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Great Reads

TmStorage, Open-source Storage Engine for .NET

by Tomaz Koritnik

TmStorage is a structureless virtual file system from which complex storages or databases can be built.

Aggregation in MongoDB

by Vikas Sharma

In this article, we will focus on aggregation pipeline. I'll try to cover each major section of it using simple examples. We will be writing mongo shell commands to perform aggregation.

Introduction to NoSQL and Polyglot Persistence

by Nikola M. Živković

Introduction to NoSQL and Polyglot Persistence

Using C++ to Simplify the Extensible Storage Engine (ESE) API - Part 1

by Espen Harlinn

Easy to use C++ wrapper classes for the Extensible Storage Engine (ESE) C API

Latest Articles

News Track - News Aggregator

by Gerard Castelló Viader

A news tracking or news aggregator website that allows users to share content they find on the Internet and give it certain visibility

NoSQL or not NoSQL?

by Daniele Fontani

That is the question. A comparison between these two technologies and some tips to choose the best that suits your needs.

metastrings: A Simple File-based Dynamic NoSQL Database

by Michael Sydney Balloni

Learn about the inner workings of a dynamic database, and how SQLite is a great fit

An Ultrafast Light Timeseries Storage Engine – LMDB Part 1

by Espen Harlinn

A lightweight timeseries storage engine, capable of storing millions of timeseries values per second

All Articles

NoSQL

'Documentreference' object has no attribute 'push'

29 Apr 2021 by Member 15053137

I'm writing an app in Python that used Firestore/Firebase! I've got the database all set up. Now I've managed to add an account number into the database see below. Now each time the program runs it just writes over the already added account...

A First Look at NoSQL and MongoDB in Particular

16 Mar 2015 by Sander Rossel

Getting your feet wet in NoSQL with MongoDB!

A Mobile Application Served From CouchDB

28 Nov 2012 by Keyhole Software

A mobile application served from CouchDB.

Adding new documents to a collection in Mongodb

12 Apr 2015 by ColdskyXia

How to add new documents to a collection more efficiently

Aggregation in MongoDB

27 Oct 2016 by Vikas Sharma

In this article, we will focus on aggregation pipeline. I'll try to cover each major section of it using simple examples. We will be writing mongo shell commands to perform aggregation.

An Abstract Generic DAO for RavenDB

26 Feb 2016 by Ranjan.D

Abstract and generic DAO for RavenDB

An Ultrafast Light Timeseries Storage Engine – LMDB Part 1

23 Mar 2021 by Espen Harlinn

A lightweight timeseries storage engine, capable of storing millions of timeseries values per second

Any tool providing NoSQL (MongoDB) Data Provider

8 Jun 2014 by AbidHussain128

Hi,Can any one let me know the MongoDB data storage provider at cloud Front?I want my website Performance very good.I just require any online tool from Amazon.(I request 1000's of request in one second to give me 100's of records)Some details:-My Website hosted at Amazon EC2....

Any tool providing NoSQL (MongoDB) Data Provider

8 Jun 2014 by Prasad Khandekar

Hello Abid,MongoDB runs well on Amazon EC2. You can Manually Install[^] the MonGoDB or use a pre-configured AMI[^] from the AWS Marketplace.Regards,

Any tool providing NoSQL (MongoDB) Data Provider

9 Jun 2014 by Suvabrata Roy

Hi,How to install Mongo DB on Amazon EC2: https://mongodb-documentation.readthedocs.org/en/latest/ecosystem/tutorial/install-mongodb-on-amazon-ec2.html[^]Mongo DB drivers : http://docs.mongodb.org/ecosystem/drivers/[^]Mongo DB use case :...

ASP.Net Session Storage - NoSQL or AppFabric

20 Aug 2013 by riverblues

We currently use SQL for out-of-proc storage of ASP.Net sessions. We are looking to move to AppFabric. I was also reading about NoSql (Redis/CloudBase). From what I researched, both are good alternatives to SQL though NoSQL does not match up to the memory management of SQL. I am looking if...

ASP.Net Session Storage - NoSQL or AppFabric

20 Aug 2013 by Mehdi Gholam

You are definitely better off using a Key/Value store for your asp.net sessions instead of SQL-Server.There are a multitude of different KV stores out there both on-site and hosted.

Automating backup for MongoDB using CRON and S3CMD

19 Feb 2013 by Lazaro Lima

This paper attempts to pass all the steps to create an automated backup for a MongoDB Server on a Linux Server where all backups are sent to Amazon AWS S3 service scheduled through crontab.

Basics of MongoDB

12 Oct 2014 by binit.ku.singh

MongoDB was designed from the beginning to scale out. Its document-oriented data model allows it to automatically split up data across multiple servers.

Beginners' guide to using MongoDB 4.0.2 and the official C# driver

16 Sep 2018 by George Swan

Highlights the latest developments in both the Mongo open-source document database and the open-source official C# driver.

Best way on storing and retrieving data from a nosql database like firestore

20 Apr 2022 by nSv.23

I am developing a personal ledger web/mobile app using Vue3 with Quasar, Pinia and vue router and Firebase for backend. I am in confusion on how to save the transactions on the Firebase's firestore cloud. I have the following possible ways of...

Best way to store data from irregular tables in database

8 Dec 2020 by RickZeeland

Take a look at: Graph database - Wikipedia[^] And a listing here: graph-databases[^]

Building OpenPOS: Part 7 – NoSQL, MSSQL, SQL CE?

6 May 2010 by rudigrobler

Building OpenPOS: Part 7 – NoSQL, MSSQL, SQL CE?

Cachalot DB - Very Fast Transactional Database for .NET Applications - Part 2

16 Apr 2019 by Dan Ionescu (USINESOFT)

More on data manipulation

Can commercial support for Couchdb ?

13 Nov 2013 by Mayank Engineer

Hi all,I find for commercial support for couchdb because i don't know how to deploy database(Couchdb) on server with web application (ASP.NET) i use .If you know how to deploy database in server so tell me

Can commercial support for Couchdb ?

19 Nov 2013 by Mayank Engineer

CouchDb can't provide any commercial support Other NOSQL database provide commercial support and online help provide like Couchbase server ,cassandra , mongodb etc..but couchdb not provide any online help

Cassandra on Windows in Angular MVC API Based Application

23 Feb 2016 by otark777

Some thoughts about one page Angular site based on ASP.NET Web API 2 and Cassandra NOSQL database

Chat Application Using Firebase, Javascript

15 Dec 2014 by Arlen Navasartian

This is a simple example of a web based chat application implemented using Firebase.

Choosing MySQL or NoSQL Database For My Scenario

11 May 2015 by bilal78699

Hello All,I have a scenario where i have to store timesheets of different projects. The object graph is like this:Timesheet->Project->UserA user can create multiple projects. And a project can have multiple timesheets. So in my scenario it is expected that timesheet data will grow...

Connect MongoDB from Any Working Directory on ubuntu

4 Nov 2014 by binit.ku.singh

Connect MongoDB from any working directory on ubuntu

Cosmosdb filtering over generic type (object)

5 Mar 2020 by Member 14637786

Hello, I have quite unique situation to handle (I guess). So the scenario is that I have a CosmosDb and a model of data looking like this: { "deviceId": "exampleId", "properties": [ { "name": "temperature", "value": 20 }, {...

could someone provide links to mongodb projects?

15 Jun 2015 by Member 11768790

i am new to mongodb and want to work on a project,but i cant find any good source for projects so please answer some good links..

could someone provide links to mongodb projects?

15 Jun 2015 by Krunal Rohit

Hey,This isn't how it works. We're not here to google for you. You can google this simple thing by yourself.After getting the proper project, if you stuck somewhere then let us know, we'd help you but not this way.Hope I'm clear to you.-KR

Data modelling tool for cassandra

28 Dec 2015 by vamsi.welcome

we are using datastax - data modeling tool for Cassandra database. As an advancement I'm looking a data modeling tool(open source) which facilitate generate script for DDL operations like sql server management studio/TOAD. Please suggest me a tool which has this feature for Cassandra database.

Data modelling tool for cassandra

28 Dec 2015 by Kornfeld Eliyahu Peter

I do not know about open-source, but as much as I understand KDM[^] is at least free...(Why open-source by the way?)

db4objects Domain and DAL

16 Aug 2011 by Raspberry Man

How to make the domain independent from db4objects.

Document Databases : A look at them

27 May 2012 by Sacha Barber

A look at several Document database, and a look at how to use them

DotNet Programming using Cassandra

12 Apr 2014 by Ganesan Senthilvel

An article on DotNet programming using Cassandra storage

download NO sql databse

12 Jun 2013 by sharmarun

i starts RnD on NO Sql databasefrom where to download NO sql databseplease help me out

download NO sql databse

12 Jun 2013 by CHill60

Google is a marvellous invention ... if you had tried querying nosql database download you would have found the download page on the Oracle NoSql site http://www.oracle.com/technetwork/database/nosqldb/downloads/default-495311.html[^]

Event Sourcing Overview

5 Mar 2015 by Duncan Edwards Jones

An introduction to Event Sourcing for the relational database savvy developer

Evolution of Data Objects Within Database Applications

27 Oct 2015 by Alexander Imas

The subject of this article is database applications. These applications reflect objects from the real world in program objects in the application.

FileDb - A Simple NoSql Database for Silverlight, Windows Phone and .NET

9 Nov 2011 by Brett Goodman

How to use FileDb as a local database in your .NET, Silverlight and Windows Phone applications

Windows-Phone-7

Friday the 13th - JSON is Coming to SQL Server

8 Dec 2015 by Jovan Popovic(MSFT)

Overview of built-in support for JSON text processing in new SQL Server

Get data for each subcollection for each document of a collection in firebase

14 Jul 2022 by kkongkk

I have a fitness dashboard to show activity of users. However the way the database is structured has made this difficult.{collection/document/subcollection/document} Currently the dashboard does show each user and all the information (i.e....

Get data for each subcollection for each document of a collection in firebase

14 Jul 2022 by Gerry Schmitz

Bad design leads to bad code. There is no logical reason to create a "subcollection" simply because someone works out more than once in a day. You have a workout for a give date and time by person x. You want to total by day, week, etc. it's...

Getting Started with Cloudant

9 Jun 2016 by Mihail Mateev

Cloudant is a NoSQL database as a service (DBaaS) built from the ground up to scale globally, running non-stop, and handling a wide variety of data types.

product-showcase

Getting Started with NoSQL and MongoDB

26 Feb 2014 by JonB3232

Getting Started with NoSQL and MongoDB

Good web app framework backend for mobile SPA using REST/JSON and a NoSQL DB?

3 Sep 2014 by canam2

In researching technologies for development of a single-page web application (SPA) for mobile deployment, I am trying to determine a good backend web application framework to use.I like the idea of using a NoSQL DB with a clean REST/JSON API and plan to use an client-side MVC framework like...

web_development

Hands-on: Build a Node.js-powered chatroom web app | Part 3

19 May 2015 by Rami Sayar

In this installment, I will show you how to use your existing express-based Node.js app to create a chatroom backend with WebSocket support.

haw to get data from Cloudant (json document)

22 Apr 2015 by M-osab

Hello, I am working with asp.net, c#database : cloudant I have data in cloudant in Json Format, I want to get data from cloudant,for exmeple : when I create a profil, data will saved in cloudant, in the next page I want to go to profil_view.aspx where I can appear this data.sorry my...

haw to get data from Cloudant (json document)

22 Apr 2015 by Sergey Alexandrovich Kryukov

One way of working with JSON in .NET would be using Data Contract: deseralize a json string array[^].If this is not JSON created in .NET using Data Contract, it still could be possible to create a contract matching the data structure. In all cases, you will need a comprehensive description...

High Performance Search using MongoDB and ASP.NET MVC

29 Dec 2015 by Peter Carrasco

High Performance search using MongoDB and ASP.NET MVC

How Binary XML Simplifies Database and Protocol Design

21 Sep 2015 by Lao Chen

A lightweight method to process binary XML. As a general data representation technique, it simplifies the design of database and protocol with convenience.

How can I save image into Cloudant ?

29 Apr 2015 by M-osab

Hello, I want to save image into Nosql DB Cloudant.I am working with c#.thanks.

How complicated can a search be?

28 Jul 2016 by Mihail Mateev

Cloudant distributed database as aservice (DBaaS) is engineered in a way to help you solve issues with indexingand searching by integrating the Apache Lucene search library.

product-showcase

How do I connect to MongoDB from a PLC using Structured Text (IEC 61131-3)?

18 Oct 2015 by Arjunitedred

Hello everyone,How do I send data from a PLC (Bosch Indraworks) to MongoDB and what function blocks would be required for the same? I looked up on RIL_SocketComm.library and none of them are compatible for MongoDB. It would really mean a lot if anyone could help me with this.Thanks.

How do I create database model for a chat application? Should I use SQL or nosql?

9 May 2020 by Prakash Yogi

I am creating an application like facebook which would have features like posting, chatting,adding stories etc. I am using Django for it. I am confused over choice of databases(sql or nosql) and over ther database models. I am Django's default...

How do I create database model for a chat application? Should I use SQL or nosql?

9 May 2020 by RickZeeland

It depends, if you want to make a real-time chat application usually there is no database at all. Read more about it here: simple-chat-app-using-django-channel-ed5032b79b9c[^] If you want to use a database, PostgreSQL is a good choice, see: ...

How do I create variable model in django?

8 Jun 2020 by Prakash Yogi

I am developing a quiz making website in Django where users can generate quiz with n numbers of questions where questions can be of different type(MCQ,text etc.). How can I create a model for it so that users can generate questions (of any amount...

How Hadoop Handles Big Data?

31 Jul 2013 by CyrusT

suppose that a user wants to run a job on a hadoop cluster,with a primary data of size 10 petabytes.how and when the client node,breaks this data into blocks?I mean,since the client has limited resources,the user can't upload such a big file directly on it.he should copy it part by part and...

How Hadoop Handles Big Data?

26 Dec 2013 by shailesh91082

May be this link could help youhttp://www.youtube.com/watch?v=ziqx2hJY8Hg[^]

How Hadoop Handles Big Data?

4 Feb 2014 by Swab.Jat

okay, you need to distinguish between 1. building a 1 petabytes data set Usually, you don't build a single 1 petabytes database by importing a 1 PB file, usually a PB database get built up over time, one small piece a time2. running an analysis of 1 petabytes data set Hadoop HDFS...

How should I get started with nosql databases ?

1 Oct 2020 by deepeshdm3434

I have previously worked with Relational databases and they are pretty much very easy to implement. Recently I got curious about Nosql databases. But I have no idea how I should get started with ? I as far as I have researched there are 4 types...

How store data for local window application?

26 Oct 2013 by ExpertITM

Hello Frnds,I am developing a windows form application and now I want to save some data in clients system for that application just like store in sql.so, whats is best and efficient method or Technic to store application data for window application. In my application there is only...

How store data for local window application?

26 Oct 2013 by Zoltán Zörgő

We can hardy answer your question in a manner that will really help you, since you provided far too few information about your needs.The answer depend on:- CRUD balances (which is more intensive of the four operations)- the kind (text, numeric, blob) and structure (more like DOM or more...

How store data for local window application?

26 Oct 2013 by S. M. Ahasan Habib

From windows application if you want store your data in client side i think one of the 3 solutions you can choose.1. Client side you can store your data to an xml file.2. You can set up sql database like sql express to the client and store data there.3. You can store data as csv format...

How to Insert a document with array of subDocuments into MongoDB by C# classes?

19 Mar 2014 by Member 10683893

HiI'm amateur with mongodb and C# driver.I try to Insert a document with array of sub-documents by class.my codes are these:This is my classes:public class Entity { public string name { get; set; } public string family { get; set; } ...

How to write mongoDB query to sum up elements in an array that match another array?

29 Sep 2015 by Ivan.0

In my mongoDB dbs there is a collection A1 that has an array of embedded objects B. I want to group all elements in A1 by the sum of a certain field of B in the array field of A1,namely X. Meanwhile the value of X field need to be an element in another collection A2. That's to say I need to sum...

Implementing Custom ASP.NET State Management using Redis and ASP.Net MVC5 – Part 1

10 Oct 2014 by Mathew Soji

A walkthrough on installing Redis server and implementing a custom ASP.NET State Management using Redis and ASP.NET MVC5.

Implementing Joins in Hadoop Map-Reduce

29 Jan 2015 by Suffyan Asad

How to implement Joins in Hadoop Map-Reduce applications during Reduce and Map phases

Introduction to NoSQL and Polyglot Persistence

16 Oct 2017 by Nikola M. Živković

Introduction to NoSQL and Polyglot Persistence

LiteDB - A .NET NoSQL Document Store in a Single Data File

18 Oct 2017 by Mauricio David

Simple, fast and free embedded .NET NoSQL Document Store in single data file

LiteDB - A .NET NoSQL Document Store in a Single Data File

14 Oct 2015 by Terence Wallace

Alternative VB.NET version of "LiteDB - A .NET NoSQL Document Store in a single data file"

MEAN Stack Beginner Tutorial

9 Nov 2015 by nomi ali

In this article we learn MEAN Stack a combination of open source JavaScript framework. How they work and How can create a single page application using these technologies. We use these JavaScript technologies not only on front end but also on the back end.

MEAN web development #7: MongoDB and Mongoose

7 Sep 2015 by Sander Rossel

The seventh in a series on MEAN web development.

metastrings: A Simple File-based Dynamic NoSQL Database

9 Aug 2021 by Michael Sydney Balloni

Learn about the inner workings of a dynamic database, and how SQLite is a great fit

Migrate Data from SQL Server to Azure Cosmos DB

8 Nov 2018 by Srinivasa Dinesh Parupalli

Importing Documents from SQL Server to Azure Cosmos DB

Migration of Relational Data structure to Cassandra (No SQL) Data structure

10 Nov 2011 by Phani Krishna Kollapur Gandla

Migration of Relational Data structure to Cassandra (No SQL) Data structure

MongoDB - Updating Records

6 May 2013 by Muhammad Idrees GS

Queries to explain update items in MongoDB

15 Jun 2010 by Craig G. Wilson

Using MongoDB from C#.

30 Jan 2012 by Muhammad Idrees GS

This article demonstrates how to setup MongoDB running on your machine

MongoDB Hadoop Hortonworks in Windows Server 2008

11 Jul 2014 by LM Heah

MongoDB Hadoop Hortonworks in Windows Server 2008

Movable Globally Distributed System with Database

7 Nov 2017 by Bruce Yang CL

A distributed system architecture, mobile devices around the world, free charge to construct your global application

News Track - News Aggregator

1 Jul 2022 by Gerard Castelló Viader

A news tracking or news aggregator website that allows users to share content they find on the Internet and give it certain visibility

Node Application Server with CouchDB

12 Dec 2012 by Keyhole Software

Node Application Server with CouchDB

Northwind Database with NoSQL DBreeze

22 Jul 2014 by Pradip Koli

Using NoSQL DBreeze database with ASP.NET on SQL Northwind Database.