Oracle Database 23c Free – Developer Release is the first release of the next-generation Oracle Database, allowing developers a head-start on building applications with some of the new 23c features.
Here are some highlights.
JSON Relational Duality
Data can be transparently accessed and updated as either JSON documents or relational tables.
Developers benefit from the strengths of both, which are simpler and more powerful than Object Relational Mapping (ORM).
Operational Property Graphs in SQL
Developers can now build real-time graph analysis applications against operational data directly in the Oracle Database, utilizing its industry leading security, high availability and performance capabilities.
See Property Graph: Native Representation of Graphs in Oracle Database.
Alongside Oracle’s already comprehensive support for microservices, new functionality makes it simpler to implement cross-service transactions.
Lock-Free Column Value Reservations
Lock-free column value reservations allow applications to reserve part of a value in a column without locking the row; for example, reserve part of a bank account balance or reserve an item in inventory without locking out all other operations on the bank account or item.
Kafka APIs for TxEventQ
Kafka applications can now run directly against the Oracle Database with minimal code changes, leveraging high performance Transaction Event Queues (TxEventQ).
Application Usage Domains
Application Usage Domains allow developers to declare the intended usage of data (columns) in a centralized and light-weight manner. For example, declare a column holds an email, URL, password, currency, etc. Apps can use Application Usage Domains to automatically generate code or verify values.
Many Datatype and SQL Enhancements
The following are among the many datatype and SQL enhancements:
Up to 4096 Columns per Table
Database tables now support up to 4096 columns. This feature simplifies the development of applications needing large numbers of attributes, such as ML and IoT.
See Wide Tables.
Improved Machine Learning Algorithms
New improvements to Oracle In-Database Machine Learning algorithms make it simpler to categorize text and data while offering better performance and flexibility.
See Machine Learning.
System privileges can now be granted at the schema level. This feature simplifies the privilege management process and as a result, makes it easy to secure databases.
A new role allows administrators to quickly assign developers only the privileges they need to design, build, and deploy applications for the Oracle Database.
Included in Oracle Database, SQL Firewall provides real-time protection against common database attacks by monitoring and blocking unauthorized SQL and SQL injection attacks, no matter the SQL execution path.
Azure AD OAuth2 Integration
New functionality enables single sign-on to Oracle Database service instances or on-premises Oracle Databases from Microsoft Azure Cloud.
See JDBC Support for OAuth 2.0 Including OCI IAM and Azure AD.