minisketch VS TablaM

Anyone interested in IBLT with low failure probablity should also be aware of pinsketch and, particularly, our implementation of it: minisketch ( https://github.com/sipa/minisketch/ ).

Our implementation communicates a difference of N b-bit entries with exactly N*b bits with 100% success. The cost for this communications efficiency and reliability is that the decoder takes CPU time quadratic in N, instead of IBLT's linear decoder. However, when N is usually small, if the implementation is fast this can be fine -- especially since you wouldn't normally want to use set recon unless you were communications limited.

Pinsketches and iblt can also be combined-- one can use pinsketches as the cells of an iblt and one can also use a small pinsketch to improve the failure rate of an iblt (since when a correctly sized IBLT fails, it's usually just due to a single undecodable cycle).

Since the protocol appears to use adhoc synchronization, the authors might be interested in https://github.com/sipa/minisketch/ which is a library that implements a data structure (pinsketch) that allows two parties to synchronize their sets of m b-bit elements which differ by c entries using only b*c bits. A naive protocol would use m*b bits instead, which is potentially much larger.

I'd guess that under normal usage the message densities probably don't justify such efficient means-- we developed this library for use in bitcoin targeting rates on the order of a dozen new messages per second and where every participant has many peers with potentially differing sets--, but it's still probably worth being aware of. The pinsketch is always equal or more efficient than a naive approach, but may not be worth the complexity.

The somewhat better known IBLT data structure has constant overheads that make it less efficient than even naive synchronization until the set differences are fairly large (particular when the element hashes are small); so some applications that evaluated and eschewed IBLT might find pinsketch applicable.

I love the set reconciliation structures like the IBLT (Iterative Bloom Lookup Table) and BCH set digests like minisketch.

https://github.com/sipa/minisketch

Lets say you have a set of a billion items. Someone else has mostly the same set but they differ by 10 items. These let you exchange messages that would fit in one UDP packet to reconcile the sets.

Sipa is working on a better version of that for a while. The technical term is a "set reconciliation protocol", but Bitcoin Core been doing a more basic version of this for a while. Note that the "BCH" there isn't the same as Bcash

I'd also have to say that Zig is a pretty neat library for this. In order to implement PBS I needed the MiniSketch-library (written in C/C++) and I'll have to say that integrating with it has been a breeze. Some fiddling in build.zig so that I can avoid Makefile, and after that everything has worked amazingly.

Networks that need to constrain themselves to limited typologies to avoid traffic magnification do so at the expense of robustness, especially against active attackers that grind their identifiers to gain privileged positions.

Maybe this is a space where efficient reconciliation ( https://github.com/sipa/minisketch/ ) could help-- certainly if the goal were to flood messages to participants reconciliation can give almost optimal communication without compromising robustness.

> Very curious if anyone knows how to pull this off.

I work in this space (small/mid-size).

The good news is that there are several "obvious" ways to pull this off because an ERP is the culmination of everything a company needs and does. So almost anything you can imagine on the software is part of it.

The bad news, and the reason everyone wants a solution, is that is truly a big space, and then you need E.V.E.R.Y.T.H.I.N.G.

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My take is to start from the bottom, and build a much better version of Access/FoxPro (https://tablam.org).

Any medium/big ERP end being a specialized computing platform that needs:

- A programming language

- A database engine

- An orchestration engine

- ELT engine

- Auth

- UI/Report builders

And to be clear: NONE of the "programming language", "database engine", etc are a good fit today.

NONE.

This is the big thing, This is the reason (from a tech POW only) that most attempts fail.

This is the secret of why Cobol rule(d): Is all of this! but is too old! (also, this is why SQL still is best: Is almost this).

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So, to pull this off, you need a team that knows what is "missing" from our current tools, makes a well-integrated package, and adds a "user-friendly" interface in a way that is palatable for the kind of user that uses excel (powerfully).

Is not that impossible. FoxPro was the best example of this kind of integrated solution.

P.D: This is my life's dream, to make this truth!

SEEKING VOLUNTEERS: TablaM relational language (https://tablam.org)

TablaM is an in-progress programming language to provide a more ergonomic experience for building data-oriented applications.

This means that where most languages are focused on low-level details or engineering at large, TablaM is tailored with some small & big design decisions to make it enjoyable to write applications for e-commerce, finance, ERPs, and similar.

Cool things:

- TablaM marry the array + relational models. It means we should get very little need for manual loops and all the ops are vectorized.

Yeah, I worked on https://tablam.org and https://spacetimedb.com.

It becomes pretty clear that `order` is a significant property to make useful (and performant!) programs. "Duplicates" is also required to make usefull programs.

One nonobvious reason for this: You wanna report that a `customer` has a duplicated key `1`. If you CAN'T model `[(customer.id = 1), (customer.id = 1)]` then you can't report errors! And `erroneous` data is VITAL to make useful programs because then the only possibility is "perfect" data, and that is not possible!

Another reason is that we want to `count` duplicates, to see `duplicates`, and other NON-obvious at first: "What is a duplicate?". Get fun with floats, Unicode, combining case and non-case sensitive input... and is obvious that for useful programs IS REQUIRED to support bags in an extended version of the relational model.

And yet...

IS very important to remember about `set semantics` and try to adhere to it when makes sense. Your query planner will like it. You "valid" constraints like it. And `unique index` like it. And so on...

Finally, for app development, I will "suggest" everyone use my lang https://tablam.org!

This is moe interesting than it looks, probably because the best part (IMHO) is about the type system, that is what enables the other ideas.

> In Julia, types are first-class and every value has a type

This is what I do from the start in https://tablam.org and only later found that is not common! Is so intuitive this way and simpler to check, by a lot. In fact, I waste so much time adapting type inference algorithms that are hard to translate because for some reason graphs are imposed on trees, types are second-class and live at a distance (and erased) and all is a mess this way.

The relational model already makes this so simple: `project / rename / extend` relational operators cover you.

From this other facilities become possible. Note how in `SQL` you don't have functions as first-class per se, but now try to imagine that a function is a table and suddenly, is much better!

My relational lang (https://tablam.org) that I wish to be a Excel + Access replacement is still half-backed.

I move it slowly in my personal computer but not much in public. Maybe adding another person will help me on that!

> what is a good alternative to Access (or Fox, I add)

Nothing.

Access is(was) in fact a worse alternative to Fox:

- Much worse DB engine, and that is saying a lot (FoxPro db can and get corrupted. A typical functionality that was added to any fox codebase was a utility to fix it)

- MUCH MUCH worse programming language (VB) that is neither good as-is, much less as a data-programing language.

Fox/dbase is the only data-oriented language that was relatively popular and fit for the use-case.

This is by a mile the main point: Is a desert looking for languages that are made for business app/data oriented programing (and much harder looking for something not weird).

The main options: Fox/dBase/Informix(? not remember), kdb+, Cobol, SQL(when extended as store procedure lang with loops and that)

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This point is big. Having a good form builder (that is already rare) is not enough to be a real contender for this space. You need a language where making queries is truly nice.

In short, you need a language that is `LINQ/Relational` as first-class end-to-end.

- If this lang needs an ORM: FAIL.

- If this lang needs to compose strings to make a query: FAIL.

- If exist "impedance mismatch" between data manipulation/queries and the rest of the lang: FAIL.

- It should also support super-advanced types like date, decimal, currency and ideally dimensional units. Ideally algebraic types as today.

- It should have a version of Rust `serve, Into/From` for easy conversion between data + formats.

- It should look "normal" like python/swift with `LINQ` queries.

This is the lang I trying to build: https://tablam.org

> I asked was about querying data without ever using a SQL language, like tapping directly into the data.

I agree (making https://tablam.org to try a fix & working on https://github.com/clockworklabs/SpacetimeDB in the SQL conformance).

Before I think SQL was bad. *Now I'm certain*. SQL is absurdly massive for things that could have collapse all the features 10x or more.

However, working in an RDBM now I also understand why is not desirable to make "raw" calls to the DB: The engine MUST mediate all the calls to make things works (from query optimization, execution, iteration, lock management, transaction management, etc).

Is incredible how much sophistication is in a simple `SELECT * FROM table`.

What I wish is to build a `Wasm-like` IR so that is what anybody target, and `SQL` is not the mediator.

In my case each lang I have learned (+12) I start coding a mini-ORM. I have done the same so many times, and that is a good way to learn from me. Also, I have to learn Rust building https://tablam.org.

It sounds puzzling, I start learning Rust with https://tablam.org and probably was making my life harder trying to do "advanced" stuff when not have any idea of what I was doing.