Navicat Blog

Ask any experienced DBA what single change most reliably improves query performance, and the answer is almost always the same: better indexing. Yet indexes are also one of the most misunderstood tools in the database developer's arsenal. Many developers add them reactively, remove them hesitantly, and choose the wrong type simply because they are not sure what the alternatives are. This guide walks through the most important index types - B-tree, hash, partial, and composite - explains when each one earns its place, and shows how Navicat's Table Designer simplifies both the creation and management of indexes.

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If you have ever tried to speed up a slow query, someone has probably told you to “just check the execution plan.” Sound advice, but if you have never read one before, the output can look like an alien language. This article breaks down what execution plans are, how to make sense of them, and how modern tooling can take much of the pain out of the process.

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In a world where data drives decisions at every level of an organization, knowing where your data came from and how it has changed over time is no longer a luxury - it's a necessity. Yet many database teams still operate without any formal approach to data lineage or traceability, leaving them exposed to compliance risk, debugging nightmares, and a general lack of trust in the data itself. This article explores what data lineage and traceability actually mean, why they matter, and how to build them into your database practice.

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One of the most enduring debates in software architecture is deceptively simple to state but genuinely difficult to resolve: when you have a business rule to enforce, should it live in the database as a stored procedure, or in your application code? The answer shapes how your system is tested, maintained, scaled, and evolved. As we'll see in today's blog entry, it's a question that's worth thinking through carefully.

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