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DBMS > Postgres-XL vs. RocksDB vs. Snowflake

System Properties Comparison Postgres-XL vs. RocksDB vs. Snowflake

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Editorial information provided by DB-Engines
NamePostgres-XL  Xexclude from comparisonRocksDB  Xexclude from comparisonSnowflake  Xexclude from comparison
DescriptionBased on PostgreSQL enhanced with MPP and write-scale-out cluster featuresEmbeddable persistent key-value store optimized for fast storage (flash and RAM)Cloud-based data warehousing service for structured and semi-structured data
Primary database modelRelational DBMSKey-value storeRelational DBMS
Secondary database modelsDocument store
Spatial DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.52
Rank#256  Overall
#117  Relational DBMS
Score4.00
Rank#84  Overall
#11  Key-value stores
Score123.20
Rank#9  Overall
#6  Relational DBMS
Websitewww.postgres-xl.orgrocksdb.orgwww.snowflake.com
Technical documentationwww.postgres-xl.org/­documentationgithub.com/­facebook/­rocksdb/­wikidocs.snowflake.net/­manuals/­index.html
DeveloperFacebook, Inc.Snowflake Computing Inc.
Initial release2014 infosince 2012, originally named StormDB20132014
Current release10 R1, October 20188.11.4, April 2024
License infoCommercial or Open SourceOpen Source infoMozilla public licenseOpen Source infoBSDcommercial
Cloud-based only infoOnly available as a cloud servicenonoyes
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageCC++
Server operating systemsLinux
macOS
Linuxhosted
Data schemeyesschema-freeyes infosupport of semi-structured data formats (JSON, XML, Avro)
Typing infopredefined data types such as float or dateyesnoyes
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.yes infoXML type, but no XML query functionalitynoyes
Secondary indexesyesno
SQL infoSupport of SQLyes infodistributed, parallel query executionnoyes
APIs and other access methodsADO.NET
JDBC
native C library
ODBC
streaming API for large objects
C++ API
Java API
CLI Client
JDBC
ODBC
Supported programming languages.Net
C
C++
Delphi
Erlang
Java
JavaScript (Node.js)
Perl
PHP
Python
Tcl
C
C++
Go
Java
Perl
Python
Ruby
JavaScript (Node.js)
Python
Server-side scripts infoStored proceduresuser defined functionsnouser defined functions
Triggersyesno infosimilar concept for controling cloud resources
Partitioning methods infoMethods for storing different data on different nodeshorizontal partitioninghorizontal partitioningyes
Replication methods infoMethods for redundantly storing data on multiple nodesyesyes
MapReduce infoOffers an API for user-defined Map/Reduce methodsnonono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyImmediate Consistency
Foreign keys infoReferential integrityyesnoyes
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACID infoMVCCyesACID
Concurrency infoSupport for concurrent manipulation of datayesyesyes
Durability infoSupport for making data persistentyesyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.noyesno
User concepts infoAccess controlfine grained access rights according to SQL-standardnoUsers with fine-grained authorization concept, user roles and pluggable authentication

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Related products and services
3rd partiesSpeedb: A high performance RocksDB-compliant key-value store optimized for write-intensive workloads.
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CData: Connect to Big Data & NoSQL through standard Drivers.
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More resources
Postgres-XLRocksDBSnowflake
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