Can we use more than one null value for unique key?

31 Answers   A1 Technology, Wipro,

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Explain the methods used to protect source code of pl/sql.

0 Answers  

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How to display the contents of a current record fetched in a reference cursor?

2 Answers  

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What is attribute indicator in pl sql?

0 Answers  

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what are the tunnig tables you used for tuning a query and tell me some of coloumns in that tuning tables?

1 Answers   Metric Stream,

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how to find the First and Last Observation from the table: Ex: OBS Name Sal Ans like: OBS Name Sal 105 E 5000--> 105 E 5000 102 B 2000 104 D 4000 103 C 3000 101 A 1000--> 104 D 4000

4 Answers  

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How to copy a table in another table with datas?

9 Answers  

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four procedures is are there should i write their in a package

2 Answers  

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What is a procedure in pl sql?

0 Answers  

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I have one table and column is c1 pk, c2 not null,c3 not null and 200 row in it and i add c4 column and value, how can is possible

9 Answers  

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can a stored procedure call itself or recursive stored procedure? : Sql dba

0 Answers  

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Why do we use sql constraints? Which constraints we can use while creating database in sql?

0 Answers  

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