NoSQL Databases

Best NoSQL Databases include:

Redis, Couchbase, Amazon DynamoDB, and MongoDB.

NoSQL Databases  TrustMap

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NoSQL Databases Overview

What is a NoSQL Database?

NoSQL databases are databases designed to be used across large distrusted systems. They are notably much more scalable and much faster at handling very large data loads than traditional relational databases. Unlike other databases, NoSQL databases do not use the standard tabular relationships the relational databases employ. Instead, NoSQL databases allow for the querying and storage of data by a variety of other means, depending on the specific software.

NoSQL Features & Capabilities

  • Performance

  • Availability

  • Multi-Model

  • Concurrency

  • Security

  • Scalability

  • Data Model Flexibility

  • Deployment Model Flexibility

Advantages of NoSQL over Relational Databases?

Traditional relational databases store data in highly structured tabular form, with multiple rows and columns. While these data stores are highly flexible, easy to maintain, and effective for data stored on a single server, they do not scale very well in a distributed system compared to NoSQL database alternatives.

Distributed systems using inexpensive storage and processing power are becoming much more common and are often used in environments where there is a need for high availability and speed. NoSQL databases work significantly better across this kind of distributed system.


The other main advantages are:

  • NoSQL databases are Non-Relational meaning they are table-less and easier to manage. They provide a higher level of flexibility with newer data models.

  • They are often open source and therefore lower cost. NoSQL databases can be an appealing solution for smaller organizations with limited budgets.

  • NoSQL databases are optimized for specific data models that enable higher performance than trying to accomplish similar functionality with relational databases.

NoSQL Data Models

Not all NoSQL databases use the same data model. Although the primary distinction between a relational data store and a NoSQL database is the data model, there are several different types of NoSQL data model. Below are descriptions of three of the most popular data models used in NoSQL databases:

  • Document model: These NoSQL databases replace the familiar rows and columns structure with a document storage model. Each document is structured, frequently using the JavaScript Object Notation (JSON) model. The document data model is associated with object-oriented programming where each document is an object.

  • Graph model: NoSQL databases using the graph model usually require all the data to reside on one machine which negates one of the key advantages of NoSQL databases. This class of databases uses structures like data modes, edges and properties, making it easier to model relationships between entities in an application.

  • Key-value model: In this NoSQL database model, a key is required to retrieve and update data. The key-value data model is very simple and therefore scales well. However, this simplicity and scalability come at the cost of query complexity.

Pricing Information

NoSQL database costs can be a complex issue. Although the database itself can be free or much less expensive than a traditional relational database, the cost of maintaining a NoSQL product can be higher. Part of the reason for this is that expertise in the various types of NoSQL database is harder to find than traditional SQL expertise.

NoSQL Databases Products

(1-6 of 31) Sorted by Most Reviews

AllegroGraph
According to the vendor, AllegroGraph is a database technology that enables businesses to extract sophisticated decision insights and predictive analytics from highly complex, distributed data that cannot be uncovered with conventional databases. Unlike traditional relational databases or other NoSQ…
Scylla
ScyllaDB headquartered in Palo Alto offers Scylla, a NoSQL database alternative to Apache Cassandra available in Enterprise and Cloud DBaaS editions.
Dgraph
Dgraph Labs headquartered in San Francisco offers a non relational database via Dgraph, an open source, distributed graph database.
NCache
NCache is a 100% .NET / .NET Core Open Source in-memory distributed cache. NCache is built to provide a fast and linearly scalable distributed cache that caches application data and reduces expensive database trips. The vendor states NCache can remove performance bottlenecks related to data storage …
Amazon DocumentDB (with MongoDB compatibility)
Amazon DocumentDB (with MongoDB compatibility) is presented by the vendor as a fast, scalable, highly available, and fully managed document database service that supports MongoDB workloads. As a document database, Amazon DocumentDB is designed to make it easy to store, query, and index JSON data.
Amazon Keyspaces
Amazon Keyspaces (for Apache Cassandra) is a scalable, highly available, and managed Apache Cassandra–compatible database service. With Amazon Keyspaces, users can run Cassandra workloads on AWS using the same Cassandra application code and developer tools without having to provision, patch, or mana…

Frequently Asked Questions

What is a NoSQL database?

A NoSQL database is a database designed to allow for scalable data storage that can handle. Compared to other databases, NoSQL databases don’t use tabular relationships. Querying for NoSQL databases is handled differently depending on the software.

When is a NoSQL database the best option?

NoSQL databases are most appropriate for projects or businesses that have large amounts of data to be stored. Additionally, the minimal structure NoSQL databases provide can allow for quick development for projects that need it. NoSQL databases may not be ideal for storing highly-structured data.

How much do NoSQL databases cost?

The upfront costs for NoSQL databases can be very low, or even free. After initial costs though, maintaining a NoSQL database can be pricier depending on how it is hosted. Additionally, NoSQL experts are less common than SQL experts, so staffing for a NoSQL system can be more expensive.

What are the key considerations when selecting a NoSQL database?

The most important feature of a NoSQL database to consider is the data model it uses. Unlike SQL databases, which use a relational model, NoSQL databases use a variety of different models. The Key-Value model is the most scalable at the cost of complexity, while the document model is optimized for use with object-oriented programming languages. Many data models exist, so consider which one is best for your needs.