Hi Mubashir, > ... researching on using databases to implement network control infrastructure. ... > Are there any postgres extensions/features that implement conditional tables
like this? https://dl.acm.org/doi/10.1145/3472716.3472848 "Sarasate: a strong representation system for networking policies" *"Policy information in computer networking today is hard to manage. This is in sharp contrast to relational data structured in a database that allows easy access. In this demonstration, we ask why cannot (or how can) turn network policies into relational data. Our key observation is that oftentimes a policy does not prescribe a single ``definite'' network state, but rather is an ``incomplete'' description of all the legitimate network states. Based on this idea, we adopt conditional tables and the usual SQL interface (a relational structure developed for incomplete database) as a means to represent and query sets of network states in exactly the same way as a single definite network snapshot. More importantly, like relational tables that improve data productivity and innovation, relational policies allow us to extend a rich set of data mediating methods to address the networking problem of coordinating policies in a distributed environment."* As I see the source code is: https://github.com/ravel-net/Faure/blob/main/apps/README_sarasate.md And it is a* [ PL/python3u extension + Z3-solver (Z3 API in Python) ]* solution. Probably easy to reimplement in - PL/Julia ( https://gitlab.com/pljulia/pljulia ) + Z3 API in Julia ( https://github.com/ahumenberger/Z3.jl ) IMHO: if you have a favorite Python/R/Julia library in this topic - you can easily integrate it with PostgreSQL. Regards, Imre Mubashir Anwar <mubashir.anwar1...@gmail.com> ezt írta (időpont: 2021. okt. 14., Cs, 21:41): > > Hi! > > I am a PhD student, researching on using databases to implement network > control infrastructure. For this purpose, I wanted to use conditional > tables <http://users.encs.concordia.ca/~grahne/papers/conditional.pdf> in > databases, which allow representing unknown values in a DB with conditions > over tuples. However, I could not find any DBMS that supports them. Are > there any postgres extensions/features that implement conditional tables? I > wanted to confirm by asking here in case I missed something in my search. > > Thanks in advance! > > Best, > Mubashir >
