DBMS > HarperDB vs. RDF4J vs. Ultipa
System Properties Comparison HarperDB vs. RDF4J vs. Ultipa
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|Editorial information provided by DB-Engines
|HarperDB Xexclude from comparison
|RDF4J formerly known as Sesame Xexclude from comparison
|Ultipa Xexclude from comparison
|Ultra-low latency distributed database with an intuitive REST API supporting NoSQL and SQL (including joins). Deployment of functions and databases simultaneously with a consolidated node-level architecture.
|RDF4J is a Java framework for processing RDF data, supporting both memory-based and a disk-based storage.
|High performance Graph DBMS supporting HTAP high availability cluster deployment
|Primary database model
|Since 2016 officially forked into an Eclipse project, former developer was Aduna Software.
|3.1, August 2021
|License Commercial or Open Source
|commercial free community edition available
|Open Source Eclipse Distribution License (EDL), v1.0.
|Cloud-based only Only available as a cloud service
|DBaaS offerings (sponsored links) Database as a Service
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|Server operating systems
|yes RDF Schemas
|Typing predefined data types such as float or date
|yes JSON data types
|XML support Some form of processing data in XML format, e.g. support for XML data structures, and/or support for XPath, XQuery or XSLT.
|SQL Support of SQL
|SQL-like data manipulation statements
|APIs and other access methods
RESTful HTTP/JSON API
RIO RDF Input/Output
SeRQL Sesame RDF Query Language
Sesame REST HTTP Protocol
|RESTful HTTP API
|Supported programming languages
|Server-side scripts Stored procedures
|Custom Functions since release 3.1
|Partitioning methods Methods for storing different data on different nodes
|A table resides as a whole on one (or more) nodes in a cluster
|Replication methods Methods for redundantly storing data on multiple nodes
|yes the nodes on which a table resides can be defined
|MapReduce Offers an API for user-defined Map/Reduce methods
|Consistency concepts Methods to ensure consistency in a distributed system
|Foreign keys Referential integrity
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data
|Atomic execution of specific operations
|ACID Isolation support depends on the API used
|Concurrency Support for concurrent manipulation of data
|Durability Support for making data persistent
|yes, using LMDB
|yes in-memory storage is supported as well
|In-memory capabilities Is there an option to define some or all structures to be held in-memory only.
|User concepts Access control
|Access rights for users and roles
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|RDF4J formerly known as Sesame
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