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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Best way to store large amounts of time series data? Relational database (SQL) or NoSQL route. Also additional python/pandas question inside

so I'm working on a project and I'm sort of stuck as to how to store my data. I have a concept I want to propose but am unsure whether it is possible, if it is not I would appreciate any help ...
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1 vote
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Deal with huge amount of data

I'm writing to get advices about my project. I want to make recommander system for shop with some products. In fact i want to recommand to shop A to take item X because shop B sell this item and ...
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1 vote
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Are there decisive leaders in programming with tabular data?

What are the most effective bread-and-butter in-memory open source tabular data frameworks today? I have been working with tabular data for years with an in-house solution that integrates with Excel ...
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3 votes
1 answer
1k views

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 of ...
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1 vote
1 answer
592 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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4 votes
2 answers
137 views

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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3 votes
1 answer
314 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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-2 votes
1 answer
844 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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2 votes
1 answer
300 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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4 votes
1 answer
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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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6 votes
2 answers
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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1 answer
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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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5 votes
1 answer
169 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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21 votes
3 answers
8k views

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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10 votes
1 answer
987 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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1 vote
2 answers
747 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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13 votes
1 answer
244 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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6 votes
1 answer
577 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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10 votes
2 answers
1k 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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15 votes
2 answers
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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17 votes
6 answers
405 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 ...
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