The present article deals with one of the bottlenecks in the work of database developers and administrators, namely the occurrence of invalid objects and...
In the previous articles, we studied the basic rules of SQL database design, created a database schema diagram for a recruitment service, and filled...
Systems often work with distributed databases that contain distributed tables. Distribution is supported by various mechanisms, including replication. In this case, it is...
To start, let's give definitions and highlight the difference between PIVOT and UNPIVOT operators in SQL Server.
The PIVOT and UNPIVOT relational operators are used...