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Advanced SQL

Advanced SQL
A correlated subquery is where the outer query depends on data from the inner query.

True
False

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Advanced SQL
Which of the following statements is true concerning routines and triggers?

Both have to be called to operate.
Both consist of procedural code.
Both are stored in the database.
Both run automatically.

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Advanced SQL
A transaction is the complete set of closely related update commands that must all be done, or none of them done, for the database to remain valid.

False
True

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Advanced SQL
What type of join is needed when you wish to return rows that do have matching values?

All of these
Natural join
Equi-join
Outer join

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Advanced SQL
Outer join is the same as equi-join, except one of the duplicate columns is eliminated in the result table.

False
True

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Advanced SQL
Which of the following is one of the basic approaches for joining tables?

Natural join
Union Join
All of these
Subqueries

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