All Questions
13
questions
1
vote
1
answer
267
views
How can I find matching elements in an array using CouchDB's Mango selector?
How can I find selected only elements included value during array elements using CouchDB's Mango API?
I tried $elemMatch, but I didn't get the result I wanted
Document
{
"id": &...
- 29
0
votes
1
answer
243
views
How to write a view in CouchDB to represent "not in" or "group by having count(*) = 1"?
Using relational db as an example, given two tables like below, where when rows in tableA and tableB have the same values, they represent the same "thing" but in different "state". So for ID=1, this ...
- 13.2k
0
votes
0
answers
563
views
Migration guide to move from SQL to CouchDB
My question: Would you have some web pages (or tutorial) to point me to, that would focus on migrating guide from SQL to NoSQL, especially for 1-N relationship modelling?
A bit more on my needs:
I ...
- 542
1
vote
1
answer
509
views
Relational data and NoSQL Use Case
I am looking at building a system which allows people to input times that represent when they were working.
The database will store organisations which has users and projects.
Organisations
...
- 2,897
0
votes
1
answer
223
views
Are TABLES to RDBMS what DOCUMENTS are to NoSQL?
i'm sorry to ask this question as i'm sure this has been asked before on here but i cant seem to find an SO question that clears this for me. If i'm coming from an RDBMS background, how can i easily ...
- 912
0
votes
1
answer
1k
views
Aggregate functions, Lack of Types, Entropy in Query problems on NoSQL DBs
While we believe that NoSQL Databases have come to fill a number of gaps which are challenging on the side of RDBMS, i have had several challenges over time with NoSQL DBs in the area of their query ...
- 7,806
2
votes
1
answer
477
views
MongoDB Schema Design, Coalesce, Merging user-specific fields with default fields
Given:
A database of objects that each have a default weighting for search order (perhaps a universal popularity rating).
As each user uses those objects, the user's personal weighting for search ...
- 21
14
votes
1
answer
8k
views
How to translate from SQL to NoSQL/MapReduce?
I have a background working with relational databases but recently started to dabble in CouchDB and was surprised by how some non-relational operations, which would be simple in SQL, were not first-...
- 1,805
6
votes
4
answers
5k
views
NoSQL DataBases [closed]
For last several years I have noticed that interest to NoSQL DBs is increasing.
A lot of new such DBs are released :
MongoDB
CouchDB
Memcachedb
memcached
Velocity
Cassandra
Tokyo Cabinet
etc..
What ...
- 2,093
1
vote
1
answer
740
views
MongoDB or CouchDB or something else?
I know this is another question on this topic but I am a complete beginner in the NoSQL world so I would love some advice. People at SO told me MySQL might be a bad idea for this dataset so I'm asking ...
- 116k
25
votes
2
answers
6k
views
What are the best uses of document stores?
I have been hearing a lot about document oriented data stores like CouchDB. I understand the uses of BigTable like stores such as Cassandra. After reading this question, I was wondering what the ...
- 16.6k
146
votes
8
answers
33k
views
Use cases for NoSQL [closed]
NoSQL has been getting a lot of attention in our industry recently. I'm really interested in what peoples thoughts are on the best use-cases for its use over relational database storage. What should ...
- 18.5k
137
votes
3
answers
133k
views
SQL (MySQL) vs NoSQL (CouchDB) [closed]
I am in the middle of designing a highly-scalable application which must store a lot of data. Just for example it will store lots about users and then things like a lot of their messages, comments etc....