Why cross join is used?

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Write one update command to update seqno field of a table on the basis of row number.

4 Answers   HCL,

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what is explain plan?

4 Answers  

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If a cursor is open, how can we find in a pl/sql block?

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Is a secondary key the same as a foreign key?

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Is left join inner or outer by default?

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What is left join example?

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Why join is faster than subquery?

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What is the difference between UNIQUE CONSTRAINT and PRIMARY KEY? 1. There is no difference. 2. A PRIMARY KEY cannot be declared on multiple columns. 3. A UNIQUE CONSTRAINT cannot be declared on multiple columns. 4. A table can have multiple PRIMARY KEYS but only one UNIQUE CONSTRAINT. 5. A table can have multiple UNIQUE CONSTRAINTs but only one PRIMARY KEY.

7 Answers   Satyam,

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what are the authentication modes in sql server? : Sql dba

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I have done oracle 10g. I need a project knowledge. So if u please send a project how it should be done,Or you can send email link. I will be very grateful to u.

1 Answers  

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What is mdb stand for?

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