| Oracle FAQ | Your Portal to the Oracle Knowledge Grid | |
 |
 | |||
| Oracle FAQ | Your Portal to the Oracle Knowledge Grid | |
|
| |||
Home -> Community -> Usenet -> comp.databases.theory -> Re: cover index
In article <388f2616_at_bronze.hkabc.net>,
"Frankie Kong" <frankiek_at_hkabc.net> wrote:
> what is cover index
>
>
If the key of an index contain all the attributes mentioned in a query, then the index is a cover index for this query. For instance, a index on <age, name> is a cover index for query " return the names of the people older than 20"
Sent via Deja.com http://www.deja.com/
Before you buy.
Received on Wed Jan 26 2000 - 00:00:00 CST
 |
 |