A catch-all term describing database systems using various non-relational models. Such systems are usually engineered to be high-performance.

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240 views

Terminology No-SQL Database [closed]

I'm looking for a good explanation of terminology for No-SQL. I have some colleagues that won't get the point, and for the sake of advancing i need to have definitions of the names.. Though this seems ...
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1answer
140 views

Line Comment in MongoDB config file

How to mark a line comment in mongodb configuration file? cpu=true #temporary for dev env Is this the right way? There is no clue about it in their website page about setting the configuration ...
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1answer
312 views

Design DB for users with different information fields?

Let's say I want to register all faculty of a university and they are in different fields and have different resume information. Here we have some common fields and some field specific fields. for ...
1
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1answer
970 views

~2 Billion row fact table in star schema on Oracle. Advisable? [closed]

Let me start with: I am not a DBA; I am a backend developer. It has been suggested that, for a report schema, I implement a star schema where-in the fact table can have ~2B rows before being ...
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0answers
78 views

Why NOSql should be more performant than RDBMS under structured data loads?

The main reason NoSQL dbms have become so common is the need of storing unstructured data where a Relational database instead would require carefully designing a database schema and fitting data into ...
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0answers
137 views

Dealing with null values in non-nullable columns in a NoSQL database

If I have an existing table in a NoSQL database cluster and I want to add a new column that should never return null, how do I handle it in my application code? I can update all exist records and ...
0
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1answer
635 views

Accumulo table design methodology

I am just getting started with Accumulo and NoSQL databases and I am looking for some discussion on table design. I get the key value structure that is seen in the manual. However, if I am trying to ...
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0answers
141 views

Can XML columns in Oracle/MS SQL Server replace document oriented databases to some extent?

Just a strategic question: I am currently working with frequently changing data schemas and it takes a lot to keep track of versions and specific content. I do, however, have a classic OLTP ...
4
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2answers
2k views

Sharded key-value store using MongoDB

Would like to set up a key-value store that is sharded across multiple machines. We are currently using MongoDB, is there a reason why we shouldn't use MongoDB for this purpose? We also use Redis, ...
1
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1answer
121 views

Use Database to Store Data Extracted From Internet

I'm mining 500 million users, and their "followers" from a social network using their API. The extraction of data itself is not a problem, since I can do it with my scripts. However having 500 million ...
2
votes
1answer
676 views

What database and setup can handle several million inserts per minute? [closed]

We have come to a point where for a few of our customers' systems, at peak times, events are generated at that crazy rate. That is, millions of new events per minute (between 1M and 2M). The ...
0
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1answer
95 views

Is PostgreSQL appropriate for processing this large but simple dataset? [closed]

I have a dataset I'm not sure how to store. The structure is simple: 30 numeric attributes identified by about 15 billion x, y, and t values. We're expecting ~17k t values and maybe 90k x/y ...
7
votes
1answer
2k views

Full text search through many tables in MySQL

We have high traffic NEWS websites, I want to add a feature that every user can search through over all content of site, such as news, polls, comments, galleries,etc . Each of contents type has its ...
0
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1answer
757 views

difference between MySQL and noSQL databases [duplicate]

All these days I've been using MySQL, recently I saw a kind of similar named Database NoSQL. What is NoSQL and what is the difference between them ?
43
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5answers
79k views

What is a Key/Value store database?

I've been looking at the wikipedia page for NoSQL and it lists several variations on the Key/Value store database, but I can't find any details on what it means by Key/Value store in this context. ...
1
vote
0answers
522 views

Data replication between SQL server 2008 R2 and other NOSQL DB (ML, MongoDB)

I'm a newbie in RDBMs and I have the question regarding replication between SQL Server (Oracle in future) and NOSQL MarkLogic server (ML). There are two servers: Machine with SQL server 2008 R2 ...
3
votes
2answers
267 views

Scalability: Desiging a message table

This question might be deadly simple but I wanted to make sure I am going through the correct path and not making any simple and irrevertible mistakes. My project will be based on messaging and it ...
3
votes
1answer
4k views

If foreign keys/cascade deletes are bad, why use a database-server with that feature?

I noticed wordpress/rails etc do not use foreign keys constraint or cascade deletes features from database. Instead they handle this in PHP/Ruby/scripting level! I have read this and this. Most ...
2
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0answers
368 views

Store large hierarchy in NoSQL each day and compare

I'm in the process of creating a utility that stores a fairly large hierarchy into a NoSQL document. The data of this is similar to an Active Directory / LDAP structure which contains sub groupings, ...
4
votes
4answers
1k views

In Memory Database for high transaction and volume spikes on a website [closed]

I am looking at the IA for a hypothetical application scenario, for example: A high demand application such as an online ticketing website where there can be demand for 100,000 tickets to be ...
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1answer
1k views

Storing dynamic data in NoSQL

I have scenario where I need to store unstructured data but the rest of my data is structured and relational. An example of the type of unstructured data is as explained below: User Type 1: How do ...
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1answer
176 views

Why Hypertable is not supporting joins and Transaction? [closed]

I have read the following topic about hpertable http://hypertable.com/documentation/. Why Hypertable is not supporting joins and Transaction?
2
votes
1answer
430 views

MongoDB: Aggregation workaround by helper collection

Since I regularly run against mongodb's document size limit and also aggregation framework's group limitations >16M, depending on the amount of data I need to process, I look for a simple workaround. ...
1
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1answer
155 views

How would I change this relational model to fit a nosql database?

Because of things beyond my control, I have to switch from a relational database to MongoDB for the advertising platform I'm helping to build. I've got a relational schema sketched out, but I'm unsure ...
12
votes
1answer
3k views

Amount of data per node in Neo4j

I need to store substantial amounts of data per node in Neo4j. The data is Unicode chunks of text. Actually not every node will have big chunks, but many of them will. I waded through the ...
2
votes
1answer
333 views

Switching to NoSQL for native JSON use?

I am rather comfortable writing concrete schemas with explicit primary keys, foreign keys, indexes, views and stored procedures. For queuing I use a NoSQL solution called: Redis. Recently I heard a ...
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2answers
287 views

Can graph databases be easily distributed?

I have never worked with graph databases such as neo4j, I would like to know if they support easily replication and clustered distribution as well as key-values databases, or if there inherent ...
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0answers
147 views

Real Time data collection - Help select Database

My Scenario: I want to collect data from various sensors[for now I have 600 sensors sending data, but this may have to scale up to 3000 more data sensors, all sensors send real time data] Now I have ...
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1answer
124 views

Is it possible to query “NOT IN” in NO SQL?

I asked the same thing about a specific NoSql engine (Big Table) on SO. It seems that Big Table doesn't support NOT IN queries? Is that possible in any other NoSQL databases? Will it ever be possible ...
0
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3answers
359 views

Would a NoSQL solution be relevant for a real-time mobile game?

Developing an iOS/Android/WP real time game. Server side stuff will be done in Javascript using Node.js. It will be a trivia with 8-players rooms + an admin site made in Python with Flask (for stats, ...
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votes
1answer
94 views

NOSQL Database for [closed]

can anybody say me if I use NOSQL database and then kind of database should I use for development of a salary benchmarking website like glassdoor? Should that be MongoDB or Neo4j database, which is ...
2
votes
1answer
232 views

is it reasonable to use NoSQL for my project

Imagine you want to write a webapp for selling your car online. A car has a lot of attributes. Like how many doors, color, aircondition, etc. Some of them are simple boolean values, others might need ...
2
votes
2answers
751 views

How well, if at all, does Oracle NoSQL database integrate with Oracle RDBMS?

I currently have an application which runs on Oracle RDBMS and an area of new functionality which would be better supported by a NoSQL store. I am wondering if Oracle NoSQL Database may be a good ...
13
votes
2answers
1k views

Schema-less/flexible + ACID Database?

I am looking at rewriting a VB based on-premise (locally installed) application (invoicing+inventory) as a web based Clojure application for small enterprise customers. I am intending this to be ...
3
votes
2answers
329 views

Database choices for big data

I have many text files, their total size is about 300GB ~ 400GB. They are all in this format key1 value_a key1 value_b key1 value_c key2 value_d key3 value_e .... each line is composed by a key and ...
3
votes
1answer
193 views

Which database?

We have to launch a new service in my company with a big database. And I currently don't have that much knowledge. We did a small preview of the service and our biggest table had more than 2 100 000 ...
2
votes
2answers
931 views

Should I use SQL or NoSQL for this specific design (surveys)?

Building a small web application to create satisfaction surveys with a default list of questions and responses. The application is for a small audience of people (5,000 max) with surveys sent out when ...
1
vote
1answer
437 views

Books to start with big data [closed]

I would like to start learning about the big data technologies. I work in this area in the future. Does anyone know good books to start learning about it? Hadoop, HBase. Beginner - intermediate - ...
0
votes
0answers
127 views

Database (open source) for complex queries (for analytics) like these:

In an app, I'll be storing information about events, specifically, session_id url time type data: foo: bar bar: foo The data will basically be a hashmap (need to support arbitrary types / names ...
15
votes
3answers
9k views

What does horizontal scaling mean?

In database context, I have come across horizontal scalability as one of the advantages of the NOSQL databases. What does the term mean? http://en.wikipedia.org/wiki/CouchDB ...
3
votes
0answers
60 views

Membase data shared between users [closed]

I have begun writing a website using Membase (php memcached library) and I've come up against a conceptual wall. This is my scenario: I have some data that is stored in a key-value pair which will ...
2
votes
0answers
285 views

Strugling with updating a cassandra row in FluentCassandra

I have this problem with using Fluent Cassandra in a test application. All I want to do is set the IsOnline field to true inside the SignIn method, but I keep getting the exception supercolumn ...
-1
votes
1answer
327 views

Database for an application similar to Chatroulette

I am making an app that is similar to Chatroulette. When a user starts the app it finds someone that is not currently talking to anyone and have them talk to each other. At any point a user could ...
3
votes
2answers
842 views

Scalable DBaaS that can scale to hundreds of terabytes with easy backup and restore

I've gone over many DBaaS solutions, including Xeround (limited to 50G, in memory), NuoDB (currently in beta 7), DrawnToScale (not out yet), MongoDB (in memory), RavenDB (for ASP.NET, but NoSQL) and ...
0
votes
2answers
5k views

How to manage a huge database?

We are building a service witch require a huge database. We are actually planning on getting more than 100 millions rows in our biggest table. So, what are the best options to store all this data in ...
2
votes
1answer
879 views

How to store GPS coordinate and search places in a radius from a NoSQL DBMS (like DynamoDB)

My team need a DBMS like DynamoDB to store large amount of data, principally places and coordinates. I've considered to use some GIS-based DBMS (like PostGIS) with an index on the POINT, but DynamoDB ...
4
votes
2answers
263 views

Which database system can break me free?

I am currently running a MySQL Database for logging and analyzing those logs. My current table schema looks like this: CREATE TABLE `mylogs` ( `transfer_id` BIGINT UNSIGNED NOT NULL AUTO_INCREMENT ...
10
votes
1answer
4k views

CAP Theorem vs. BASE (NoSQL)

CAP Theorem vs. BASE (NoSQL) Hi, I’m trying to write a small paper for my work about NoSQL and have described the CAP Theorem as, if not all, then most NoSQL databases adheres to. I later read a ...
3
votes
4answers
1k views

Advice on choosing a really fast DBMS

I am working on a project that does real-time monitoring of data being transmitted, and logs if there are any of the various type of errors, etc. The CRUD operations are real-time. We initially ...
3
votes
1answer
299 views

to what “scale” of applications does nosql support?

Recently i came across the Nosql database concept, though i learnt how to and why of it, i did not get a proper answer to the question , to what scale of project does it support? Will it support ...