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DBMS > EJDB vs. LMDB vs. Microsoft Azure Synapse Analytics vs. TerminusDB

System Properties Comparison EJDB vs. LMDB vs. Microsoft Azure Synapse Analytics vs. TerminusDB

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Editorial information provided by DB-Engines
NameEJDB  Xexclude from comparisonLMDB  Xexclude from comparisonMicrosoft Azure Synapse Analytics infopreviously named Azure SQL Data Warehouse  Xexclude from comparisonTerminusDB infoformer name was DataChemist  Xexclude from comparison
DescriptionEmbeddable document-store database library with JSON representation of queries (in MongoDB style)A high performant, light-weight, embedded key-value database libraryElastic, large scale data warehouse service leveraging the broad eco-system of SQL ServerScalable Graph Database platform making enterprise data available by exploiting inferred entities and relationships
Primary database modelDocument storeKey-value storeRelational DBMSGraph DBMS
Secondary database modelsDocument store
RDF store
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.30
Rank#294  Overall
#44  Document stores
Score2.33
Rank#118  Overall
#21  Key-value stores
Score22.71
Rank#30  Overall
#18  Relational DBMS
Score0.22
Rank#323  Overall
#28  Graph DBMS
Websitegithub.com/­Softmotions/­ejdbwww.symas.com/­symas-embedded-database-lmdbazure.microsoft.com/­services/­synapse-analyticsterminusdb.com
Technical documentationgithub.com/­Softmotions/­ejdb/­blob/­master/­README.mdwww.lmdb.tech/­docdocs.microsoft.com/­azure/­synapse-analyticsterminusdb.github.io/­terminusdb/­#
DeveloperSoftmotionsSymasMicrosoftDataChemist Ltd.
Initial release2012201120162018
Current release0.9.32, January 202411.0.0, January 2023
License infoCommercial or Open SourceOpen Source infoGPLv2Open SourcecommercialOpen Source infoGPL V3
Cloud-based only infoOnly available as a cloud servicenonoyesno
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageCCC++Prolog, Rust
Server operating systemsserver-lessLinux
Unix
Windows
hostedLinux
Data schemeschema-freeschema-freeyesyes
Typing infopredefined data types such as float or dateyes infostring, integer, double, bool, date, object_idyesyes
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.nonono
Secondary indexesnonoyes
SQL infoSupport of SQLnonoyesSQL-like query language (WOQL)
APIs and other access methodsin-process shared libraryADO.NET
JDBC
ODBC
OWL
RESTful HTTP API
WOQL (Web Object Query Language)
Supported programming languagesActionscript
C
C#
C++
Go
Java
JavaScript (Node.js)
Lua
Objective-C
Pike
Python
Ruby
.Net
C
C++
Clojure
Go
Haskell
Java
JavaScript (Node.js)
Lisp
Lua
MatLab
Nim
Objective C
OCaml
Perl
PHP
Python
R
Ruby
Rust
Swift
Tcl
C#
Java
PHP
JavaScript
Python
Server-side scripts infoStored proceduresnonoTransact SQLyes
Triggersnononoyes
Partitioning methods infoMethods for storing different data on different nodesnonenoneSharding, horizontal partitioningGraph Partitioning
Replication methods infoMethods for redundantly storing data on multiple nodesnonenoneyesJournaling Streams
MapReduce infoOffers an API for user-defined Map/Reduce methodsnononono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyImmediate Consistency
Foreign keys infoReferential integrityno infotypically not needed, however similar functionality with collection joins possiblenono infodocs.microsoft.com/­en-us/­azure/­synapse-analytics/­sql-data-warehouse/­sql-data-warehouse-table-constraintsyes
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datanoACIDACIDACID
Concurrency infoSupport for concurrent manipulation of datayes infoRead/Write Lockingyesyesyes
Durability infoSupport for making data persistentyesyesyesyes infoin-memory journaling
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yes
User concepts infoAccess controlnonoyesRole-based access control

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More resources
EJDBLMDBMicrosoft Azure Synapse Analytics infopreviously named Azure SQL Data WarehouseTerminusDB infoformer name was DataChemist
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