System Analysis and Design
The Turnaround is

the elapsed time between the receipt of the input and the availability of the output
a program statement that violates one or more rules of the language in which it is written
a group of related fields
None of these
the key information of programming

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System Analysis and Design
An open rectangle

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

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System Analysis and Design
Unit testing is

making sure that the new programs do in fact process certain transactions according to Specifications
None of these
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 system

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