One size fit All
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This document discusses the evolution of data persistence approaches over time from single-user applications in the 1960s to multi-user databases in the 1990s. It also describes some limitations of the traditional active record approach for complex domain models and highlights cases where a relational database may not be the best solution. Alternative approaches like NoSQL databases are presented as ways to overcome impedance mismatch and support unpredictable application needs more flexibly.
![TYPE document-Oriented
‘person’ -> ‘{
‘name’ : ‘david’,
‘surname’ : ‘funaro’,
phones: [
34702323,
233234124,
134014
]
}’
JSon
domenica 3 aprile 2011](https://image.slidesharecdn.com/slide-110403112111-phpapp02/85/One-size-fit-All-52-320.jpg)
One size fit All
- 1. One Size fits All David Funaro domenica 3 aprile 2011
- 2. - One Size fits-All David Funaro domenica 3 aprile 2011
- 3. Why i’m Here “There must be a better way to design this model” ????????????????????????????????? domenica 3 aprile 2011
- 4. Evolution of the persistence TIME ’60 Application SINGLE USER Everything in inside the application, every time we have to spend time to reinvent the wheel domenica 3 aprile 2011
- 5. Evolution of the persistence TIME ’60 ’70/80 Application Application Library SINGLE USER SINGLE USER Everything in inside the a good way to develop. All application, every time the business logic is in the we have to spend time Library to reinvent the wheel domenica 3 aprile 2011
- 6. Evolution of the persistence TIME ’60 ’70/80 ’90 Application Application Library RDBMS SINGLE USER SINGLE USER MULTI-USER Everything in inside the a good way to develop. All application, every time the business logic is in the Centralized storage of the we have to spend time Library model to reinvent the wheel domenica 3 aprile 2011
- 7. Data-Driven Application Design Data Application domenica 3 aprile 2011
- 8. Way to Develop • Define ER: • Indentify every Entities • Foeach entity find all the attributes domenica 3 aprile 2011
- 9. Active Record “Active record is an approach to accessing data in a database. A database table or view is wrapped into a class.” Wikipedia domenica 3 aprile 2011
- 10. ...but NOT always domenica 3 aprile 2011
- 11. ...but NOT always is the right way domenica 3 aprile 2011
- 12. 1:Real Case: plugin UserEvent Event User_id 100 id : 12 event_id 12 domenica 3 aprile 2011
- 13. 1:Real Case: plugin UserEvent Event User_id 100 id : 12 event_id 12 Document id : 54 domenica 3 aprile 2011
- 14. 1:Real Case: plugin UserEvent Event User_id 100 id : 12 event_id 12 Document id : 54 Group id : 78 domenica 3 aprile 2011
- 15. 1:Real Case: plugin UserEvent Event User_id 100 id : 12 event_id 12 Document UserEntity id : 54 User_id 100 Class Document entity_id 12 Group id : 78 domenica 3 aprile 2011
- 16. 1:Real Case: plugin UserEvent Event User_id 100 id : 12 event_id 12 Document UserEntity id : 54 User_id 100 Class Document entity_id 12 Group id : 78 domenica 3 aprile 2011
- 17. 1:Real Case: plugin UserEvent Event User_id 100 id : 12 event_id 12 Document UserEntity id : 54 User_id 100 Class Document entity_id 12 Group id : 78 domenica 3 aprile 2011
- 18. 1:Real Case: plugin UserEvent Event User_id 100 id : 12 event_id 12 Document UserEntity id : 54 User_id 100 Class Document entity_id 12 Group id : 78 domenica 3 aprile 2011
- 19. 1:Real Case: plugin UserEvent Event User_id 100 id : 12 event_id 12 Document UserEntity id : 54 User_id 100 Class Document entity_id 12 Group id : 78 Integrity : Broken domenica 3 aprile 2011
- 20. 1:Real Case: Redundance UserEvent Event User_id 100 id : 12 event_id 12 UserDocument User_id 100 Document document_id 12 id : 54 UserGroup Group User_id 100 id : 78 document_id 12 domenica 3 aprile 2011
- 21. 1:Real Case: menu Home: •page •event •group •document domenica 3 aprile 2011
- 22. 1:Real Case: menu Menu name home Home: menu_item_id 2 •page •event •group •document domenica 3 aprile 2011
- 23. 1:Real Case: menu Menu name home Home: menu_item_id 2 •page •event MenuItem •group name home •document menu_item_id 2 class Group entity_id id domenica 3 aprile 2011
- 24. 1:Real Case: menu Menu name home Home: menu_item_id 2 •page •event MenuItem •group name home •document menu_item_id 2 class Group entity_id id Event id : 12 domenica 3 aprile 2011
- 25. 1:Real Case: menu Menu name home Home: menu_item_id 2 •page •event MenuItem •group name home •document menu_item_id 2 class Group entity_id id Event Document id : 12 id : 54 domenica 3 aprile 2011
- 26. 1:Real Case: menu Menu name home Home: menu_item_id 2 •page •event MenuItem •group name home •document menu_item_id 2 class Group entity_id id Event Group Document id : 12 id : 78 id : 54 domenica 3 aprile 2011
- 27. 1:Real Case: menu Menu name home Home: menu_item_id 2 •page •event MenuItem •group name home •document menu_item_id 2 class Group entity_id id Event Group Document id : 12 id : 78 id : 54 domenica 3 aprile 2011
- 28. 1:Real Case: menu Menu name home Home: menu_item_id 2 •page •event MenuItem •group name home •document menu_item_id 2 class Group entity_id id Event Group Document id : 12 id : 78 id : 54 domenica 3 aprile 2011
- 29. 1:Real Case: menu Menu name home Home: menu_item_id 2 •page •event MenuItem •group name home •document menu_item_id 2 class Group entity_id id Event Group Document id : 12 id : 78 id : 54 domenica 3 aprile 2011
- 30. Impedence mismatch domenica 3 aprile 2011
- 31. Design Model domenica 3 aprile 2011
- 32. Design Model Application Needs domenica 3 aprile 2011
- 33. Design Model | = Application Needs domenica 3 aprile 2011
- 34. Design Model | = Application Needs Comportamenti che i modelli non sono in grado di supportare domenica 3 aprile 2011
- 35. Arrangement Design Model | = Application Needs Comportamenti che i modelli non sono in grado di supportare domenica 3 aprile 2011
- 36. Technology focus domenica 3 aprile 2011
- 37. Technology focus domenica 3 aprile 2011
- 38. Bad RDBMS Cases domenica 3 aprile 2011
- 39. Data Mapping Struttura Dati RDBMS id 10 name pippo parent_id 19 domenica 3 aprile 2011
- 40. The Alien Different Behaviour Different Model domenica 3 aprile 2011
- 41. Unpredictable Tomorrow • User Story never complete • User Story evolve domenica 3 aprile 2011
- 42. Bad DBMS Cases • Dynamic Pages • Data mapping • The Alien • Producer/Consumer • Overnormalized • Unpredictable tomorrow domenica 3 aprile 2011
- 43. Bad DBMS Cases • Dynamic Pages • Data mapping • The Alien • Producer/Consumer • Overnormalized = • Unpredictable tomorrow domenica 3 aprile 2011
- 44. Bad DBMS Cases • Dynamic Pages • Data mapping • The Alien • Producer/Consumer • Overnormalized = • Unpredictable tomorrow domenica 3 aprile 2011
- 45. NoSql domenica 3 aprile 2011
- 46. NoSql Not Only Sql domenica 3 aprile 2011
- 47. NoSql Not Only Sql Just find the right way to manage our data-set domenica 3 aprile 2011
- 48. NoSql domenica 3 aprile 2011
- 49. document- document- TYPE oriented key-value oriented graph Reliability / Performance / FOCUS doc-oriented Performance doc-oriented edge relations Schema-less SCHEMA Schema-less Schema-less Schema-less Schema-full Mixed domenica 3 aprile 2011
- 50. Performance • Redis : about 110000 SETs per second, about 81000 GETs per second. domenica 3 aprile 2011
- 51. TYPE Key - Value ‘nome’ -> ‘Davidino’ domenica 3 aprile 2011
- 52. TYPE document-Oriented ‘person’ -> ‘{ ‘name’ : ‘david’, ‘surname’ : ‘funaro’, phones: [ 34702323, 233234124, 134014 ] }’ JSon domenica 3 aprile 2011
- 53. TYPE Graph DB JSon domenica 3 aprile 2011
- 54. More ... domenica 3 aprile 2011
- 55. So ? domenica 3 aprile 2011
- 56. So ? • Removing impedence mismatch is a good reason to avoid the relational model domenica 3 aprile 2011
- 57. So ? • Removing impedence mismatch is a good reason to avoid the relational model • Performances aren’t the only reason to choose NoSQL domenica 3 aprile 2011
- 58. So ? • Removing impedence mismatch is a good reason to avoid the relational model • Performances aren’t the only reason to choose NoSQL • A RDBMS isn’t always the proper choice domenica 3 aprile 2011
- 59. Thanks • David Funaro • http://www.davidfunaro.com • @ingdavidino • ing.davidino@gmail.com domenica 3 aprile 2011