DBMS > Teradata Aster
Teradata Aster System Properties
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|Editorial information provided by DB-Engines|
|Description||Platform for big data analytics on multistructured data sources and types|
|Database model||Relational DBMS|
|License Commercial or Open Source||commercial|
|Cloud-based Only available as a cloud service||no|
|Server operating systems||Linux|
|Data scheme||Flexible Schema (defined schema, partial schema, schema free) defined schema within the relational store; partial schema or schema free in the Aster File Store|
|Typing predefined data types such as float or date||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.||yes in Aster File Store|
|SQL Support of (almost entire) SQL standard (DML, DDL and DCL statements)||yes|
|APIs and other access methods||OLE DB|
|Supported programming languages||C|
|Server-side scripts Stored procedures||R packages|
|Partitioning methods Methods for storing different data on different nodes||Sharding|
|Replication methods Methods for redundantly storing data on multiple nodes||yes Dimension tables are replicated across all nodes in the cluster. The number of replicas for the file store can be configured.|
|MapReduce Offers an API for user-defined Map/Reduce methods||yes SQL Map-Reduce Framework|
|Consistency concepts Methods to ensure consistency in a distributed system||Immediate Consistency or Eventual Consistency depending on configuration|
|Foreign keys Referential integrity||no|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||ACID|
|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||fine grained access rights according to SQL-standard|
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