What is a JOIN in SQL? A JOIN clause is used to combine rows from two or more tables, based on a related column between
Category: SQL Server
SQL Interview Questions – Part-3
What is a primary key? A primary key is a unique column (or set of columns) in a relational database table that is used to
SQL Interview Questions – Part-2
What is Savepoint in SQL? By designating a point inside a transaction that may be “rolled back to” without impacting any work done in the
SQL Interview Questions – Part-1
What does the business rule in the context of a database? A business rule is a declaration that places restrictions on a certain feature of
NOT NULL in SQL Server
In a relational database, a null value is used when a column’s value is absent or ambiguous. A null is not a zero value or
Removing VIEW in SQL Server
Using a query, a view creates a virtual table whose contents are known. In other terms, a view is a hypothetical table built from a
Big Data & SQL 