Explain PostgreSQL foreign data wrappers (FDW).
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What are PostgreSQL materialized views and their benefits?
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Explain PostgreSQL inheritance and its use cases.
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What are PostgreSQL advisory locks and when to use them?
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Explain PostgreSQL LISTEN/NOTIFY mechanism.
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What are PostgreSQL custom operators and how to create them?
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Explain PostgreSQL row-level security (RLS).
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What are PostgreSQL range types and their applications?
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What is the purpose of pg_stat_statements extension?
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Which parameter controls the number of background writer processes?
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What does the random_page_cost parameter affect?
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Which system catalog contains information about indexes?
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What is the purpose of work_mem parameter?
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Explain PostgreSQL tablespaces and their benefits.
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What are PostgreSQL window functions and provide examples.
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