What are the restrictions on external table columns?
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In the oracle version 9.3.0.5.0, what does each number shows?
Please explain me all types of Data models. Also give me the details if each model can have other name.for example:schematic data model is also known as conceptual data model and entity relation data model.
how to get second highest sal of emp table
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
how to select alphabets in a one column , for this the table name is PA_TASKS and column name is TASK_NUMBER, In TASK_NUMBER the data like this 1.1.3NN,1.1.4NN,1.5.1NN,1.3.2NE,1.5NN,1NN,1.2NE,1CE , For this i need to disply output as only NN,but not other alphabets, if NN is thre means i should display , otherwise leave that blank or empty Its some urgent requirement ,thanks in advance
What are the advantages of oracle 12c?
What is an oracle database table?
how many types of index?
Why do you use stored procedures and state some of its disadvantages?
What is the difference between a hot backup and a cold backup in oracle?
Explain the use of grant option in exp command.
WHEN CURSOR MOVES FROM ONE FORM TO ANOTHER FORM, HOW MANY TRIGGER WILL BE FIRED AND WHAT ARE THEIR SEQUENCE?