Difference Between Inline and Out-of-Line Constraints
Constraints on tables and columns allow you to enforce the data quality. In SQL, there are two...
Example of Improving Query Performance with Indexes
In this article, we’ll look at how an index can improve the query performance. Indexes in Oracle and other databases are objects that...
5 Ways to Update Data with a Subquery in Oracle SQL
A subquery is a powerful way to find the data you want to use for another query. They are often used in SELECT and UPDATE statements to...
