What is data type in oracle?
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How many data types are supported?
What are the differences between date and timestamp in oracle?
What is a system tablespace and when it is created?
What is raw datatype?
what is difference between foreign key and reference key
How to change user password in oracle?
what are the different types of cursors? explain?
What are the factors that affect OPTIMIZER in choosing an Optimization approach ?
When do you get a .pll extension in oracle?
State the difference between a primary key and foreign key?
What are the different type of Segments ?
If I have a select statment which retrives 2 rows, & that rows have the same data in all the fields except the last field and I want to merge the 2 rows to be in 1 row with concatenating the last field which have the different data.... eg: the 1st row has these fields: A-B-C the second row has: A-B-X ........ i want to merge the two row to be in one row like ----> A- B- C,X