DBMS > EJDB vs. InfinityDB vs. Sqrrl
System Properties Comparison EJDB vs. InfinityDB vs. Sqrrl
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|Editorial information provided by DB-Engines|
|Name||EJDB Xexclude from comparison||InfinityDB Xexclude from comparison||Sqrrl Xexclude from comparison|
|Sqrrl has been acquired by Amazon and became a part of Amazon Web Services. It has been removed from the DB-Engines ranking.|
|Description||Embeddable document-store database library with JSON representation of queries (in MongoDB style)||A Java embedded Key-Value Store which extends the Java Map interface||Adaptable, secure NoSQL built on Apache Accumulo|
|Primary database model||Document store||Key-value store||Document store|
Wide column store
|Developer||Softmotions||Boiler Bay Inc.||Amazon originally Sqrrl Data, Inc.|
|License Commercial or Open Source||Open Source GPLv2||commercial||commercial|
|Cloud-based only Only available as a cloud service||no||no||no|
|DBaaS offerings (sponsored links) Database as a Service|
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|Server operating systems||server-less||All OS with a Java VM||Linux|
|Data scheme||schema-free||yes nested virtual Java Maps, multi-value, logical â€˜tuple spaceâ€™ runtime Schema upgrade||schema-free|
|Typing predefined data types such as float or date||yes string, integer, double, bool, date, object_id||yes all Java primitives, Date, CLOB, BLOB, huge sparse arrays||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.||no|
|Secondary indexes||no||no manual creation possible, using inversions based on multi-value capability||yes|
|SQL Support of SQL||no||no||no|
|APIs and other access methods||in-process shared library||Access via java.util.concurrent.ConcurrentNavigableMap Interface|
Proprietary API to InfinityDB ItemSpace (boilerbay.com/docs/ItemSpaceDataStructures.htm)
RESTful HTTP API
|Supported programming languages||Actionscript|
C using GLib
|Server-side scripts Stored procedures||no||no||no|
|Partitioning methods Methods for storing different data on different nodes||none||none||Sharding making use of Hadoop|
|Replication methods Methods for redundantly storing data on multiple nodes||none||none||selectable replication factor making use of Hadoop|
|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 READ-COMMITTED or SERIALIZED||Immediate Consistency Document store kept consistent with combination of global timestamping, row-level transactions, and server-side consistency resolution.|
|Foreign keys Referential integrity||no typically not needed, however similar functionality with collection joins possible||no manual creation possible, using inversions based on multi-value capability||no|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||no||ACID Optimistic locking for transactions; no isolation for bulk loads||Atomic updates per row, document, or graph entity|
|Concurrency Support for concurrent manipulation of data||yes Read/Write Locking||yes||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|
|User concepts Access control||no||no||Cell-level Security, Data-Centric Security, Role-Based Access Control (RBAC), Attribute-Based Access Control (ABAC)|
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