In SQL Server, the CAST function converts an expression from one datatype to another datatype.
In SQL, GUID is a 16 byte binary SQL Server data type that is globally unique across tables, databases, and servers.
database normalization is the process of organizing data to minimize data redundancy (data duplication) which leads to data inconsistency
The SELECT INTO statement in SQL server, selects the data from one table and inserts it into a new table.
A function is a set of SQL statements that perform a specific task. Functions faster code reusability.