DBMS > Google Cloud Datastore
Google Cloud Datastore System Properties
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|Editorial information provided by DB-Engines|
|Name||Google Cloud Datastore|
|Description||Automatically scaling NoSQL Database as a Service (DBaaS) on the Google Cloud Platform|
|Primary database model||Document store|
|License Commercial or Open Source||commercial|
|Cloud-based Only available as a cloud service||yes|
|Server operating systems||hosted|
|Typing predefined data types such as float or date||yes, details here|
|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 (almost entire) SQL standard (DML, DDL and DCL statements)||no GQL, a SQL-like query language is supported|
|APIs and other access methods||gRPC (using protocol buffers) API|
RESTful HTTP/JSON API
|Supported programming languages||.Net|
|Server-side scripts Stored procedures||using Google App Engine|
|Triggers||Callbacks using the Google Apps Engine|
|Partitioning methods Methods for storing different data on different nodes||Sharding|
|Replication methods Methods for redundantly storing data on multiple nodes||Multi-Master replication using Paxos|
|MapReduce Offers an API for user-defined Map/Reduce methods||yes using Google Cloud Dataflow|
|Consistency concepts Methods to ensure consistency in a distributed system||Immediate Consistency or Eventual Consistency depending on type of query and configuration Strong Consistency is default for entity lookups and queries within an Entity Group (but can instead be made eventually consistent). Other queries are always eventual consistent.|
|Foreign keys Referential integrity||yes via ReferenceProperties or Ancestor paths|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||ACID Serializable Isolation within Transactions, Read Committed outside of Transactions|
|Concurrency Support for concurrent manipulation of data||yes|
|Durability Support for making data persistent||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|
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|Google Cloud Datastore|
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