1 #+TITLE: Sixth Data - Data storage and computing engine
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14 - This is a subproject of [[http://www3.svjatoslav.eu/projects/sixth/][Sixth]]
16 - This program is free software: you can redistribute it and/or modify
17 it under the terms of the [[https://www.gnu.org/licenses/lgpl.html][GNU Lesser General Public License]] as
18 published by the Free Software Foundation, either version 3 of the
19 License, or (at your option) any later version.
23 - Homepage: http://svjatoslav.eu
24 - Email: mailto://svjatoslav@svjatoslav.eu
26 - [[http://www.svjatoslav.eu/projects/][Other software projects hosted at svjatoslav.eu]]
29 - [[http://www2.svjatoslav.eu/gitweb/?p=sixth-data.git;a=snapshot;h=HEAD;sf=tgz][Download latest snapshot in TAR GZ format]]
31 - [[http://www2.svjatoslav.eu/gitweb/?p=sixth-data.git;a=summary][Browse Git repository online]]
33 - Clone Git repository using command:
34 : git clone http://www2.svjatoslav.eu/git/sixth-data.git
38 :ID: f6764282-a6f6-44e6-8716-b428074dd093
40 Provide versioned, clustered, flexible, distributed, multi-dimensional
41 data storage engine for the [[http://www2.svjatoslav.eu/gitbrowse/sixth/doc/index.html][Sixth computation engine]].
43 + Speaking of traditional relational database and object oriented
44 business applications:
46 + I hate object-relational impedance mismatch.
48 + I don't like to convert data between persistent database and
49 runtime objects for every transaction. How about creating united
50 database/computation engine instead to:
52 + Eliminate constant moving and converting of data between 2 systems
53 and make computing happen close to where the data is stored.
55 + Abstract away difference between RAM VS persistent storage. Let
56 the system decide at runtime which data to keep in what kind of
60 + Relational databases:
62 + Indexable / Quickly searchable.
64 + Git (version control system)
66 + Branchable / mergeable.
67 + Transparent cansistency, checksumming and deduplication.
69 https://www.kenneth-truyers.net/2016/10/13/git-nosql-database/ )
73 :ID: d2375acc-af14-4f18-8ad0-7949501178c5
75 + Brain appears to have more than 3D dimensional design:
76 https://singularityhub.com/2017/06/21/is-there-a-multidimensional-mathematical-world-hidden-in-the-brains-computation/
78 + Brain appears to use geometry to map thoughts and even sounds:
79 https://www.quantamagazine.org/the-brain-maps-out-ideas-and-memories-like-spaces-20190114/
82 + It directly inspires following ideas
83 + [[id:5d287158-53ea-44a2-a754-dd862366066a][Distributed comutation and data storage]]
84 + [[id:a117c11e-97c1-4822-88b2-9fc10f96caec][Mapping of hyperspace to traditional object-oriented model]]
85 + [[id:b6b15bd2-c78b-4c51-a343-72843a515c29][Handling of relations]]
87 ** Distributed computation and data storage
89 :ID: 5d287158-53ea-44a2-a754-dd862366066a
91 Maybe every problem can be translated to geometry (use any shapes and
92 as many dimensions as you need). Solution(s) to such problems would
93 then appear as relatively simple search/comparison/lookup results. As
94 a bonus, such geometrical *data storage* AND *computation* can be
95 naturally made in *parallel* and *distributed*. That's what neurons in
96 the brain appear to be doing ! :) . Learning means building/updating
97 the model (the hard part). Question answering is making (relatively
98 simple) lookups (geometrical queries) against the model.
99 ** Mapping of hyperspace to traditional object-oriented model
101 :ID: a117c11e-97c1-4822-88b2-9fc10f96caec
103 Object oriented programming is inspired by the way human mind
104 operates. It allows programmer to express ideas to computer in a more
107 It is possible to map object model to geometrical hyperspace:
109 + Object is a point in space (universe). Each object member variable
110 translates to its own dimension. That is: if class declares 4
111 variables for an object, then corresponding object can be stored as
112 a single point inside 4 dimensional space. Variable values translate
113 to point coordinates in space. That is: Integer, floating point
114 number and even boolean and string can be translated to linear value
115 that can be used as a coordinate along particular dimension.
117 + Each class declares its own space (universe). All class instances
118 (objects) are points inside that particular universe. References
119 between objects of different types are hyperlinks (portals) between
121 ** Handling of relations
123 :ID: b6b15bd2-c78b-4c51-a343-72843a515c29
125 Consider we want to create database of books and authors. Book can
126 have multiple authors, and single person can be author for multiple
127 books. It is possible to store how many hours of work each author has
128 contributed to every book, using hyperspace as follows:
130 + Every dimension corresponds to one particular book author. (10
131 authors in the database, would require 10 dimensional space)
132 + Point in space corresponds to one particular book.
133 + Point location along particular (author) dimension corresponds
134 to amount of work contributed by particular author for given
139 + Every dimension corresponds to one particular book.
140 + Point in space corresponds to one particular author in the entire
142 + Point location along particular (book) dimension corresponds to
143 amount of work contributed for book by given author (point).
145 ** Layered architecture
146 + layer 1 :: disk / block storage / partition
148 + layer 2 :: key/value storage. Keys are unique and are dictated by
149 storage engine. Value is arbitrary but limited size byte
150 array. This layer is responsible for handling disk
151 defragmentation and consistency in case of crash
154 + layer 3 :: key/value storage. Keys are content hashes. Values are
155 arbitrary but limited size content byte arrays. This
156 layer effectively implements content addressable
157 storage. Content addressible storage enables GIT-like
158 behavior (possibility for competing branches, retaining
159 history, transparent deduplication)
161 + layer 4 :: Implements arbitrary dimensional multiverse.
163 + layer 5 :: Distributed computation engine.
165 - More or less defined [[id:f6764282-a6f6-44e6-8716-b428074dd093][Vision / goal]].
167 - Collected some [[id:d2375acc-af14-4f18-8ad0-7949501178c5][ideas]].
169 - Implemented very simple persistent key-value map.
170 - Long term goal is to use it as a backing storage engine and
171 implement more advanced features on top of this.
174 Interesting or competing projects with good ideas:
177 + database in the form of a knowledge graph that uses machine
178 reasoning to simplify data processing challenges for AI
179 applications. https://grakn.ai/
181 + [[http://wiki.squeak.org/squeak/2665][Magma]]
182 + Multi-user object database for Squeak
184 + [[http://esug.org/data/ESUG2015/3%20wednesday/1100-1130%20SQL%20Queries%20on%20Smalltalk%20Objects/SQL%20Queries%20in%20Smalltalk%20(James%20Foster).pdf][Gemstone/S]]
185 + Completely distributed smalltalk based computing
188 + [[http://www.uruk.org/emu/Taos.html][TAOS]]
189 + Completely distributed operating system/virtual machine:
191 + [[https://github.com/vygr/ChrysaLisp][ChrysaLisp]]
192 + Assembler/C-Script/Lisp 64 bit, MIMD, multi CPU, multi threaded,
193 multi core, multi user Parallel OS. With GUI, Terminal, OO
194 Assembler, Class libraries, C-Script compiler, Lisp interpreter,
195 Debugger, and more...