DBMS > Alibaba Cloud AnalyticDB for PostgreSQL vs. BigObject vs. EJDB vs. IBM Db2 Event Store vs. Lovefield

System Properties Comparison Alibaba Cloud AnalyticDB for PostgreSQL vs. BigObject vs. EJDB vs. IBM Db2 Event Store vs. Lovefield

Editorial information provided by DB-Engines
Name	Alibaba Cloud AnalyticDB for PostgreSQL former name was HybridDB  Xexclude from comparison	BigObject  Xexclude from comparison	EJDB  Xexclude from comparison	IBM Db2 Event Store  Xexclude from comparison	Lovefield  Xexclude from comparison
Description	An online MPP (Massively Parallel Processing) data warehousing service based on Greenplum	Analytic DBMS for real-time computations and queries	Embeddable document-store database library with JSON representation of queries (in MongoDB style)	Distributed Event Store optimized for Internet of Things use cases	Embeddable relational database for web apps written in pure JavaScript
Primary database model	Relational DBMS	Relational DBMS a hierachical model (tree) can be imposed	Document store	Event Store Time Series DBMS	Relational DBMS
DB-Engines Ranking measures the popularity of database management systems Trend Chart	Score 0.76 Rank #220   Overall #102   Relational DBMS	Score 0.19 Rank #329   Overall #146   Relational DBMS	Score 0.31 Rank #296   Overall #44   Document stores	Score 0.27 Rank #309   Overall #2   Event Stores #28   Time Series DBMS	Score 0.33 Rank #286   Overall #131   Relational DBMS
Website	www.alibabacloud.com/­product/­hybriddb-postgresql	bigobject.io	github.com/­Softmotions/­ejdb	www.ibm.com/­products/­db2-event-store	google.github.io/­lovefield
Technical documentation	www.alibabacloud.com/­help/­en/­analyticdb-for-postgresql/­latest/­product-introduction-overview	docs.bigobject.io	github.com/­Softmotions/­ejdb/­blob/­master/­README.md	www.ibm.com/­docs/­en/­db2-event-store	github.com/­google/­lovefield/­blob/­master/­docs/­spec_index.md
Developer	Alibaba / Pivotal Software Inc. / PostgreSQL Global Development Group	BigObject, Inc.	Softmotions	IBM	Google
Initial release	2016	2015	2012	2017	2014
Current release				2.0	2.1.12, February 2017
License Commercial or Open Source	commercial	commercial free community edition available	Open Source GPLv2	commercial free developer edition available	Open Source Apache 2.0
Cloud-based only Only available as a cloud service	yes	no	no	no	no
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Implementation language			C	C and C++	JavaScript
Server operating systems	hosted	Linux distributed as a docker-image OS X distributed as a docker-image (boot2docker) Windows distributed as a docker-image (boot2docker)	server-less	Linux Linux, macOS, Windows for the developer addition	server-less, requires a JavaScript environment (browser, Node.js) tested with Chrome, Firefox, IE, Safari
Data scheme	yes	yes	schema-free	yes	yes
Typing predefined data types such as float or date	yes	yes	yes string, integer, double, bool, date, object_id	yes	yes
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.	yes	no		no	no
Secondary indexes	yes	yes	no	no	yes
SQL Support of SQL	yes	SQL-like DML and DDL statements	no	yes through the embedded Spark runtime	SQL-like query language via JavaScript builder pattern
APIs and other access methods	JDBC ODBC	fluentd ODBC RESTful HTTP API	in-process shared library	ADO.NET DB2 Connect JDBC ODBC RESTful HTTP API
Supported programming languages	C Java Perl Python R		Actionscript C C# C++ Go Java JavaScript (Node.js) Lua Objective-C Pike Python Ruby	C C# C++ Cobol Delphi Fortran Go Java JavaScript (Node.js) Perl PHP Python R Ruby Scala Visual Basic	JavaScript
Server-side scripts Stored procedures	yes	Lua	no	yes	no
Triggers	yes	no	no	no	Using read-only observers
Partitioning methods Methods for storing different data on different nodes	Sharding Implicit feature of the cloud service	none	none	Sharding	none
Replication methods Methods for redundantly storing data on multiple nodes	yes Implicit feature of the cloud service	none	none	Active-active shard replication	none
MapReduce Offers an API for user-defined Map/Reduce methods	no	no	no	no	no
Consistency concepts Methods to ensure consistency in a distributed system	Immediate Consistency	none		Eventual Consistency
Foreign keys Referential integrity	yes	yes automatically between fact table and dimension tables	no typically not needed, however similar functionality with collection joins possible	no	yes
Transaction concepts Support to ensure data integrity after non-atomic manipulations of data	ACID	no	no	no	ACID
Concurrency Support for concurrent manipulation of data	yes	yes Read/write lock on objects (tables, trees)	yes Read/Write Locking	No - written data is immutable	yes
Durability Support for making data persistent	yes	yes	yes	Yes - Synchronous writes to local disk combined with replication and asynchronous writes in parquet format to permanent shared storage	yes, by using IndexedDB or the cloud service Firebase Realtime Database
In-memory capabilities Is there an option to define some or all structures to be held in-memory only.	no	yes		yes	yes using MemoryDB
User concepts Access control	fine grained access rights according to SQL-standard	no	no	fine grained access rights according to SQL-standard	no
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More resources
	Alibaba Cloud AnalyticDB for PostgreSQL former name was HybridDB	BigObject	EJDB	IBM Db2 Event Store	Lovefield
Recent citations in the news	Alibaba Cloud upgrades AnalyticDB with vector database engine 25 July 2023, CloudTech News Two Critical Flaws Found in Alibaba Cloud's PostgreSQL Databases 20 April 2023, The Hacker News Accidental ‘write’ Permissions In Alibaba PostgreSQL Let Attackers Access Sensitive Data 22 April 2023, GBHackers Two critical vulnerabilities spotted in Alibaba Cloud's PostgreSQL databases 21 April 2023, TEISS Alibaba Cloud ignites AI innovation in Singapore with recent hackathon | KrASIA 27 March 2024, KrASIA provided by Google News			Advancements in streaming data storage, real-time analysis and machine learning 25 July 2019, ibm.com How IBM Is Turning Db2 into an ‘AI Database’ 3 June 2019, Datanami Best cloud databases of 2022 4 October 2022, ITPro Why a robust data management strategy is essential today | IBM HDM 19 September 2019, Express Computer provided by Google News

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