What is the difference between substr and instr?

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How can we find the size of a database?

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Differentiate between TRUNCATE and DELETE?

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> CREATE OR REPLACE FUNCTION FACTORIAL_1(factstr varchar2 ) 2 RETURN NUMBER AS 3 new_str VARCHAR2(4000) := factstr||'*' ; 4 fact number := 1 ; 5 BEGIN 6 7 WHILE new_str IS NOT NULL 8 LOOP 9 fact := fact * TO_NUMBER(SUBSTR(new_str,1,INSTR(new_str,'*')-1)); 10 new_str := substr( new_str,INSTR(new_str,'*')+1); 11 END LOOP; 12 13 RETURN fact; 14 15 END; explanation Above program?

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Which Database is the best for the Security issue ? 1. DB2 2.SQL Server 3.MySQL 4.ORACLE

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Respected sir, Please send me technical questions related to oracle apps..

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what happened to the global index when I truncate the data in one of the partition?

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What happens in oracle commit?

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List out the difference between commit, rollback, and savepoint?

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How to define an oracle sub procedure?

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What is the difference between normal and corelated subqueries?

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What are a cluster and non-cluster index?

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