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Rel Ruby (+7NF)

Rel Ruby (+7NF). moriq Ruby@ 関西 Reject Kaigi2007. SQL. なんでこんな言語なんだ？ SELECT * FROM r SELECT * FROM r WHERE c SELECT name FROM r WHERE c SELECT ... FROM (SELECT name FROM r WHERE c) JOIN s. Tutorial D. そこで Tutorial D ですよ r r[c] r[c]{name} r[c]{name} JOIN s. D.

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Rel Ruby (+7NF)

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  1. Rel Ruby(+7NF) moriq Ruby@関西 RejectKaigi2007

  2. SQL • なんでこんな言語なんだ？ • SELECT * FROM r • SELECT * FROM r WHERE c • SELECT name FROM r WHERE c • SELECT ... FROM (SELECT name FROM r WHERE c) JOIN s

  3. Tutorial D • そこでTutorial Dですよ • r • r[c] • r[c]{name} • r[c]{name} JOIN s

  4. D • data language specification • http://en.wikipedia.org/wiki/Tutorial_D

  5. Rel • Tutorial DのJava実装 • An Implementation of Date and Darwen's "Tutorial D" • http://dbappbuilder.sourceforge.net/Rel.html

  6. Rel Ruby • RelをRubyで実装してみた • http://dev.moriq.com/svn/rails/trunk/rel-ruby/

  7. O/R mapper • Object Model • Relational Model • なんでマッピングなんだ？

  8. Relation Object • Relation.new(heading) • r = Relation.new(id: Integer, name: String)

  9. Tuple Object • Tuple.new(attributes) • r << Tuple.new(id: 1, name: 'matz') • r << {id: 1, name: 'matz'}

  10. Relational Ruby • RubyでRelational Modelを表現 • r • r.select { |t| t.name == 'matz' } • r['name'] • r['name'].join(s)

  11. validation reference constraint inheritance locking logging index validation reference constraint inheritance locking logging index Ruby(AR) vs DBMS

  12. App + (RelEngine + Storage) • (App + RelEngine) + Storage

  13. Thank you

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