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WithoutBook LIVE Mock Interviews PostgreSQL Related interview subjects: 24

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Ques 2

What is a stored procedure, and how can you create one in PostgreSQL?

A stored procedure is a set of SQL statements stored in the database and executed as a single unit. You can create one using the CREATE PROCEDURE statement.
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Ques 3

How do you perform a backup and restore in PostgreSQL?

You can use the pg_dump utility to create a backup and the pg_restore utility to restore the database from a backup file. Additionally, you can use the pg_basebackup tool for physical backups.
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Ques 4

How can you handle concurrent access and prevent data corruption in PostgreSQL?

Concurrency control techniques include using transactions, locks, and isolation levels to ensure data consistency and prevent conflicts between multiple transactions.
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Ques 5

What is the purpose of the pg_stat_statements module in PostgreSQL?

The pg_stat_statements module provides statistics about SQL statements executed by a server, helping identify slow queries and optimize database performance.
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Ques 6

How can you implement full-text search in PostgreSQL?

PostgreSQL provides the tsvector and tsquery data types along with the full-text search functions. To implement full-text search, you can use the tsvector column for indexing and the @@ operator for searching.
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Ques 7

Explain the purpose of the pg_upgrade utility in PostgreSQL.

The pg_upgrade utility is used to upgrade a PostgreSQL database cluster to a new major version without requiring a full dump and restore. It simplifies the upgrade process.
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Ques 8

How do you perform database replication in PostgreSQL?

PostgreSQL supports various replication methods, including streaming replication and logical replication. Streaming replication is a physical replication method, while logical replication replicates changes at the SQL level.
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Ques 9

Explain the concept of table partitioning in PostgreSQL and its benefits.

Table partitioning involves dividing a large table into smaller, more manageable pieces called partitions. It can improve query performance, simplify data management, and enhance maintenance operations.
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