What is an Oracle index?
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What types of joins are used in writing subqueries?
what are indexes..how many types of index's are there and what are they?
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Explain about achiever in sql?
What is the difference between PFILE and SPFILE in Oracle?
What is the difference between pre-select and pre-query?
what is Single Byte Overhead...?
A table t is there.If you perform insert ,update and delete then the trigger will fire.What is the minimum no of trigger required for a table.
How many types of tables supported by oracle?
How to remove a row in a database table?
What is an oracle wallet?
Which environment variables are absolutely critical in order to run the OUI?
can anyone help me ? an index has been done on the primary key of a table. an update operation was performed on that table. now my question is 1> what abt the performance ? means faster or slower due to indexing ? 2> does the operation affect to the primary key constraint ?