In 4D applications, the data file is important, so all the activity of the database is stored in the log file. As you all know, the log file is a vital element for the restoration of your database following an unfortunate contingency. However all the information on the database activity may also be useful for analysis. For example, to check the activity on a table, to see the changes made by a user, and to follow a record’s history.
The WEB Session commands have been adapted to 4D Mobile session. Now, you can save the results of a query or an inter-process variable related to a given 4D Mobile session. For example, with new handling of 4D Mobile sessions, you can manage the cart of your users.
This feature is useful when you need to perform, from within a transaction, certain operations that do not need to be executed under the control of this transaction.
Today, merged applications save many information in the application package and also in the compiled file (.4DC). Besides preventing to create read-only applications, saving information in the application package has another annoying consequence: the information gets lost when you update the application.
In 4D v15 R3, the way to detect duplicates in fields declared as unique has been enhanced so that users have a mean to know which are the offending fields.
What’s new? All the offending fields are now displayed in an error message or in the log.
Duplicates can be reported through 2 different ways:
- when 4D needs to create indexes on a database with offending fields.
- during an MSC Verify scan.
In 4D v15 R3, the algorithm of the REPLACE STRING command has been enhanced to make replacements on large amounts of data faster. In our tests replacing 32,000 occurrences, the new algorithm makes the command an average of 4000 times faster than the old one.
With 4D v15 R4, it is now possible to design your own 4D Write Pro interface with dedicated commands. There are a lot of new commands for manipulating attributes for selections, paragraphs, images inside a document, or the document itself.
I’m pleased to present you two new features for 4D Write Pro available with 4D v15 R3.
It’s now possible:
- To print a form containing a 4D Write Pro area.
- To store 4D Write Pro documents in the database directly in an object field.
With 4D v15 R2 is available the first preview version of the 4D Developer Edition 64-bit Mac & Windows. This preview includes dialogs that have been fully rewritten, first to migrate to 64-bit but also to provide you with modern end-user dialogs with an improved user experience.
The GRAPH command has been totally refactored to ease the use and customization of your graphs. Moreover it has been enhanced to give you the full control on the various graph properties.
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