3 янв. 2022 г. · Other example is if you want to keep indexes compact. Having a composite key weighing 500 bytes per entry is significantly fatter than using ...

28 нояб. 2020 г. · A composite key is useful when you want a logical breakdown of the relationship visible to someone working on the code. An abstracted primary ...

21 окт. 2021 г. · A composite key works for combinations of things that when paired would give you a unique record. One that I remember from my databases class ...

4 мар. 2024 г. · It's my understanding that when a table is referenced by another table, it's preferable to create a unique identifier and therefore use a unique constraint ...

11 апр. 2012 г. · I use composite keys in SQL Server for many-to-many tables that are composed of two ints that are foreign keys.

17 февр. 2024 г. · Then you need a composite key for uniqueness. Someone mentioned how business may add more cols and that you will need to rebuild the composite.

12 мая 2024 г. · So from my understanding the primary key would have to be a composite of all three columns. In such a case, do I even need it? Being a ...

14 янв. 2018 г. · I love using compound primary keys. They often allow me to completely bypass joins on intermediate tables. They also act as a unique index, ...

13 июн. 2017 г. · The argument is that using composite keys are faster and given enough time NOT using composite will cause performance problems.

29 нояб. 2021 г. · I am studying on composite keys and its usage and I am not entirely sure what the advantages are over or a surrogate key, or a column which is a concatenation ...