System Analysis and Design
In a Decision tree

the nodes represent the conditions, with the right wise of tree listing the actions to be taken
the root is drawn on the left and is the starting point on the decision sequence
the branch, to be followed, depends on the conditions and decisions, to be made
all of the listed here

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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
running the system with line data by the actual user
is checking the logic of one or more programs in the candidate system
testing changes made in an existing or a new program
None of these

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System Analysis and Design
Cost-Benefit analysis

evaluates the tangible and non-tangible factors
None of these
compares the cost, with the benefits, of introducing a computer-based system
All of these
estimates the hardware and software costs

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System Analysis and Design
Data Definition Language (DDL)

specifies for the DBMS what is required; the techniques used to process data
determine how data must be structured to produce the user's view
describes how data are structured in the data base
all of the listed here

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