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DBMS > FatDB vs. OpenEdge vs. PostGIS vs. Prometheus vs. VelocityDB

System Properties Comparison FatDB vs. OpenEdge vs. PostGIS vs. Prometheus vs. VelocityDB

Editorial information provided by DB-Engines
NameFatDB  Xexclude from comparisonOpenEdge  Xexclude from comparisonPostGIS  Xexclude from comparisonPrometheus  Xexclude from comparisonVelocityDB  Xexclude from comparison
FatDB/FatCloud has ceased operations as a company with February 2014. FatDB is discontinued and excluded from the ranking.
DescriptionA .NET NoSQL DBMS that can integrate with and extend SQL Server.Application development environment with integrated database management systemSpatial extension of PostgreSQLOpen-source Time Series DBMS and monitoring systemA .NET Object Database that can be embedded/distributed and extended to a graph data model (VelocityGraph)
Primary database modelDocument store
Key-value store
Relational DBMSSpatial DBMSTime Series DBMSGraph DBMS
Object oriented DBMS
Secondary database modelsRelational DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score3.45
Rank#85  Overall
#46  Relational DBMS
Score21.72
Rank#29  Overall
#1  Spatial DBMS
Score7.69
Rank#50  Overall
#3  Time Series DBMS
Score0.11
Rank#354  Overall
#37  Graph DBMS
#15  Object oriented DBMS
Websitewww.progress.com/­openedgepostgis.netprometheus.iovelocitydb.com
Technical documentationdocumentation.progress.com/­output/­ua/­OpenEdge_latestpostgis.net/­documentationprometheus.io/­docsvelocitydb.com/­UserGuide
DeveloperFatCloudProgress Software CorporationVelocityDB Inc
Initial release20121984200520152011
Current releaseOpenEdge 12.2, March 20203.4.2, February 20247.x
License infoCommercial or Open SourcecommercialcommercialOpen Source infoGPL v2.0Open Source infoApache 2.0commercial
Cloud-based only infoOnly available as a cloud servicenonononono
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
Implementation languageC#CGoC#
Server operating systemsWindowsAIX
HP-UX
Linux
Solaris
Windows
Linux
Windows
Any that supports .NET
Data schemeschema-freeyesyesyesyes
Typing infopredefined data types such as float or dateyesyesyesNumeric data onlyyes
XML support infoSome form of processing data in XML format, e.g. support for XML data structures, and/or support for XPath, XQuery or XSLT.yesyesno infoImport of XML data possibleno
Secondary indexesyesyesyesnoyes
SQL infoSupport of SQLno infoVia inetgration in SQL Serveryes infoclose to SQL 92yesnono
APIs and other access methods.NET Client API
LINQ
RESTful HTTP API
RPC
Windows WCF Bindings
JDBC
ODBC
RESTful HTTP/JSON API.Net
Supported programming languagesC#Progress proprietary ABL (Advanced Business Language).Net
C++
Go
Haskell
Java
JavaScript (Node.js)
Python
Ruby
.Net
Server-side scripts infoStored proceduresyes infovia applicationsyesuser defined functionsnono
Triggersyes infovia applicationsyesyesnoCallbacks are triggered when data changes
Partitioning methods infoMethods for storing different data on different nodesShardinghorizontal partitioning infosince Version 11.4yes infobased on PostgreSQLShardingSharding
Replication methods infoMethods for redundantly storing data on multiple nodesselectable replication factorSource-replica replicationyes infobased on PostgreSQLyes infoby Federation
MapReduce infoOffers an API for user-defined Map/Reduce methodsyesnononono
Consistency concepts infoMethods to ensure consistency in a distributed systemEventual Consistency
Immediate Consistency
Immediate ConsistencyImmediate ConsistencynoneImmediate Consistency
Foreign keys infoReferential integritynoyesyesnono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datanoACIDACIDnoACID
Concurrency infoSupport for concurrent manipulation of datayesyesyesyesyes
Durability infoSupport for making data persistentyesyesyesyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.nononoyes
User concepts infoAccess controlno infoCan implement custom security layer via applicationsUsers and groupsyes infobased on PostgreSQLnoBased on Windows Authentication

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More resources
FatDBOpenEdgePostGISPrometheusVelocityDB
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