst include;

None of these
competence in system tools and methodologies and a practical knowledge of one or more programming and data base languages.
All of these
a background in systems theory and organization behavior
familiarity with the makeup and inner workings of major application areas such as financial accounting, personnel administration, marketing and sales, operations management, model buil

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