What Machine Learning capabilities/algorithms are active in Autonomous Databases?
Autonomous Databases comes with over 30 machine learning algorithms implemented as SQL functions that leverage the strengths of the Oracle Autonomous Database. Oracle Machine Learning algorithms perform all processing inside the Autonomous Database and can mine data tables and views, star schema data including transactional data, aggregations, unstructured data i.e. CLOB data type (using Oracle Text to extract tokens) and spatial data.
Oracle Machine Learning for SQL functions takes full advantage of database parallelism for model build and model apply and honor all data and user privileges and security schemes. Data scientists can collaborate to build, evaluate and deploy machine learning models using Zeppelin based Oracle Machine Learning Notebooks. Oracle Machine Learning models can be included in SQL queries, BI dashboards and embedded in real-time applications.
This is a nice doc with more info about it: https://www.oracle.com/technetwork/database/options/advanced-analytics/oml19c-white-paper-5601561.pdf