System Analysis and Design
Main characteristic of "ring", in Data structure, is

Many records point to one record
First record points only to the last record
Each record points to all other records
Last record points to the first record

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System Analysis and Design
A Decision table

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

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System Analysis and Design
Sequential or series 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
testing changes made in an existing or a new program
is checking the logic of one or more programs in the candidate system

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System Analysis and Design
Top-down programming is

a series or group of components that perform one or more operations of a more complex system
a map of the programmer's view of the data
an approach in which the top module is first tested then program modules are added from the highest level to the lowest level
a group of related fields

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