Physical Database Design
Which of the following is not a factor to consider when switching from small to large block size?

Random row access speed
Block contention
The length of all of the fields in a table row
The number of columns

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Physical Database Design
Which of the following are integrity controls that a DBMS may support?

Assume a default value in a field unless a user enters a value for that field.
Limit the use of null values in some fields.
All of these
Limit the set of permissible values that a field may assume.

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