Content here covers database systems, administration, performance tuning, backup and recovery, replication, migration, and high availability across on-premises and cloud environments. It also includes automation, monitoring, access control, and security guidance for protecting relational, NoSQL, and distributed databases.
Article
SQL injection in Oracle is rarely stopped by one control alone. Bind variables reduce query manipulation, and least privilege limits the blast radius if an input path is …
Article
Learn how to assess Oracle Database vulnerability exposure, prioritize CVEs by real operational risk, and validate remediation before production changes.
Article
NoSQL query speed often depends more on index design than hardware. This article explains how to choose index types, validate query plans, and avoid common trade-offs that slow …
Tutorial
Slow joins usually come from poor indexing, mismatched join conditions, or execution plans that scan far more data than necessary. This tutorial shows how to diagnose the bottleneck, …
Article
NoSQL query performance is often limited less by hardware than by how indexes are designed, validated, and maintained. This article explains how to optimize NoSQL indexes for high-performance …
How-To Guide
Use Extended Events to capture SQL Server login failures with a low-overhead session, verify the evidence, and cleanly remove the audit when you are done.
Tutorial
Learn how to design, implement, validate, and operate PostgreSQL role-based access control using roles, grants, group roles, and safe privilege management.
Article
PostgreSQL index bloat reduces cache efficiency, increases I/O, and can make queries slower even when the execution plan looks correct. This article explains how to detect it, validate …
Article
SQL Server DMVs give you a low-overhead way to identify expensive queries, quantify their impact, and validate whether performance problems are transient or persistent. This article shows how …