System Analysis and Design
Direct-access organization

has records placed randomly throughout the file
Stores records sequentially but uses an index to locate records
uses an index for each key type
means storing records in contiguous blocks according to a key.

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System Analysis and Design
A square symbols

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

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System Analysis and Design
Which of the following statements, is (are) not true for the lease option

Insurance, maintenance and other expenses are included in the rental charge
Lease may be written to show higher payments is early years to reflect the decline in value of the system
All of the listed here
Lease charges are lower than rental charges for the same period and are also tax deductable.

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