MariaDB Questions et reponses d'entretien
Question 16. Explain the concept of ACID properties in database transactions. Why are they important?
ACID stands for Atomicity, Consistency, Isolation, and Durability—the essential properties of a reliable database transaction. These properties ensure that database transactions are executed reliably, without errors or data corruption, even in the event of system failures.
Question 17. What is the purpose of the TokuDB storage engine in MariaDB?
TokuDB is a high-performance storage engine for MariaDB that is optimized for write-intensive workloads. It uses Fractal Tree indexing to provide efficient data compression and improved insert/update performance.
Question 18. Explain the concept of replication in MariaDB. How does it work, and what are its use cases?
Replication in MariaDB involves copying and distributing data from one database server (the master) to one or more other servers (the slaves). It is used for data redundancy, load balancing, and high availability.
Question 19. What is the purpose of the Aria storage engine in MariaDB?
Aria is a storage engine in MariaDB that provides support for non-transactional tables. It is suitable for read-heavy workloads and is often used for temporary or internal tables.
Question 20. Explain the difference between a primary key and a unique key in MariaDB.
Both primary keys and unique keys in MariaDB enforce uniqueness, but a table can have only one primary key, while it can have multiple unique keys. Additionally, the primary key column(s) cannot contain NULL values, while unique key columns can have NULLs.
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