It may looks a naive question but I am wondering about the relationship between primary keys and indexes in most common SQL databases.
I have a table with a potential of up to 5.000.000 rows. One of the columns in this table is used alone in queries, but there is only 5 possible values of this c开发者_运维问答olumn, and currently I g
Our product takes tests of some 350 candidates at the same time. At the end of the test, results for each candidate are moved to a datawarehouse full of indexes on it. For each test there\'s some 400
I am using Lucene .NEt to do full-t开发者_开发知识库ext searching.Till now I have been indexing PDF docs, but now I have a few webpages that I need to index.What\'s the best/easiest way to index HTML
I\'d like to create an index on a view I have but I need to make sure the data can sti开发者_如何学JAVAll be read while the index is being created.I was reading an article that suggested that when cre
I have a table that stores \"records\" and already has primary key. Table A ======= id (INT) PK auto_increments
We are bu开发者_运维百科ilding a jobsite application in which we will store resumes of all the candidates, which is planned to store on file system.
When we declare a parameter as ICollection and instantiated the object as List, why we can\'t retrive the indexes?i.e.
Is there going to be much benefit in indexing a boolean field in开发者_如何学编程 a database table?
If I have an table create table sv ( id integer, data text ) and an index: create index myindex_idx on sv (id,text)
加载中,请稍侯......