DBMS > Firebase Realtime Database vs. Impala
System Properties Comparison Firebase Realtime Database vs. Impala
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|Editorial information provided by DB-Engines|
|Name||Firebase Realtime Database Xexclude from comparison||Impala Xexclude from comparison|
|Primary database model||Document store||Relational DBMS|
|Secondary database models||Document store|
|Developer||Google acquired by Google 2014||Cloudera|
|Current release||4.1.0, June 2022|
|License Commercial or Open Source||commercial||Open Source Apache Version 2|
|Cloud-based only Only available as a cloud service||yes||no|
|DBaaS offerings (sponsored links) Database as a Service|
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|Server operating systems||hosted||Linux|
|Typing predefined data types such as float or date||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.||no||no|
|SQL Support of SQL||no||SQL-like DML and DDL statements|
|APIs and other access methods||Android|
RESTful HTTP API
|Supported programming languages||Java|
|All languages supporting JDBC/ODBC|
|Server-side scripts Stored procedures||limited functionality with using 'rules'||yes user defined functions and integration of map-reduce|
|Triggers||Callbacks are triggered when data changes||no|
|Partitioning methods Methods for storing different data on different nodes||Sharding|
|Replication methods Methods for redundantly storing data on multiple nodes||selectable replication factor|
|MapReduce Offers an API for user-defined Map/Reduce methods||no||yes query execution via MapReduce|
|Consistency concepts Methods to ensure consistency in a distributed system||Eventual Consistency if the client is offline|
Immediate Consistency if the client is online
|Foreign keys Referential integrity||no||no|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||yes||no|
|Concurrency Support for concurrent manipulation of data||yes||yes|
|Durability Support for making data persistent||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||yes, based on authentication and database rules||Access rights for users, groups and roles based on Apache Sentry and Kerberos|
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|Firebase Realtime Database||Impala|
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