DBMS > Amazon CloudSearch vs. H2
System Properties Comparison Amazon CloudSearch vs. H2
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|Editorial information provided by DB-Engines
|Amazon CloudSearch Xexclude from comparison
|H2 Xexclude from comparison
|A hosted search engine service by Amazon with the data stored in Amazons cloud
|Full-featured RDBMS with a small footprint, either embedded into a Java application or used as a database server.
|Primary database model
|Secondary database models
|2.2.220, July 2023
|License Commercial or Open Source
|Open Source dual-licence (Mozilla public license, Eclipse public license)
|Cloud-based only Only available as a cloud service
|DBaaS offerings (sponsored links) Database as a Service
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|Server operating systems
|All OS with a Java VM
|Typing predefined data types such as float or date
|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 all search fields are automatically indexed
|SQL Support of SQL
|APIs and other access methods
|Supported programming languages
|Server-side scripts Stored procedures
|Java Stored Procedures and User-Defined Functions
|Partitioning methods Methods for storing different data on different nodes
|yes automatic partitioning across Amazon Search Instance as required
|Replication methods Methods for redundantly storing data on multiple nodes
|yes managed transparently by AWS
|With clustering: 2 database servers on different computers operate on identical copies of a database
|MapReduce Offers an API for user-defined Map/Reduce methods
|Consistency concepts Methods to ensure consistency in a distributed system
|Foreign keys Referential integrity
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data
|Concurrency Support for concurrent manipulation of data
|yes, multi-version concurrency control (MVCC)
|Durability Support for making data persistent
|In-memory capabilities Is there an option to define some or all structures to be held in-memory only.
|User concepts Access control
|authentication via encrypted signatures
|fine grained access rights according to SQL-standard
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|DB-Engines blog posts
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