System Analysis and Design
The approach used in top-down analysis and and design is

to identify a top level function and then create a hierarchy of lower level modules and components
All of these
None of these
to prepare flowcharts after programming has been completed
to identify the top level functions by combining many smaller components into a single entity.

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System Analysis and Design
Data manipulation language (DML)

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

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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
all of the listed here
the branch, to be followed, depends on the conditions and decisions, to be made
the root is drawn on the left and is the starting point on the decision sequence

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