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Can we execute any simple program without installing any Operating system?
I think no,can u suggest?
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What are the privileges that can be granted on a table by a user to others?
Insert, update, delete, select, references, index, execute, alter, all
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What operator tests column for the absence of data?
IS NULL operator
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Which is the subset of SQL commands used to manipulate Oracle Database structures, including tables?
Data Definition Language (DDL)
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How you will avoid your query from using indexes?
SELECT * FROM empWhere emp_no+' '=12345;i.e you have to concatenate the column name with space within codes in the where condition.SELECT /*+ FULL(a) */ ename, emp_no from empwhere emp_no=1234;i.e using HINTS
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