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An aggregate is a type of summary used in dimensional models of data warehouses to shorten the time it takes to provide answers to typical queries on large sets of data. The reason why aggregates can make such a dramatic increase in the performance of a data warehouse is the reduction of the number of rows to be accessed when responding to a query.
Database name Language implemented in Notes Apache Doris Java & C++ Open source (since 2017), database for high-concurrency point queries and high-throughput analysis. Apache Druid: Java Started in 2011 for low-latency massive ingestion and queries. Support and extensions available from Imply Data. Apache Kudu: C++
Pandas (styled as pandas) is a software library written for the Python programming language for data manipulation and analysis. In particular, it offers data structures and operations for manipulating numerical tables and time series. It is free software released under the three-clause BSD license. [2]
Oracle Spatial and Graph, formerly Oracle Spatial, is a free option component of the Oracle Database.The spatial features in Oracle Spatial and Graph aid users in managing geographic and location-data in a native type within an Oracle database, potentially supporting a wide range of applications — from automated mapping, facilities management, and geographic information systems (), to ...
Materialized views that store data based on remote tables were also known as snapshots [5] (deprecated Oracle terminology). In any database management system following the relational model, a view is a virtual table representing the result of a database query. Whenever a query or an update addresses an ordinary view's virtual table, the DBMS ...
APEX is a feature of the Oracle Database. It is a part of Oracle Cloud within Autonomous Database Cloud Services and the stand-alone APEX Application Development service. [3] Oracle APEX has had name changes since its creation in 2000, including: Flows [4] Oracle Platform [5] Project Marvel; HTML DB [6] Application Express (APEX) aka Oracle ...
PGQL [33] is a language designed and implemented by Oracle Inc., but made available as an open source specification, [34] along with JVM parsing software. [35] PGQL combines familiar SQL SELECT syntax including SQL expressions and result ordering and aggregation with a pattern matching language very similar to that of Cypher.
Oracle NoSQL Database Cloud Service is a managed cloud service for applications that require low latency, flexible data models, and elastic scaling for dynamic workloads. Developers focus on application development and data store requirements rather than managing back-end servers, storage expansion, cluster deployments, topology, software ...