System Analysis and Design
A Decision table

documents rules, that select one or more actions, based on one or more conditions, from a set of possible conditions.
gets an accurate picture of the system
shows the decision paths
represents the information flow

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System Analysis and Design
Acceptance testing is

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

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System Analysis and Design
An open rectangle

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

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