What is a private synonym?
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What do you understand by database schema and what does it hold?
What is the difference between primary key and unique key and foreign key in oracle?
structural difference between bitmap and btree index ?
What are the original export and import utilities?
List the parts of a database trigger.
What is oracle server autotrace in oracle?
how to find the second highest salary in a given table????
What is key preserved table?
1. How actually index will work ? 2. Why do people prefer mostly bitmap index and btree index in datawarehouse ? 3. If I use the column in aggrigate functions like max,min,count and avg and if I have a index created on that column, will it increases the performance ?
What is pragma autonomous transaction in oracle?
select to_char('10','10') from dual This gives me an error oRA-1481 INVALID NUMBER FORMAT MODEL why? pls help
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 ?