Aarti Steels SQL and PL SQL Developer Interview Questions and Answers

Types of joins, constraints, views, and indexes in SQL.

• Types of joins in SQL: Inner Join, Left Join, Right Join, Full Join, Cross Join.

• Types of constraints in SQL: Primary Key, Foreign Key, Unique, Not Null, Check.

• Views in SQL are virtual tables that display data from one or more tables. Types include Simple Views, Complex Views, Materialized Views.

• Indexes in SQL are used to quickly retrieve data from a table. Types in...read more