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Plz help Interview questions related to joins and triggers in database testing

Hi all,

 

Can someone helpout what kind of questions will be asked in interview regarding Joions and triggers?

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Hi,

1. About join & What type of joins ?Explain with example?

2. What is difference b/w Join and Union?

Please find attached document of Joins , it will be helpful for you.

Hitesh

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thanku hitesh.

It would be more helpful for me if you are able to provide details about triggers too.

Hi,

A trigger is a pl/sql block structure which is fired when a DML statements like Insert, Delete, Update is executed on a database table. A trigger is triggered automatically when an associated DML statement is executed. for example you can search any SQL website.

Hitesh

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