Database developers often disagree about whether it’s better to use naturally occurring data or meaningless values as a table’s primary key. Technically, there is no right or wrong to this ...

When working on a multidimensional design, every fact table within scope should be handled with care. In an ideal world, each low-level fact table represents the metrics related to a business event.

This, or these, attribute(s) are the candidate key(s) for the structure. The candidate key is also known as the primary key, or if a structure has multiple candidate keys, then one of them is ...

The best way to protect your entire database, not just your primary key values, is to back it up regularly. Natural data isn’t any more dependable than a system-generated value. 10: ...

This formal Id column will not end up as a primary key in the same way you might think of a primary key in mainstream SQL database engines. In Microsoft SQL Server, for example, a primary key usually ...

In this post, I will discuss another important technique, deduplication, that can be used to replace transactions for eventually consistent use cases with defined primary keys. Time series ...

All documents in a MongoDB collection have a primary key dubbed _id . ... Databases Generative AI Oracle Database. video. Python 3.14 Changes Type Hints Forever: Lazy Annotations Explained. Jun 12 ...

MySQL table primary keys and unique indexes prevent multiple rows with the same index from being added to the table. If you try to insert a duplicate row with a standard INSERT statement, you will ...