SQL Server Isolation Level helps in concurrency & transaction management by preventing concurrency problems . In an environment where we have multiple users modifying and accessing the same information , it is essential that they all can work at the same time without any delays. They all should be able to read correct data and …
SQL Subquery is another tool SQL Server has which can be used to fetch data from other tables to be used in main query according to the needs. Inner query and nested query are other names of SQL Subquery. SQL Subquery can be used with the SELECT, INSERT, UPDATE, and DELETE statements along with the operators …
Sample Student Database SQL which will be used in our SQL Training articles. Before we start with Joins , Constraints , View , Stored Procedures & Functions , we need a Sample Database for practice . I looked around and found this sample. I have simply downloaded it from MSDN site and you can either …