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21-Sep-2019 20:55

The Oracle basics section teaches you about how to use SQL to interact with the Oracle database.

You will learn various techniques to query data from the database and how to manage database tables such as creating, modifying, and deleting tables.

You will be given questions that you need to solve.

After each exercise, we provide the solution so you can check your answer.

The virtual table means that a view only behaves like a table but does not actually contain any data.In this section, you will learn about the Oracle Database and how to install Oracle Database Server.In addition, you will learn how to create a sample database and how to connect to it for practicing.This book includes scripts and tools to hypercharge Oracle 11g performance and you can buy it for 30% off directly from the publisher.

UPDATE dest_tab tt SET (tt.code, tt.description) = (SELECT st.code, st.description FROM source_tab st WHERE = tt.id) WHERE EXISTS (SELECT 1 FROM source_tab WHERE id = tt.id); 5000 rows updated.

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