DBMS > Amazon CloudSearch vs. openGauss
System Properties Comparison Amazon CloudSearch vs. openGauss
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|Editorial information provided by DB-Engines|
|Name||Amazon CloudSearch Xexclude from comparison||openGauss Xexclude from comparison|
|Description||A hosted search engine service by Amazon with the data stored in Amazons cloud||An enterprise-class RDBMS compatible with high-performance, high-availability and high-performance originally developed by Huawei|
|Primary database model||Search engine||Relational DBMS|
|Secondary database models||Document store|
|Developer||Amazon||Huawei and openGauss community|
|Current release||3.0, March 2022|
|License Commercial or Open Source||commercial||Open Source|
|Cloud-based only Only available as a cloud service||yes||no|
|DBaaS offerings (sponsored links) Database as a Service|
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|Implementation language||C, C++, Java|
|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|
|Secondary indexes||yes all search fields are automatically indexed||yes|
|SQL Support of SQL||no||ANSI SQL 2011|
|APIs and other access methods||HTTP API||JDBC|
|Supported programming languages||C|
|Server-side scripts Stored procedures||no||yes|
|Partitioning methods Methods for storing different data on different nodes||yes automatic partitioning across Amazon Search Instance as required||horizontal partitioning (by range, list and hash)|
|Replication methods Methods for redundantly storing data on multiple nodes||yes managed transparently by AWS||Source-replica replication|
|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||yes|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||no||ACID|
|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||authentication via encrypted signatures||Access rights for users, groups and roles according to SQL-standard|
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