SQL for Database Construction
To update an SQL view, the DBMS must be able to associate the column(s) to be updated with:

a particular column in a particular row.
a particular column in a particular underlying table.
a particular row in a particular underlying table.
None of these

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SQL for Database Construction
When using the SQL INSERT statement:

rows cannot be copied in mass from one table to another only.
rows can be inserted into a table only one at a time only.
rows can either be inserted into a table one at a time or in groups.
rows can be modified according to criteria only.

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