4D AI: Sorting Query Results by Vector Similarity
In the Semantic search: querying by vector similarity post, we introduced how to query entities using vector similarity, a powerful way to find the mo...
January 20, 2026
1 min read
ORDA
Use Object Relational Data Access to model entities and relations with an object oriented approach. Centralize business logic inside dataclasses, apply lifecycle events and filters, and keep data rules consistent and scalable.
ORDA – Handle an event-driven logic during database operations
This feature keeps going on with a new paradigm: handle data in an event-driven way. The 4D 21 provides a complete series of events related to databas...
November 28, 2025
1 min read
ORDA – Constructor and touched event – Detailed behaviour through a network
In this previous blog post, you discovered that ORDA entities can now have a constructor, allowing entity instantiation to follow a complete object-or...
August 25, 2025
1 min read
Touched event
ORDA is a core long-term feature that opens up a world of new possibilities in 4D. We keep enhancing ORDA to help you write powerful code. As a resul...
July 16, 2025
1 min read
ORDA – Get started with the entity constructor
The 4D language supports the concept of classes and thus, the concept of constructor. On the another hand, the ORDA abstraction layer, through Data M...
July 15, 2025
1 min read
Restrict data according to privileges or information saved in session storage
In modern application development, securing and finely managing data access are essential. Thanks to the restrict event in 4D, it is possible to dynam...
April 9, 2025
1 min read
Permissions: Inspect Session Privileges for Easy Debugging
Today, you can benefit from a powerful feature to filter access to data, which is essential for preventing malicious access to your application. This...
July 19, 2024
1 min read
ORDA – Say Goodbye to Empty Spaces in Your Entity Selections
We've all been there. You build a beautiful interface that displays an entity selection for users. They can drop entities to refine their choices, but...
July 18, 2024
1 min read
ORDA – Restrict Data to Relevant Criteria
In 4D 19 R8, we introduced a robust permission system, granting you granular control over user access to your data. This system protects your data dep...
May 3, 2024
1 min read
4D keeps your selections of records consistent regarding deletion of records
Deletion of data should be handled with care. To prevent issues, we can use transactions or rely on backups and logs. Some improvements have been mad...
February 27, 2024
1 min read