Database Redesign
The process of reading a database schema and producing a data model from that schema is known as:

database design.
None of these
reverse engineering.
data modeling.

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Database Redesign
The EXISTS keyword will be true if:

any row in the subquery meets the condition only.
both of these two conditions are met.
neither of these two conditions is met.
all rows in the subquery fail the condition only.

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