What is an oracle function?
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Hi how Can I Add A Foreign key that references a table that has composit primary key ? example i had costumer table that has C_Id and SSN Both as PK and another table has C_Id that must refernece C_Id in Customers i done the usual way and got oracle error message about uniqeness any ideas plz
write a query that displays every Friday in a year with date?
Why required to run root.sh at the time of installation and what exactly it will do
1) What is ONE_SIZE_FITS_ALL approach? 2) Explain the Common & Variable Header of DATA FILE? 3) What are the Drawbacks to using OMF DB? and the Advantages? 4) List out the Advantages of Undo T.spaces over the Undo SEGMENT? 5) Difference between the Temporary tablespace with TEMPFILE and the Tablespace with TEMPORARY Keyword? 6) What are the situation extents are freeing for reuse.
what is the difference between no rows returned and null returned?
What is a system tablespace?
How to view the data files in the current database?
Will you be able to store pictures in the database?
What is a package in oracle?
How do you recover a datafile that has not been physically been backed up since its creation and has been deleted. Provide syntax example.
How to export data with a field delimiter?
What does ROLLBACK do ?
Oracle General 
