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RethinkDB is a free and open-source, distributed document-oriented database originally created by the company of the same name. The database stores JSON documents with dynamic schemas, and is designed to facilitate pushing real-time updates for query results to applications.
C#, Java, Python, Node.js, JavaScript, SQL: Platform-as-a-Service offering, part of the Microsoft Azure platform. Builds upon and extends the earlier Azure DocumentDB. Yes DocumentDB: Amazon Web Services: Proprietary online service various, REST: fully managed MongoDB v3.6-compatible database service Yes DynamoDB: Amazon Web Services: Proprietary
MEAN (MongoDB, Express.js, AngularJS (or Angular), and Node.js) [1] is a source-available JavaScript software stack for building dynamic web sites and web applications. [2] A variation known as MERN replaces Angular with React.js front-end, [3] [4] and another named MEVN use Vue.js as front-end.
One of the arguments against using an OODBMS is that it may not be able to execute ad-hoc, application-independent queries. [citation needed] For this reason, many programmers find themselves more at home with an object-SQL mapping system, even though most object-oriented databases are able to process SQL queries to a limited extent. Other ...
NoSQL (originally referring to "non-SQL" or "non-relational") [1] is an approach to database design that focuses on providing a mechanism for storage and retrieval of data that is modeled in means other than the tabular relations used in relational databases.
The nested set model is a technique for representing nested set collections (also known as trees or hierarchies) in relational databases.. It is based on Nested Intervals, that "are immune to hierarchy reorganization problem, and allow answering ancestor path hierarchical queries algorithmically — without accessing the stored hierarchy relation".
An RDF graph notation or a statement is represented by: a node for the subject, a node for the object, and an arc for the predicate. A node may be left blank, a literal and/or be identified by a URI. An arc may also be identified by a URI. A literal for a node may be of two types: plain (untyped) and typed.
MongoDB Collections Documents Compatible with wire protocol version 6 and server version 3.6 of the MongoDB. [6] Gremlin Graphs Nodes and edges Compatible with version 3.2 of the Gremlin specification. Cassandra Table Row Compatible with version 4 of the Cassandra Query Language (CQL) wire protocol. Azure Table Storage Table Item etcd Key Value