Questions tagged [nosql]
NoSQL (sometimes expanded to "not only sql") is a broad class of database management systems that differ from the classic model of the relational database management system (rdbms) in some significant ways.
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Inserting performance on a Graph Database
In the book "Nosql Distilled" by Fowler, in the section about the comparison between relational model and graph model, it's said that the problem with graph databases is the poor performance on ...
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Relational Model Vs Aggregate-oriented Model
Can you explain to me why the relational model is not good to deal with aggregates?
At the contrary, in which cases we can prefer a relational model to an aggregate-oriented model ?
Thanks
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Matching resumes with jobs in a NoSQL database
I have a series of user resumes and would like to find the best matching jobs per resume, the task seems simple at first except I have a nosql db holding the jobs (1m+), my initial idea was to add a ...
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1answer
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Is there an overview over recommender system architectures?
I want to learn more about the recommender system topic.
I am very interested in the usage of different database systems for this use case.
My problem is that I cannot find a good overview over ...
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1answer
384 views
Running SQL-like queries over large schemaless JSON dataset in the cloud?
I've got about 5 million JSON files, about 50GB in total. They do not have a consistent schema (they're broadly the same format, but some have extra extension fields, some have missing fields, etc - ...
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2answers
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Seeking advice on database architecture — given my problem, what tools should I learn?
I'm a fairly experienced R user, but until now I haven't had a good reason to learn to use databases. Now I have a problem where I am dealing with model output that I need to save to disk, and then ...
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1answer
276 views
Data representation (NoSQL database?) for a medical study
Problem description
I have a data set about 10000 patients in a study. For each patient, I have a list of various measurements. Some information is scalar data (e.g. age), some information is time ...
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1answer
681 views
Any Master Thesis Topics related to NoSQL and Machine Learning or Business Intelligence? [closed]
Im currently in the last year, and I want to do a masters thesis on a topic that has NOSQL and Machine Learning or Business Intelligence. In my topic i want for defintely NOSQL, so I want to add a ...
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1answer
252 views
NoSQL vs SQL backend for semi structured data
I have a corpus of job descriptions and another corpus of CVs of applicants. I plan to implement a matching system using machine learning algorithms, to find top 5 or top 10 applicants for each job ...
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1answer
86 views
Data store for testing data products?
Is there a recommended approach for storing processed data for testing new data products?
Basically, I'd like to have a system where a data scientist or an analyst could think of a new data product ...
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2answers
3k views
Python interface to Titan Database
How can I connect to Titan database from Python ?
What I understand is that Titan (Graph database) provides an interface (Blueprint) to Cassandra (Column Store) and
bulb is a python interface to ...
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1answer
1k views
Can hadoop with Spark be configured with 1GB RAM
I'm trying to set up a cluster (1 namenode, 1 datanode) on AWS.
I'm using free one year trial period of AWS, but the challenge is, instance is created with 1GB of RAM.
As I'm a student, I cannot ...
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1answer
160 views
is this a good case for NOSQL?
I'm currently facing a project that I could solve with a relational database in a relatively painful way. Having heard so much about NOSQL, I'm wondering if there is not a more appropriate way of ...
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3answers
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Uses of NoSQL database in data science
How can NoSQL databases like MongoDB be used for data analysis? What are the features in them that can make data analysis faster and powerful?
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1answer
772 views
What is the most efficient data indexing technique
As we all know, there are some data indexing techniques, using by well-known indexing apps, like Lucene (for java) or Lucene.NET (for .NET), MurMurHash, B+Tree etc. For a No-Sql / Object Oriented ...
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2answers
487 views
How to learn noSQL databases and how to know when SQL or noSQL is better [closed]
I want learn about NoSQL and when is better to use SQL or NoSQL. I know that this question depends on the case, but I'm asking for a good documentation on NoSQL, and some explanation of when is better ...
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1answer
187 views
When a relational database has better performance than a no relational
When a relational database, like MySQL, has better performance than a no relational, like MongoDB?
I saw a question on Quora other day, about why Quora still uses MySQL as their backend, and that ...
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1answer
510 views
What is the Best NoSQL backend for a mobile game
What is the best noSQL backend to use for a mobile game? Users can make a lot of servers requests, it needs also to retrieve users' historical records (like app purchasing) and analytics of usage ...
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2answers
725 views
Is this Neo4j comparison to RDBMS execution time correct?
Background: Following is from the book Graph Databases, which covers a performance test mentioned in the book Neo4j in Action:
Relationships in a graph naturally form paths. Querying, or
...
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2answers
3k views
What is the difference between Hadoop and noSQL
I heard about many tools / frameworks for helping people to process their data (big data environment).
One is called Hadoop and the other is the noSQL concept. What is the difference in point of ...
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5answers
348 views
The data in our relational DBMS is getting big, is it the time to move to NoSQL?
We created a social network application for eLearning purposes. It's an experimental project that we are researching on in our lab. It has been used in some case studies for a while and the data in ...
