What are the methods of filing?

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Can a foreign key be a duplicate?

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what are the differences between procedure-oriented languages and object-oriented languages? : Sql dba

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4. Select sum(A.salary) +sum(B.salary) as TOT_SAL from ( select LEVEL emp_id,level*100 salary,case when mod (level,2)=0then 2 else null end dept_id from dual connect by level<6 )A right outer join (select level emp_id ,level*200 salary ,case when mod (level,3)=0 then 2 else null end dept_id from dual connect by level<6)B On A.dept_id=B.dept_id And A.emp_id=B.emp-id;

1 Answers   Fintellix,

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What is difference sql and mysql?

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What is difference between stored procedures and application procedures?

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What is pl sql quora?

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what is a scheduled jobs or what is a scheduled tasks? : Sql dba

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Is null operator in sql?

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List out the acid properties and explain?

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How does left join work in sql?

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How many types of triggers exist in pl/sql?

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