2. Demystifying Database Languages: A Comparison of SQL, PL-SQL, and T-SQL
   SQL (Structured Query Language): This is the foundation for all three. It's a standardized language used to communicate with relational databases
3. Unlocking the Power of ||: The String Concatenation Operator in Oracle
   Concatenating variables:This code snippet declares two variables, first_name and last_name, and assigns values to them. Then