System Analysis and Design
Data manipulation language (DML)

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
describes how data are structured in the data base

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System Analysis and Design
Sequential organization

Stores records sequentially but uses an index to locate records
None of these
uses an index for each key type
has records placed randomly throughout the file
means storing records in contiguous blocks according to a key.

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System Analysis and Design
The advantage of Purchase Option is (are)

No financing is requird. The risk of system obsolescence is shifted to the lessor
All of these
Insurances, maintenance, and other expenses are included in the rental charge
the flexibility of modifying the system at will
None of these

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