Compared to its predecessor, ConceptBase V7.0 is significantly improved with respect to functionality, efficiency and stability. Active rules have been extended to allow any number of free variables. Their net effect is now also submitted to the integrity checker. Besides Linux, Solaris and Windows, we now also support Linux64 (64 bit address space) and Mac OS-X. The graph editor has been revised to support zooming and some auto-layout functions. Efficiency has again been improved significantly compared to the earlier release. Some transaction types enjoy only a marginal speed-up of around 10% while others are now between three and 25 times faster than before. The meta formula compiler covers more cases. Integrity constraints can now be accompanied by customizable error messages. Query calls can now be nested, i.e. the parameter of a query can be another query call with parameters. This is useful in particular for building nested functional expressions. The release notes to ConceptBase 7.0 lists all major changes and issues.
We tried hard to guarantee maximum compatibility to older versions of ConceptBase. Some older syntax variants like literals not enclosed in parantheses are now disallowed. The release notes to ConceptBase 7.0 list the stricter rules and issues. Please follow the instructions in these notes when loading your old Telos models into the new ConceptBase server.
The added functionality did not increase the memory footprint of the system. It still has about the same footprint as it used to be 10 years ago. You can easily install the complete system for all supported platforms on a 32 MB memory stick.