Answer Posted / rathi.sql
select * from employees
where rownum<=4
| Is This Answer Correct ? | 24 Yes | 3 No |
Post New Answer View All Answers
How different is ms access and oracle?
What are the different types of partitions in oracle?
How to select some columns from a table in oracle?
How index is implemented in oracle database?
What is sharded cluster?
What are operators in oracle?
How remove data files before opening a database?
How to put more than 1000 values into an oracle in clause?
What is connection pooling in oracle?
How can we find out the current date and time in oracle?
i have a question here... As of my knowledge, when we apply an index (b-tree)on a column, internally it arranges the data in b-tree format and do the fetching process correspondingly... and my quetion is... How a bit-map index arranges the data internally when applied on a column?IS it in b-tree format or whatelse?
What do you understand by database schema and what does it hold?
How to delete all rows a table in oracle?
Can a formula column referred to columns in higher group ?
How to estimate disk space needed for an export job?