What is difference between UNIQUE constraint and PRIMARY KEY constraint ?

3 Answers  

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Explain 1st, 2nd, 3rd normalization form of data base

3 Answers   KH, Thermotech,

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What do you understand by a database object?

0 Answers  

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Can we commit inside a function in oracle?

0 Answers  

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26. Display the earliest shipping date in the format: DD/MON/YYYY

5 Answers   Wipro,

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What is an Integrity Constrains ?

3 Answers  

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How to omit columns with default values in insert statement in oracle?

0 Answers  

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SQL> CREATE TABLE to_table 2 (col1 NUMBER); Table created. SQL> CREATE OR REPLACE TRIGGER statement_trigger 2 AFTER INSERT ON to_table 3 BEGIN 4 DBMS_OUTPUT.PUT_LINE('After Insert Statement Level'); 5 END; 6 / Trigger created. SQL> CREATE OR REPLACE TRIGGER row_trigger 2 AFTER INSERT ON to_table 3 FOR EACH ROW 4 BEGIN 5 DBMS_OUTPUT.PUT_LINE('After Insert Row Level'); 6 END; 7 / Trigger created. SQL> INSERT INTO TO_TABLE VALUES(1); After Insert Row Level After Insert Statement Level 1 row created. SQL> BEGIN 2 INSERT INTO TO_TABLE VALUES(2); 3 INSERT INTO TO_TABLE VALUES(3); 4 INSERT INTO TO_TABLE VALUES(4); 5 INSERT INTO TO_TABLE VALUES(5); 6 INSERT INTO TO_TABLE VALUES(6); 7 INSERT INTO TO_TABLE VALUES(7); 8 INSERT INTO TO_TABLE VALUES(8); 9 INSERT INTO TO_TABLE VALUES(9); 10 INSERT INTO TO_TABLE VALUES(0); 11 END; 12 / WAT LL BE THE O/P??? XPLAIN IT>>>>

1 Answers   Infosys,

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I creat Credit memo in AR. Now i want revers the Credit Memo.how you can revers that what out any aditional entry.

0 Answers   GTL,

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How to load data from external tables to regular tables?

0 Answers  

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What are the sql clauses supported in the link property sheet ?

1 Answers   Oracle,

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How remove data files before opening a database?

0 Answers  

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