?f??? ?fa?

1
?f??? ?fa?µ???? ?p??e???µat???? ??f??a? st?
??µ?s?? ??µ?a

• ?aµ?a??? ?at??a?t????? (damianos_at_aueb.gr)
• ?p??. ?a????t??, ?µ?µa ??????t???? ?p?st?µ?? ?a?
  ?e???????a?
• ??????µ??? ?a?ep?st?µ?? ??????
• ?µe??da ?p??e???µat???? ??f??a? st? ??µ?s?? ??µ?a

2
?????aµµa ?µe??da? (1)

• 3.15-3.30
• ?f??? ?fa?µ???? ?p??e???µat???? ??f??a? st?
  ??µ?s?? ??µ?a, ?aµ?a??? ?at??a?t?????, ?p??.
  ?a?., ?µ?µa ??????t???? ?p?st?µ?? ?a?
  ?e???????a?, ???
• 3.30-4.00
• ?p??e???µat??? ??f??a ?a? ??µ?s??? ??µ?a?,
  ??µ?s????? ??a???st?p?????, Ge????? G?aµµat?a?
  ?????f???a??? S?st?µ?t??, ?p????e?? ??????µ?a?
  ?a? ??????µ????
• 4.00-4.20
• BI ?etas??µat?sµ?? ?????f???a? se ???a?e??
  ?p?fas??, ????? ???a???, Ge?. ??e??.
  ?a?at???t????? ??a t?? ?.t.?.

3
?????aµµa ?µe??da? (2)

• 4.50-5.10
• ?p??e???µat??? ??f??a ???sd?d??ta? a??a st?
  ???????? ??µ?s??, ????a?d??? ?????, Group Product
  Director, BO/Relational
• 5.10-5.30
• Cognos Government Performance Management, ???????
  ?????, Cognos CPM Senior Consultant,
  Cognos/SCICOM
• 5.30-5.50
• ????????µ??e? ??se?? ???p???se??
  ?p??e???µat???? ??f??a?, ??t???? ???a?, Account
  Manager, Public Academic Sector, Microsoft
• 5.50-6.10
• Oracle Business Intelligence Solutions in Public
  Sector, ???? ?apastaµ?????, Technology Sales
  Consultant, Oracle Hellas
• 6.10-6.30
• SPSS Predictive Analytics ??a t?? ??µ?s?? ??µ?a,
  ???ss?? ?apapa?a???, Sales Marketing Director,
  SPSS-BI

4
?p??e???µat??? ??f??a (EE)

• ? ?p??e???µat??? ??f??a (Business Intelligence)
  pe???aµß??e? ??a s????? te?????? d?a?e???s??
  ded?µ???? µe s??p? t?? p??sßas? se a???p?st?
  p????f???a, t?? ???a??? ?a? ap?te?esµat??? ????
  ap?f?se?? ?a? t?? e?????? ???s?µ?? ???s??.

5
?p????e? ?ed?µ???? - Data Warehouses

• ??a e???p???µ???, p????? ?a? s??ep?? ß?s?
  ded?µ????, ? ?p??a pe????e? p????f???e? ap?
  d?af??et???? p???? ded?µ????, d?a??s?µe? st?
  ???st? se µ?a µ??f? ap??, ?ata???t? ?a? ???s?µ?
  st? ???? ep??e???µat???? ap?f?se??.
• W.H. Inmon A data warehouse is a
  subject-oriented, integrated, time-varying,
  non-volatile collection of data that is used
  primarily in organizational decision making.

6
?a?ade??µata ??

• ????d??stat? a????s? ded?µ????
• p.?. p??? e??a? ? p?s?st?a?a a???s? a?? p?????
  a?t? t? ????? se s??s? µe t?? p??????µe??
• ????p???? a????s? ded?µ????
• p.?. p??a e??a? ? p?s?st?a?a µetaß??? t??
  p???se?? e??? p?????t?? ap? µ??a se µ??a ?a? p??
  s??????eta? µe t?? a?t?st???? µetaß??? t??
  ?at?????a? t??
• What-If se????a
• p.?. e?? a???s? t?? t?µ? t?? p?????t?? ?12 ?at?
  5, p?? ?a ep??easte? t? ROI
• ??????? ???s??
• p.?. p???? ap? t??? pe??te? µ?? ????? t?
  µe?a??te?? p??a??t?ta ?a pa?aµe????? p?st?? st??
  eta???a µa?

7
??se?? ?ed?µ???? ?a? ??

• ???sßas? se p????, s?st? ?a? e???p???µ??a
  ded?µ??a (??µa p???t?ta? ded?µ????)
• ?? ???ste? ?a µp????? ?a d?at?p????? e????a ta
  e??t?µata st?????? ap?f?se??, ?s? p???p???a ?a?
  a? e??a? (??µa ??f?as??)
• ?? s?st?µa ?a apa?t?e? se a?t? ta e??t?µata
  ??????a (??µa ?p?????sµ??)
• G?a a?t??? t??? ?????? s?????? d?a???????-µe t?
  s?st?µa EE ap? t?? ?e?t???????? ??.

8
????te?t????? S?st?µ?t?? ?? (1)
Data Marts and cubes
Source Systems
Data Warehouse
Clients
Query Tools Reporting Analysis Data Mining
1
3
4
2
Design of Extract, Transform Creation of
Data Data Warehouse Loading (ETL) OLAP
Cubes Analysis
9
F?s? S?ed?asµ?? ?p?????? ?ed?µ????

• S?ed?asµ?? t?? ß?s?? ded?µ???? p?? ?a ape?????se?
  t?? ap????? ded?µ????, ???s?µ?p????ta? ?at?????e?
  s?ed?ast???? te?????? ??a t?? ?p?st????? (??????)
  p???d??stat?? a????s?? ded?µ????
• s??µa ast??a (star schema)
• s??µa ???????f?da? (snowflake schema)

10
????te?t????? S?st?µ?t?? ?? (2)
Data Marts and cubes
Source Systems
Data Warehouse
Clients
Query Tools Reporting Analysis Data Mining
1
3
4
2
Design of Extract, Transform Creation of
Data Data Warehouse Loading (ETL) OLAP
Cubes Analysis
11
F?s? Extract-Transform-Loading

• ???d?a??af? ?a? ???p???s? ???? t?? d?ad??as???
  e???p???s??, µetat??p??, ?a?a??sµ?? ?a? e?sa?????
  ded?µ???? st?? ?p????? ?ed?µ????
• d?af??et??? ??d???p???s?
• t?µ?? p?? ?e?p??? ? ????? ????? t?µ??
• ded?µ??a p?? a?t?p??s?pe???? t?? ?d?a ??t?t?ta
• d?ad??as?a refresh

12
????te?t????? S?st?µ?t?? ?? (3)
Data Marts and cubes
Source Systems
Data Warehouse
Clients
Query Tools Reporting Analysis Data Mining
1
3
4
2
Design of Extract, Transform Creation of
Data Data Warehouse Loading (ETL) OLAP
Cubes Analysis
13
F?s? ???p???s?? OLAP ??ß??

• ???p???s? t?? ?at??????? d?µ?? ded?µ???? ?a?
  ?a????sµ?? te?????? ap????e?s?? (??ß?? ded?µ????,
  e??et???a, d?aµe??sµ?? se d?af??et????? d?s????)
  ?ste ?a ?p?st????eta? ? ??????? ?a?
  ap?te?esµat??? ap??t?s? se p???p???a e??t?µata
  a????s?? ded?µ????.

14
????te?t????? S?st?µ?t?? ?? (4)
Data Marts and cubes
Source Systems
Data Warehouse
Clients
Query Tools Reporting Analysis Data Mining
1
3
4
2
Design of Extract, Transform Creation of
Data Data Warehouse Loading (ETL) OLAP
Cubes Analysis
15
F?s? ????p???s?? ?ed?µ????

• ?p????? t?? e??a?e??? a????s?? ded?µ????
• p???d??stat? a????s? ded?µ???? (OLAP)
• ad hoc a????s? ded?µ???? (ad hoc data analysis)
• d?µ??????a a?af???? (reporting)
• e?????? ???s?? (data mining)
• s?stad?p???s? (clustering)
• ?at??????p???s? (classification)
• ?a???e? s?s??t?s?? (association rules)
• a????s? t?se?? (sequence/trend analysis)

16
???t?ste? ??a?t???? ?fa?µ???? ??

• ?p?st????? ap? t? d?????s?.
• ??a?e???s? p??sd????? ???st??.
• Stad?a?? ???p???s? ?????.
• ???sa?µ?st???t?ta.
• ????t?ta ded?µ????.
• S?µµet??? t?? te????? ???st??.
• ???stas?a p??s?p???? ded?µ????.

17
?? ?a? ?d??t???? ??µ?a? (1)

• ? t?µ?a? ?? ?e????se p??? ap? 12-15 ?????a sa?
  µ?a niche efa?µ??? ??a µe?????? ???a??sµ??? ?a?
  ep??e???se??. ????? efa?µ??eta? se eta???e? µe
  µ?????f?? a???µ? ?pa??????!
• ?ed?? efa?µ????
• ??a?eµp???? (a????s? p???se??)
• t?ape???? (a????s? p?st?t???? ?a?t??, s??a??a???)
• t??ep????????e? (a????s? ???se??, pe?at??)
• asf??e?e?, ???µat???????µ???, µetaf????, ?.a.

18
?? ?a? ?d??t???? ??µ?a? (2)

• S?µf??a µe t?? eta???a a????s?? Gartner
• Global business intelligence (BI) platform
  revenue grew 10 per cent in 2007 reaching 1.5bn
  according to analyst Gartner.
• The report says BI platform revenue will grow at
  an annual compound growth rate of 9.7 per cent to
  reach 1.9bn in 2010.
• A preview of the results from Gartners annual
  survey of 1,400 CIOs worldwide shows that BI is
  the number one technology priority in 2007 for
  the second year running.

19
?? ?a? ??µ?s??? ??µ?a?

• S?µf??a µe t?? eta???a a????s?? Butler Group
• Private sector firms spend twice as much on
  business intelligence (BI) than public sector
  bodies, according to analyst Butler Group.
• Only one in five public sector bodies in Europe
  and the US have already invested in BI, compared
  to two in five in the private sector, excluding
  small companies.
• Only 15 per cent of public sector organisations
  plan to invest in BI in the next two years,
  compared to 28 per cent of private companies.
• But it is the public sector which is critically
  in need of the technology to improve decision
  making and choose the best options for
  modernisation.

20
??µ?a? ?a?de?a? (1)

• ? t?µ?a? t?? pa?de?a? e??a? ap? t??? p??
  ???s?µ??? t?µe?? e??? ???t??? ef?s?? ap?te?e?
  p??? pa?a????? t?? ???? e??at???? d??aµ???? t??
  ???a? ?a? s?µß??e? st?? p?????s? t?? ep?st?µ??
  ?a? t?? ??e??a?.
• ?e?t????? ????a? e??a? ? d?µ??????a ap??????
  ded?µ???? p?? ?a s?µpe???aµß??e? p????f???e? ap?
  ????? t??? f??e?? pa????? pa?de?a? se ??? t?
  f?sµa t??? (p??t?ß??µ?a, de?te??ß??µ?a ?a?
  t??t?ß??µ?a e?pa?de?s?).
• ??a ???? p??s????s? e??a? ? ap????? ded?µ???? ?a
  pe?????ste? se ???e f???a pa????? pa?de?a? ? st?
  s????? t?? f????? pa????? pa?de?a? t?? ?d?a?
  ?at?????a?.

21
??µ?a? ?a?de?a? (2)

• ?p? t?t??e? ap????e? ded?µ???? µp????? ?a
  e?a????? µe t?? ???s? a?a??t???? µe??d??
  epe?e??as?a? a?af???? s?et???? µe ta
• St???e?a ??st??? a?? µa??t?/f??t?t? se ???e f???a
  pa????? pa?de?a? ??a t?? a?a?????? pe??tt??
  e??d??.
• S?????t??? a???????s? ap?d?s?? t?? f?????
  pa?de?a? (p.?. e??es? t?? µ?s?? ???? t?? ßa?µ??
  t?? µa??t??/f??t?t??, e?e???t??? ???? ?a????t??)

22
??µ?a? ?a?de?a? (3)

• S?s??t?s? ded?µ???? ?p?? a? ? e??as?a pa??????a
  µe t?? d?e?a???? t?? sp??d?? a????e? ? ??? t??
  ????? d?e?pe?a??s?? t?? sp??d??, a? ? e??as?a??
  eµpe???a ß???? st?? ?a??te?? ?at??t?s? t??
  f??t?t??, a? ? ßa?µ?? t?? ap???t?????
  s?s?et??eta? µe t?? ßa?µ? pt????? ??p
• St???e?a ??a t?? d?a?e???s? t?? ??????µ???? t??
  f????? pa????? pa?de?a? (p? ???da ??a ??e??a, ??a
  ?????te????? ?p?d?µ? ??p)
• ?at??????p???s? µa??t??/ f??t?t?? /das?????
  /?a????t?? a?????a µe ta ep?st?µ?????
  e?d?af????t? t???.
• ??a?????? p????sµ?? µa??t??/f??t?t?? µe
  µa??s?a??? d?s????e?
• ??a?????? t?? ?a??te??? µe??d?? d?das?a??a?

23
??µ?a? ?a?de?a? (4)

• G?a pa??de??µa t? ??t??? ?e??fe?e?a?? ???t??
  ?????f???s?? t?? ??a? ?????? (Western New York
  Regional Information Center - http//www.wnyric.or
  g -) ?a??pte? t? 98 t?? s??????? pe??fe?e??? t??
  (p??? ap? 250.000 µa??t??) ?a? efa?µ??e? te??????
  ap?????? ded?µ???? ?a? a?a??t???? epe?e??as?a?
  ??a t? ???? p????f?????.

24
??µ?a? ??e?a? (1)

• ? s??????, e???p???s? ?a? a???p???s? p????f???a?
  ??a pe??stat??? ??e?a? µp??e? ?a p??sf??e? µ?a
  d?aµat??? ße?t??s? st?? p??sfe??µe?? ?p??es?a
  p??? t?? p???-t?, st?? e???????µ?s? p???? ?a? st?
  e?e???t??? ????.
• ? ????a ?d?a e??a? ? ?ata??af? se µ?a ?e?t????
  ap????? ded?µ???? t?? st???e??? t?? as?e???, t??
  asfa??st?-??? t??? ???????, t? d?????s? t??
  as???e??? t???, t? s??ta?????f?s? ?a? t?
  µ?tepe?ta p??e?a ?a? e?????? t?? s?µß??t??.

25
??µ?a? ??e?a? (2)

• ???a? s?µa?t??? ? ?a?????s? p??t?p??
  d?a?e?t?????-??t?ta?, ?ts? ?ste ?a ?p???e?
  e???p???s? t?? p????-f???a?. Se d??f??e? ???e?
  ?p?????? p??sp??e?e? ?a?????s?? µ?a?
  ??e?t??????? ?a?t??a? as?e???? (electronic
  patient record).
• ??a t?t??? s?st?µa ?a µp????se ?a ???s?µ?p????e?
  ??a t? d?µ??????a p????? ?a? e?a??et??? ???s?µ??
  a?af????, ???s?µ?? se ??a µe???? ????? ???st??,
  ap? t?? ap?? p???t? µ???? ??ße???t??? ste????,
  s?µß?????ta? st?? a??pt??? ???ta ??e?a? p?? ?a
  ?p?ß????se? t? d?aµ??f?s? p???t???? ??e?a?.

26
??µ?a? ?????????? ?sf???s?? (1)

• ? est?as? se µ?a ??s? ep??e???µat???? e?f??a?
  e??a? ? ??????µ??? d??stas? t?? d?a?e???s?? t??
  ?????????? asf???s??. ? ????a ?d?a e??a? ?
  ?ata??af? se µ?a ?e?t???? ap????? ded?µ???? t??
  st???e??? t?? as?e???, t?? asfa??st???? t???
  ???????, t?? ep?s???e?? st? ???t?? ??e?a? ?a? ?
  a?????? s??ta?????f?s?.

27
??µ?a? ?????????? ?sf???s?? (2)

• ?a?ade??µata
• ?a?a???????s? e??????? es?d?? ?a? e?t??es?? t??
  e?sp?a?t???? d?ad??as?a? s??????? a??? ?a? a??
  pe??f??e?a.
• ?e?????sµ?? e?sf???d?af???? µ?s? t?? a????s?? t??
  p??f?? ???e ????d?t? / ?sfa??sµ????.
• ?a?a???????s? ????d?? ???t?ß??µ?a? F???t?da?
  ??e?a? ?sfa??st???? ?aµe???.
• ??a a?t?p??s?pe?t??? pa??de??µa ap? t? d?e???
  eµpe?-??a e??a? t? ????????? s?st?µa asf???s??
  Medicare/ Medicaid st?? ?.?.?., t? ?p??? a?a??e?
  t?? s??ta????a-f?se?? µe s??p? t?? p???d?astat?
  ??????µ??? a????s? ?? p??? p???te?a, pe?????,
  e?d?? fa?µ????, p???s?, ?.a.

28
??µ?a? ??????µ???? (1)

• ? ????a ?d?a e??a? ? ?ata??af? se µ?a ?e?t????
  ap????? ded?µ???? t?? d?af???? ??????µ????
  st???e??? ????se?? t?? f????????µe???, s??d?asµ??
  d?µ???af???? st???e???, eta????? ded?µ??a ?a?
  pa?a???? a?af???? p?? s?et????ta? µe
• ?a?a???????s? e??????? es?d?? ?a? e?t??es?? t??
  f?????????? p???t???? s??????? a??? ?a? a??
  ?e??f??e?a/???.
• ??aµ??f?s? p??f?? f????????µe??? (µe ?ata??af?
  ???? t?? ?st?????? s??a??a???) ??a t?? ?p?st?????
  ßa?µ?????s?? ???d???? (f???d?af????) ?a?
  d?e????e?a? st??e?µ???? f?????????? e??????.

29
??µ?a? ??????µ???? (2)

• ?????s? ?p??et???? se?a???? f?????????? a??a???
  (p.?. a??a?? f?????????? ???µa?a?) ?a? a???????s?
  ep?d?as?? sta ?s?da t?? ???t???.
• ?a?a???????s? e??????? t?? e?t??es?? t??
  p???p?????sµ?? ??????µ?a?.
• ?a???? a?a??t???? stat?st???? e?s?d?µat?? f?s????
  ?a? ??µ???? p??s?p?? st?? ?S??.

30
??µ?a? ??µ?s?a? ?sf??e?a?

• ? d?e???? eµpe???a pe???aµß??e? a??et??
  pe??pt?se?? ???p???s?? ??se?? ep??e???µat????
  e?f??a? sta d??ast??? ?a? ast???µ??? s?µata.
• Stat?st??? pa?aßas?µ?t?ta? a?? ?at?????a
  p????sµ??, ?e???af??? pe?????, e?d??
  pe??stat????.
• S?????t??? st???e?a a???µ?? pe??stat???? st?
  d????e?a t?? ?????? ?a? e?a???? t?se??.
• ??????? a?t?d?as?? a?? e?d?? pe??stat????,
  pe?????? ?a? pe???d??.
• ?at??????p??s? t?? pe??stat???? ?? p???
  d?af??et???? pa?aµ?t???? (p.?. pe?????) ?a?
  e??es? ?a????? s?s??t?s??.

31
??µ?a? ???pt????

• St?? t?µ?a t?? a??pt???? ?p?????? p????? ???ete?
  efa?µ???? ?? ?p??e? ?a µp????sa? ?a ep?fe??????
  ap? t? ???s? ??se?? ep??e???µat???? e?f??a?. G?a
  pa??de??µa ?p?????? p????? efa?µ????
  pa?at???t????? t?µ?? ?p?? ?a µp????se ?a
  p?a?µat?p????e? p???d??stat? a????s? ?? p??? t?
  ?????, t? e?d?? t?? p?????t??, t?? pe?????, ?a
  ?ata??af??? t?se?? ?a? ?a ß?e???? s?s?et?se??.

32
???t?ste? ??a?t???? ?fa?µ???? ??

• ?p?st????? ap? t? d?????s? ().
• ??a?e???s? p??sd????? ???st?? ().
• Stad?a?? ???p???s? ?????.
• ???sa?µ?st???t?ta.
• ????t?ta ded?µ???? ().
• S?µµet??? t?? te????? ???st?? ().
• ???stas?a p??s?p???? ded?µ????.

33
S?µpe??sµata

• ? ep??e???µat??? e?f??a a?a??????eta? sa? ? p??
  s?µa?t??? p??te?a??t?ta t?? CIOs d?e???? ??a ta
  ep?µe?a d?? ?????a.
• ? d?µ?s??? t?µ?a? ?p??e?peta? t?? ?d??t???? se
  ???p???se?? ?? t??????st?? ?at? 50 (????da)
• ?p???e? µe???? ped?? efa?µ???? ?? st? d?µ?s??
  t?µ?a µe µe???a ???d? sta ?e?t??????? ???da t??
  ?p??es??? ?a? sto s?ed?asµ? p???t???? ??a t??
  e??p???t?s?/??a??p???s? t?? p???t?.