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Technical Articles

Database

How do you design indexes to optimize query performance?

The article discusses strategies for designing indexes to optimize database query performance, including understanding query patterns, choosing appropriate index types, and balancing index usage.

Mar 31, 2025 am 10:47 AM

How do you choose appropriate data types for your columns?

Article discusses choosing appropriate data types for database columns to optimize performance, storage, and functionality. Main issue is the importance of correct data type selection for efficient database design.

Mar 31, 2025 am 10:46 AM

What is denormalization? When is it appropriate to denormalize a database?

Denormalization enhances database query performance by adding redundant data, but it risks data integrity and consistency. It's recommended for read-heavy and real-time applications.

Mar 31, 2025 am 10:45 AM

What are the drawbacks of over-normalization?

Over-normalization in databases increases complexity, degrades performance, risks data integrity, and hinders scalability, making design and maintenance challenging.

Mar 31, 2025 am 10:44 AM

What are the benefits of database normalization?

The article discusses the benefits and drawbacks of database normalization, focusing on data integrity, performance, and maintenance. Over-normalization can lead to query complexity and performance issues.

Mar 31, 2025 am 10:43 AM

Explain the different database normalization forms (1NF, 2NF, 3NF, BCNF).

Article discusses database normalization forms (1NF, 2NF, 3NF, BCNF) to reduce redundancy and improve data integrity. Main issue: balancing normalization benefits with performance impacts.

Mar 27, 2025 pm 06:11 PM

What is deadlock? How can you detect and prevent deadlocks in MySQL?

The article discusses deadlocks in MySQL, detailing their detection, prevention, causes, and resolution. Main issues include lock contention and long-running transactions. Strategies to minimize deadlocks involve consistent lock ordering and short tr

Mar 27, 2025 pm 06:10 PM

How does InnoDB handle locking?

InnoDB uses row-level locking, shared/exclusive locks, and intention locks to manage concurrent data access, enhancing performance and consistency in MySQL databases.

Mar 27, 2025 pm 06:09 PM

Explain the different types of locks in MySQL (e.g., shared locks, exclusive locks, row-level locks, table-level locks).

The article discusses MySQL lock types: shared, exclusive, row-level, and table-level locks. It explains how shared locks enhance concurrent transaction performance, while exclusive locks may reduce concurrency and cause issues like deadlocks. Row-le

Mar 27, 2025 pm 06:08 PM

How do transaction isolation levels prevent these concurrency issues?

Article discusses transaction isolation levels in databases, focusing on preventing concurrency issues like dirty reads, non-repeatable reads, and phantom reads. It explains different isolation levels and their impact on concurrency and performance,

Mar 27, 2025 pm 06:05 PM

Explain the concepts of read committed, repeatable read, and serializable isolation levels.

Article discusses read committed, repeatable read, and serializable isolation levels in databases, focusing on their impact on concurrency and data consistency.

Mar 27, 2025 pm 06:03 PM

What are the different transaction isolation levels in MySQL? How do they affect concurrency?

The article discusses MySQL's four transaction isolation levels: READ UNCOMMITTED, READ COMMITTED, REPEATABLE READ, and SERIALIZABLE, and their impact on concurrency and performance. It provides guidance on configuring and optimizing these levels for

Mar 27, 2025 pm 06:02 PM

Explain the ACID properties of database transactions (Atomicity, Consistency, Isolation, Durability).

The article discusses the ACID properties (Atomicity, Consistency, Isolation, Durability) essential for reliable database transactions, ensuring data integrity and consistency.

Mar 27, 2025 pm 06:01 PM

What are some disaster recovery strategies for MySQL?

The article discusses disaster recovery strategies for MySQL, focusing on regular backups, replication, point-in-time recovery, geographic redundancy, automated failover, testing, and data archiving to ensure data integrity and availability.

Mar 27, 2025 pm 06:00 PM