SQL Question Answer Clustered vs Nonclustered Indexes in SQL The difference between Clustered and Nonclustered indexin a relational database is one of the most popular SQL interview questions almost as popular as theprimary key vs unique key, thedifference between truncate and delete, andcorrelated ...
They are also used to link two tables when you are joining them. Btw, there is a slight difference in unique key and unique key constraint, former is a concept while the latter is an implementation that ensures that no duplicate key is inserted into your tables. Btw, If you are new to...