DBMS > EJDB vs. LevelDB
System Properties Comparison EJDB vs. LevelDB
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|Editorial information provided by DB-Engines|
|Name||EJDB Xexclude from comparison||LevelDB Xexclude from comparison|
|Description||Embeddable document-store database library with JSON representation of queries (in MongoDB style)||Embeddable fast key-value storage library that provides an ordered mapping from string keys to string values|
|Primary database model||Document store||Key-value store|
|Current release||1.23, February 2021|
|License Commercial or Open Source||Open Source GPLv2||Open Source BSD|
|Cloud-based only Only available as a cloud service||no||no|
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|Server operating systems||server-less||Illumos|
|Typing predefined data types such as float or date||yes string, integer, double, bool, date, object_id||no|
|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.||no|
|SQL Support of SQL||no||no|
|APIs and other access methods||in-process shared library|
|Supported programming languages||Actionscript|
Java 3rd party binding
Python 3rd party binding
|Server-side scripts Stored procedures||no||no|
|Partitioning methods Methods for storing different data on different nodes||none||none|
|Replication methods Methods for redundantly storing data on multiple nodes||none||none|
|MapReduce Offers an API for user-defined Map/Reduce methods||no||no|
|Consistency concepts Methods to ensure consistency in a distributed system||Immediate Consistency|
|Foreign keys Referential integrity||no typically not needed, however similar functionality with collection joins possible||no|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||no||no|
|Concurrency Support for concurrent manipulation of data||yes Read/Write Locking||yes|
|Durability Support for making data persistent||yes||yes with automatic compression on writes|
|User concepts Access control||no||no|
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