wiki:Notes/BottleTalk/Database

BottleTalk Database Design

Realm names ( such as realm: ) are essentially the same as table names.

The basic design for entities and relations should powerful and general enough to provide a good foundation for the design of the Semantastic database as well.

blog:

  • date order
  • date order by tag
  • use previous for posting thread
slug/name summary content date previous
  • example
test-111-page 'This is a blog page' '= What This Blog Ids About = etc. ' Apr 25 2015 test-page-000
  • Content includes two tags and two links. Link to wiki:MyTestPage is unresolved ( invokes add action ).

tag:

name description searchword
  • examples
python About Python subjects python
needs-work Items that need work 'needs&work'
python-workflow About Python workflows python&workflow
workflow About workflow subjects workflow

wiki:

  • hierarchy ( ex. ParentPage/SubPage/SubSubPage )
  • reference resolution by breadth, then by depth
  • Page#Anchor is an entity, roughly a section: sub-realm
  • type/templates are literally templates
    • Such as 'wiki' ( default ), or 'section' with substitutes for header levels where used, what else ?
name summary type/template content version date
  • example
TestWikiPage111 Test of a wiki page ... '= Wiki Page 1 Title = \n One never knows, do one ... \n etc.' 1 Apr 22 2015
OtherWikiPage222 ' ... === Testing Python === \n Section name resolves to OtherWikiPage222#TestingPython \n etc. ' 1 Apr 26 2015
  • Content has a tag, two links and and InfoBox.

link:

  • simple link data, no name
  • group by domain
  • equiv. of About: page
  • could be strictly internal, for backlinks
url name title content
  • examples
http://mytestlink.com 2223
http://majorlink.com NameOfLink 'this is the mouse-over for a major link' '= Info About the Link = \n * Item1 \n * Item 2'

relation:

parent: relation: child: context: value/sequence
  • relation: examples
blog:test-111-page tag: tag:python
blog:test-111-page tag: tag:needs-work section: #ThingsToDo
blog:test-111-page link: link:2223 section: #Python
blog:test-111-page link: wiki:MyTestPage section: #Workflow
wiki:TestWikiPage111 tag: tag:workflow
wiki:TestWikiPage111 link: link:NameOfLink section: #TestingTheWiki
wiki:TestWikiPage111 link: wiki:OtherWikiPage222#TestingPython section: #UsingPython
wiki:TestWikiPage111 include: infobox:TheConcreteThingCorp section: #InfoAboutCompanies
tag:python assoc: tag:python-workflow weight: 8
tag:python assoc: tag:workflow weight: 4

relationdef:

name inverse context ( of parent ) sequence type
  • examples
tag tag_for
link backlink section #SectionName
include included_by section #SectionName
assoc assoc weight float
section section_of outline outline level

Debated with self about section: relationship, solves problems with metatag: references. May avoid hassle of <<Section>> macro."

type:

  • two way, parse or generate
  • similar to macros ?
name template name ???
  • examples
ConcreteThing InfoBox ???

Is infobox: a meta-type or equiv to a sub-domain: ?

typedef:

  • Attributes and display type
name attribute display type display seq.
  • examples
ConcreteThing name String 1
ConcreteThing location String 2
ConcreteThing web_site URL 3
ConcreteThing comments Wiki 4
ConcreteThing wiki_page WikiPath 5

value:

  • load system values from config file or config: realm ?
  • All values are strings ( json )
name ( or db id ? ) type: value
  • examples
value:3223 String This is a test.
value:LocalSiteName String Wickedest Wiki Around
TheConcreteThingCorp ConcreteThing { name: 'CCTC', location: 'Palo Alto', web_site: http://cctc.com, wiki_page: 'SomePage#ConcreteThing' }
AboutKtty Dict { name='hello kitty', descr='This is kitty\'s big day', url='http://shesabeast.com/my-little-kitty.html'}
  • Note that value:TheConcreteThingCorp is a singleton object of type:ConcreteThing.
  • Dict->OrderedDict maintains display order ... still vague on details.

Python Functions, Adapters, Converters And Collations

Very useful capability.

Built in sqlite functions, for ex.

select replace(child,'tag:',''), replace(parent,'home:','') from tagrelation
        where relation = 'tag' and parent like 'home:%'
        order by child

Can also use Python functions. for ex.

import sqlite3
import md5

def md5sum(t):
    return md5.md5(t).hexdigest()

con = sqlite3.connect(":memory:")
con.create_function("md5", 1, md5sum)
cur = con.cursor()
cur.execute("select md5(?)", ("foo",))
print cur.fetchone()[0]

Function - https://docs.python.org/2/library/sqlite3.html#sqlite3.Connection.create_function

Aggregate - https://docs.python.org/2/library/sqlite3.html#sqlite3.Connection.create_aggregate

Collation - https://docs.python.org/2/library/sqlite3.html#sqlite3.Connection.create_collation

Adapter - https://docs.python.org/2/library/sqlite3.html#using-adapters-to-store-additional-python-types-in-sqlite-databases

Converter - https://docs.python.org/2/library/sqlite3.html#converting-sqlite-values-to-custom-python-types

Also See

BottleTalk#Database for discussion of section: realm.

Last modified 2 years ago Last modified on 05/04/2015 01:35:40 PM