What is the difference between column level constraints and table level constraints?

14 Answers   IBM, TCS,

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What is Water Mark in Oracle?

7 Answers   Oracle,

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The table has 3 columns 4 rows. The output is which column has least null values( A COL SHOULD BE THE OUTPUT) Write the query plz. A B C ---------- 1 NULL 7 2 4 NULL NULL 5 NULL 3 NULL NULL

1 Answers   TCS,

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What is the difference between sharding and replication?

0 Answers  

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How to define and use table alias names in oracle?

0 Answers  

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You create a private database link and upon connection, fails with: ORA-2085: connects to . What is the problem? How would you go about resolving this error?

1 Answers  

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SELECT * FROM (SELECT TITLE FROM MOVIE ORDER BY RANK DESC) WHERE ROWNUM > 4; when i run the above query .it produces output as NO ROWS SELECTED.why ?plz any one help me

6 Answers   TCS,

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select * from emp what happened internally when we write this query in the sql prompt?

5 Answers  

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How to generate query output in html format?

0 Answers  

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Hello All, Could any one provide me FAQs/interview questions on oracle PL/SQL

1 Answers  

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What is the effect of setting the 'RULE' for OPTIMIER_GOAL parameter of the ALTER SESSION Command ?

1 Answers  

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what is foreign key?

5 Answers  

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