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Comparison Of Multi-model Databases
Comparison of multi-model databases (database management systems). {, style="text-align: left;" class="wikitable sortable" , - ! Database !! SQL !! Document !! Graph !! Object !! License !! Transactions , - , ArcadeDB , , , , , , , , , , Apache 2 License , , Full ACID , - , ArangoDB , , , , , , , , , , Apache 2 License , , Full ACID, pessimistic locking, configurable durability , - , Azure Cosmos DB , , , , , , , , , , Proprietary , , Full ACID within a partition, multiple consistency models , - , CrateDB , , , , , , , , , , Apache 2 License , , Eventual consistency, Optimistic concurrency control , - , EnterpriseDB , , , , , , , , , , Proprietary , , Full ACID , - , MarkLogic , , , , , , , , , , Proprietary , , , Full ACID , - , OrientDB , , , , , , , , , , Apache 2 License , , Full ACID, even distributed , - , SAP HANA , , , , , , , , , , Proprietary , , Full ACID , - , SAP HANA Cloud , ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Multi-model Database
In the field of database design, a multi-model database is a database management system designed to support multiple data models against a single, integrated backend. In contrast, most database management systems are organized around a single data model that determines how data can be organized, stored, and manipulated. Document, graph, relational, and key–value models are examples of data models that may be supported by a multi-model database. Background The relational data model became popular after its publication by Edgar F. Codd in 1970. Due to increasing requirements for horizontal scalability and fault tolerance, NoSQL databases became prominent after 2009. NoSQL databases use a variety of data models, with document, graph, and key–value models being popular. A multi-model database is a database that can store, index and query data in more than one model. For some time, databases have primarily supported only one model, such as: relational database, document-orient ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
EnterpriseDB
EnterpriseDB (EDB), a privately held company based in Massachusetts, provides software and services based on the open-source database PostgreSQL (also known as Postgres), and is one of the largest contributors to Postgres. EDB develops and integrates performance, security, and manageability enhancements into Postgres to support enterprise-class workloads. EDB has also developed database compatibility for Oracle to facilitate the migration of workloads from Oracle to EDB Postgres and to support the operation of many Oracle workloads on EDB Postgres. EDB provides a portfolio of databases and tools that extend Postgres for enterprise workloads. This includes fully managed Postgres in the cloud, extreme high availability for Postgres, command line migration tools, Kubernetes Operator and container images, management, monitoring and optimizing of Postgres, enterprise ready Oracle migration tools and browser-based schema migration tools EnterpriseDB was purchased by Great Hill Partn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
GNU General Public License
The GNU General Public License (GNU GPL or simply GPL) is a series of widely used free software licenses that guarantee end users the Four Freedoms (Free software), four freedoms to run, study, share, and modify the software. The license was the first copyleft for general use and was originally written by the founder of the Free Software Foundation (FSF), Richard Stallman, for the GNU Project. The license grants the recipients of a computer program the rights of the Free Software Definition. These GPL series are all copyleft licenses, which means that any derivative work must be distributed under the same or equivalent license terms. It is more restrictive than the GNU Lesser General Public License, Lesser General Public License and even further distinct from the more widely used permissive software licenses BSD licenses, BSD, MIT License, MIT, and Apache License, Apache. Historically, the GPL license family has been one of the most popular software licenses in the free and open ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Virtuoso Universal Server
Virtuoso Universal Server is a middleware and database engine hybrid that combines the functionality of a traditional relational database management system (RDBMS), object–relational database (ORDBMS), virtual database, RDF, XML, free-text, web application server and file server functionality in a single system. Rather than have dedicated servers for each of the aforementioned functionality realms, Virtuoso is a "universal server"; it enables a single multithreaded server process that implements multiple protocols. The free and open source edition of Virtuoso Universal Server is also known as OpenLink Virtuoso. The software has been developed by OpenLink Software with Kingsley Uyi Idehen and Orri Erling as the chief software architects. Database structure Core database engine Virtuoso provides an extended object–relational model, which combines the flexibility of relational access with inheritance, run time data typing, late binding, and identity-based access. Vir ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SAP HANA Cloud
Sap is a fluid transported in xylem cells (vessel elements or tracheids) or phloem sieve tube elements of a plant. These cells transport water and nutrients throughout the plant. Sap is distinct from latex, resin, or cell sap; it is a separate substance, separately produced, and with different components and functions. Insect honeydew is called sap, particularly when it falls from trees, but is only the remains of eaten sap and other plant parts. Types of sap Saps may be broadly divided into two types: xylem sap and phloem sap. Xylem sap Xylem sap (pronounced ) consists primarily of a watery solution of hormones, mineral elements and other nutrients. Transport of sap in xylem is characterized by movement from the roots toward the leaves. Over the past century, there has been some controversy regarding the mechanism of xylem sap transport; today, most plant scientists agree that the cohesion-tension theory best explains this process, but multiforce theories that hypo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SAP HANA
SAP HANA (HochleistungsANalyseAnwendung or High-performance ANalytic Application) is an in-memory, column-oriented, relational database management system developed and marketed by SAP SE. Its primary function as the software running a database server is to store and retrieve data as requested by the applications. In addition, it performs advanced analytics (predictive analytics, spatial data processing, text analytics, text search, streaming analytics, graph data processing) and includes extract, transform, load (ETL) capabilities as well as an application server. History During the early development of SAP HANA, a number of technologies were developed or acquired by SAP SE. These included TREX search engine ( in-memory column-oriented search engine), P*TIME (in-memory online transaction processing (OLTP) Platform acquired by SAP in 2005), and MaxDB with its in-memory liveCache engine. The first major demonstration of the platform was in 2008: teams from SAP SE, the Hasso ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
OrientDB
OrientDB is an open source NoSQL database management system written in Java (programming language), Java. It is a Multi-model database, supporting Graph database, graph, Document-oriented database, document, Key-value database, key/value, and Object database, object models, but the relationships are managed as in graph databases with direct connections between records. It supports schema-less, schema-full and schema-mixed modes. It has a strong security profiling system based on users and roles and supports querying with Gremlin (programming language), Gremlin along with SQL extended for graph traversal. OrientDB uses several indexing mechanisms based on B-tree and Extendible hashing, the last one is known as "hash index", there are plans to implement LSM-tree and Fractal tree index based indexes. Each record has Surrogate key which indicates position of record inside of Array list , links between records are stored either as single value of record's position stored inside of refe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MarkLogic
MarkLogic Corporation is an American software business that develops and provides an enterprise NoSQL database, also named ''MarkLogic''. The company was founded in 2001 and is based in San Carlos, California. MarkLogic is a privately held company with over 500 employees and was acquired by Vector Capital in October 2020. It has offices in the United States, Europe, Asia, and Australia. The company claims to have over 1,000 customers, including Chevron, JPMorgan Chase, Erie Insurance Group, Johnson & Johnson, and the US Army. It also claims that six of the top ten global banks are MarkLogic customers. In 2016 Forrester Research ranked MarkLogic as one of the nine leading NoSQL database vendors in the market, and appeared in several Gartner Magic Quadrant reports for Operational Database Management Systems. In 2017, Gartner ranked MarkLogic as a 'Visionary' in the data warehouse market. History MarkLogic was first named Cerisent and was founded in 2001 by Christopher Lindblad, w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Optimistic Concurrency Control
Optimistic concurrency control (OCC), also known as optimistic locking, is a concurrency control method applied to transactional systems such as relational database management systems and software transactional memory. OCC assumes that multiple transactions can frequently complete without interfering with each other. While running, transactions use data resources without acquiring locks on those resources. Before committing, each transaction verifies that no other transaction has modified the data it has read. If the check reveals conflicting modifications, the committing transaction rolls back and can be restarted. Optimistic concurrency control was first proposed by H. T. Kung and John T. Robinson. OCC is generally used in environments with low data contention. When conflicts are rare, transactions can complete without the expense of managing locks and without having transactions wait for other transactions' locks to clear, leading to higher throughput than other concurrency cont ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Database Management System
In computing, a database is an organized collection of data stored and accessed electronically. Small databases can be stored on a file system, while large databases are hosted on computer clusters or cloud storage. The design of databases spans formal techniques and practical considerations, including data modeling, efficient data representation and storage, query languages, security and privacy of sensitive data, and distributed computing issues, including supporting concurrent access and fault tolerance. A database management system (DBMS) is the software that interacts with end users, applications, and the database itself to capture and analyze the data. The DBMS software additionally encompasses the core facilities provided to administer the database. The sum total of the database, the DBMS and the associated applications can be referred to as a database system. Often the term "database" is also used loosely to refer to any of the DBMS, the database system or an applicati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eventual Consistency
Eventual consistency is a consistency model used in distributed computing to achieve high availability that informally guarantees that, if no new updates are made to a given data item, eventually all accesses to that item will return the last updated value. Eventual consistency, also called optimistic replication, is widely deployed in distributed systems and has origins in early mobile computing projects. A system that has achieved eventual consistency is often said to have converged, or achieved replica convergence. Eventual consistency is a weak guarantee – most stronger models, like linearizability, are trivially eventually consistent. Eventually-consistent services are often classified as providing BASE semantics (basically-available, soft-state, eventual consistency), in contrast to traditional ACID (atomicity, consistency, isolation, durability). In chemistry, a base is the opposite of an acid, which helps in remembering the acronym. According to the same resource, thes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CrateDB
CrateDB is a distributed SQL database management system that integrates a fully searchable document-oriented data store. It is open-source, written in Java, based on a shared-nothing architecture, and designed for high scalability. CrateDB includes components from Trino, Lucene, Elasticsearch and Netty. History The CrateDB project was started by Christian Lutz, Bernd Dorn, and Jodok Batlogg, an open source contributor and creator who has contributed to the Open Source Initiative Vorarlberg while at Lovely Systems in Dornbirn. The software is an open source, clustered database used for fast text search and analytics."CrateDB packs NoSQL flexibility, SQL familiarity" InfoWorld. Dec. 19, 2016 The company, now called Crate.io, raised its fi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
