Sencio Softcon Application Support Engineer Interview Questions and Answers

Oracle SQL is a programming language used to manage and manipulate data in Oracle databases.

• Oracle SQL is a variant of SQL specifically designed for use with Oracle databases.

• It allows users to query, insert, update, and delete data in Oracle databases.

• Oracle SQL includes advanced features such as analytic functions, hierarchical queries, and PL/SQL support.

Joins are used to combine rows from two or more tables based on a related column between them.

• Types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN.

• INNER JOIN returns rows when there is at least one match in both tables.

• LEFT JOIN returns all rows from the left table and the matched rows from the right table.

• RIGHT JOIN returns all rows from the right table and the matched rows from the left table.

• FULL ...read more

Tables store data in a structured format, while views are virtual tables that display data from one or more tables.

• Tables store actual data, while views display data dynamically based on a query

• Tables can have indexes and constraints, while views cannot

• Changes to tables affect the underlying data, while changes to views do not affect the underlying data

• Views can be used to simplify complex queries by predefining joins