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
Language
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
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
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
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
ORDA: Assigning a path to a blob or picture attribute
Non-ORDA database commands allowed you to put images and blobs outside your data file thanks to the SET EXTERNAL DATA PATH command. This command is no...
January 8, 2024
1 min read
Meet the Improved Distinct Function
Retrieving the list of unique data elements is always helpful when manipulating data. In some cases, retrieving the number of occurrences of each valu...
April 26, 2023
1 min read
ORDA – Say Hello to Aliases
4D v19 R4 is shipped with a new ORDA concept: Aliases. They are the logical and complementary continuation of computed attributes. This blog post exp...
January 12, 2022
1 min read
ORDA: Thoroughly compare two entity selections
Since ORDA allows you to work with several entity selections simultaneously, we're sure you take advantage of this by passing entity selections as a p...
October 8, 2021
1 min read