DBMS > Alibaba Cloud AnalyticDB for PostgreSQL vs. EJDB vs. EsgynDB
System Properties Comparison Alibaba Cloud AnalyticDB for PostgreSQL vs. EJDB vs. EsgynDB
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|Editorial information provided by DB-Engines|
|Name||Alibaba Cloud AnalyticDB for PostgreSQL former name was HybridDB Xexclude from comparison||EJDB Xexclude from comparison||EsgynDB Xexclude from comparison|
|Description||An online MPP (Massively Parallel Processing) data warehousing service based on Greenplum||Embeddable document-store database library with JSON representation of queries (in MongoDB style)||Enterprise-class SQL-on-Hadoop solution, powered by Apache Trafodion|
|Primary database model||Relational DBMS||Document store||Relational DBMS|
|Developer||Alibaba / Pivotal Software Inc. / PostgreSQL Global Development Group||Softmotions||Esgyn|
|License Commercial or Open Source||commercial||Open Source GPLv2||commercial|
|Cloud-based only Only available as a cloud service||yes||no||no|
|DBaaS offerings (sponsored links) Database as a Service|
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|Implementation language||C||C++, Java|
|Server operating systems||hosted||server-less||Linux|
|Typing predefined data types such as float or date||yes||yes string, integer, double, bool, date, object_id||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|
|SQL Support of SQL||yes||no||yes|
|APIs and other access methods||JDBC|
|in-process shared library||ADO.NET|
|Supported programming languages||C|
|All languages supporting JDBC/ODBC/ADO.Net|
|Server-side scripts Stored procedures||yes||no||Java Stored Procedures|
|Partitioning methods Methods for storing different data on different nodes||Sharding Implicit feature of the cloud service||none||Sharding|
|Replication methods Methods for redundantly storing data on multiple nodes||yes Implicit feature of the cloud service||none||Multi-source replication between multi datacenters|
|MapReduce Offers an API for user-defined Map/Reduce methods||no||no||yes|
|Consistency concepts Methods to ensure consistency in a distributed system||Immediate Consistency||Immediate Consistency|
|Foreign keys Referential integrity||yes||no typically not needed, however similar functionality with collection joins possible||yes|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||ACID||no||ACID|
|Concurrency Support for concurrent manipulation of data||yes||yes Read/Write Locking||yes|
|Durability Support for making data persistent||yes||yes||yes|
|In-memory capabilities Is there an option to define some or all structures to be held in-memory only.||no||no|
|User concepts Access control||fine grained access rights according to SQL-standard||no||fine grained access rights according to SQL-standard|
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|Alibaba Cloud AnalyticDB for PostgreSQL former name was HybridDB||EJDB||EsgynDB|
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