Πληροφοριακά Συστήματα

Πληροφοριακά Συστήματα

& 1 - . 1 : Laudon & Laudon, Management Information Systems, 9 ., Prentice-Hall, 2004 Effy Oz, , 3 ., Thomson Publ., 27/01/20

' ', , . : , , 2 (), , . . .

3 . 27/01/20 1 -. . ; - &

; 4 , , 27/01/20 (case studies) 40-50% 20%, Powerpoint 15 , HTML 2.500 4 4 , 2 email . 60-50% 5

www.syros.aegean.gr/users/gaviotis/is [email protected] 27/01/20 (. 1991, ~150 . ). enduro .

. C E O and C O O design 40 S a . P r o d u c t io n A d m i n is t r a t i o n le s & M a r k e t in g . P a r ts S h ip p in g M a n u f a c tu r in g S e r v ic e D e s ig n & & E n g in e e r in g ;

. R e c e iv in g 6 27/01/20 : Dirt Bikes 1 7 - Computer literate information systems literate ; ; & & (ecommerce) (ebusiness)

8 ; 27/01/20 1 - - . , , (Enterprise Resource Planning, ERP) ( ) 9

27/01/20 & : ( , ) 2003 35% . 10 27/01/20 , Dollar General: . 1939, $6,9 , 1

, . (~4.000), 4,3% , 60.000 . $2.800 $124. 8 : , , , (5 ). . 10-20 . 11

. . , . . . 27/01/20 .

12 ( )

27/01/20 . : . 13 . . . 27/01/20

(start-ups), 14 : 27/01/20 /

(, ) 25% 15 . 27/01/20

1 - 2 / 16 27/01/20 ,

, (brand) , , 17, . 27/01/20 3 : ($1 *) ($0,25 ) ($1,6 ) , . (, ), , , ($0,9 )

* . 18 27/01/20 27/01/20

19 , ; .

; 98 . 53 . 3 . . , . : , ,

20 . ; GPS. : (340), 35% . , . .

27/01/20 Cemex 21 . . . .

. 27/01/20 27/01/20 : . , .

. . 22 , , ... , , . (Computer-Based Information Systems) , ... . 23

27/01/20 , 1 , 1907, 13,6 . / , . . . , 24 .

27/01/20 UPS ; , , . UPS . . . .

. . (, & , , , /). : , , / , . 25 27/01/20 27/01/20

26 1 . ,

, . Compaq, IBM. (25 ). 27 1997 -- (Just-In-Time, JIT): . , .

. . 27/01/20 Dell 28 27/01/20 ! (N. Carr, Harvard Business Review, 2003) 29 , , , , .

, . , , . 27/01/20 1. ; , - , . 2. / ; ;

3. ; 30 : , , , ,... 27/01/20 (1-3) 4. ; . ; ; 5. ;

31 ; ; , , ; 27/01/20 (4-5) Information overload - : (www)

. : ; ; ; (data mining) (information 32 visualization) 27/01/20 27/01/20 1 , . & . , , , .

, , , . 33 Business processes Built-To-Order Computer-based information system Data mining Digital firm E-business E-commerce Globalization Information economy Information overload 34 Information technology Information visualization Just-In-Time Knowledge-intensive

Knowledge worker Management Information Systems Networked enterprise Outsourcing Systems Analysis & Design 27/01/20 1 2 35 .

. . . & . 36 27/01/20 2 . 27/01/20

4 3 . 2 1

. . 37 (Transaction Processing Systems, TPS) . (commit) (rollback). 38

, . 27/01/20 1 , , , , , . : : 39 27/01/20

, , & Zara Mango, . . 40 Mango 4 5-6 .

: 731 , . 27/01/20 / (& ) / & /

, , 41 27/01/20 (Knowledge Work Systems, KWS) : , , (Office Automation Systems, OAS) , / , , , 42 27/01/20

2 (Management Information System, MIS) . 43 - -, (TPS) (ad-hoc queries) 27/01/20 3

(Decision-Support Systems, DSS) . 44 , , , . . 27/01/20 (Executive Support Systems, ESS) -, .

, , , - - . : 45 ; ; 27/01/20 4 (ESS) / (MIS)

46 (KWS) (DSS) (TPS) 27/01/20 47 27/01/20

48

& 27/01/20 : (TPS)

: , . . CRM (MIS) (ESS) 49 27/01/20 & : . , . , .

(Product Life-cycle Management, PLM): , , . 50 27/01/20 , , , , . (, , ) , (TPS) , , (MIS) 51 (ESS)

27/01/20 . : , , : , , , , , . 52 27/01/20 53

27/01/20 27/01/20 . 54 () () () ()

( ) . . www.OrchidsPaper.com: 50 Downsizing . & 55

27/01/20 27/01/20 ERP: . . ERP . : (), () (, ) ERP; 56

. . : ; JIT delivery 57 27/01/20 Supply Chain Management (SCM) ,

( & ). . 58 27/01/20 ( ) (continuous replenishment) . , . outsourcing: , .

59 27/01/20 SCM - materials requisition - order processing - forecasting demand planning - inventory allocation - order fulfillment invoicing 60 27/01/20 SCM

. . 61 , . 27/01/20 Business process Continuous replenishment

Customer Relationship Management Decision Support System Enterprise Resource Planning Executive Support System Just-In-Time Knowledge Work Systems 62 Management Information Systems Office Automation System Payroll Product Lifecycle Management Supply chain management Transaction Transaction Processing Systems

27/01/20 2 & 3 63 . . . 64 27/01/20

3 , . : : , , 65 . 27/01/20 /

(Standard Operating Procedures, SOP) (;) : 66 Bureaucracies Max Weber, 1911 27/01/20 27/01/20 , . .

. () . 67 , . () , . , , . , , 68. 27/01/20

& : ( ) ( ) ( ) 69 27/01/20 , , , ( ), . . ,

. 10% 500 1919 . 70 27/01/20 . , , , , . . : , , . : ,

71 (CIO) 27/01/20 : . , (1976): . . . , . / . 72

27/01/20 , , . . . (core competence) . . 73 27/01/20 27/01/20

& 74 Generalists

= , = /, , ...

: 1. 2. 3. (1) 75 27/01/20 27/01/20 . . 76

, , - , , , ,

, , , , (ERP) , 27/01/20 77

- : , . : Levi Strauss Personal Pair Outsourcing: . 78 27/01/20 . ,

. (task force) . 79 27/01/20 . JIT Just In Time.

. 80 27/01/20 Wal-Mart: 16 , SCM , 3% : 15 Albertsons: 2305 , 1,4% 81.

: . . . 27/01/20

, . . , . . , 82 . 27/01/20 .

. , Citibank 1977 . . web banking. , . timing: . 83 27/01/20 27/01/20 (niche markets)

84 ( , king-size , Internet). Hilton 7,5 . ( , ) 85. frequent

flyer : , , , . (, , , ) . 27/01/20 , , .

. ( , , ) . 86 27/01/20 87 27/01/20 Baxter Healthcare , ,

, . , , Orchid Paper / , UPS 88 (niche market) 27/01/20 E&J Gallo Winery: 1 , : , 65 .

(2003) . , , : Gallo. 10 + &

89 27/01/20 Gallo / , . , , & (lobby) . American Airlines 1 frequent flyer Citibank. Baxter Healthcare , 90 , . 27/01/20

27/01/20 3 , . . , . . 91 Agency theory Mass customization Bureaucracies (Weber)

Niche market Chief Information Officer Competitive advantage Core competence Customer switching cost Focused differentiation Information Systems department Loyalty program 92 Product differentiation Standard Operating Procedures System analyst Transaction cost theory Virtual enterprise 27/01/20

3 4 93 . . . . 94 27/01/20

4 95

$1 $0.13 $1045 email $1-5 $128 $2.32 $0.7510 $00.25 $2-3 $0.651

. : . , 27/01/20 , - . . ,

- , . . . 96 . 27/01/20 / , . EasyJet . 19 .

97 27/01/20 Napster 1 , 80 . . 2001, . Kazaa, Morpheus, Grokster : peer-to-peer. , Kazaa download 270 . . 98 2002

, . 2003 Apple . iTunes ~0,99. 3 10 CD. 27/01/20 (virtual storefront): . (& ) Amazon (information broker):

, , . . . (transaction broker): . 99 27/01/20 - . eBay : ; :

; : D ; A , 10 ; 27/01/20 (content provider): , , , . . . , . CNN, GettyImages (Portal): . 10 Yahoo, in.gr, MSN 27/01/20

Business to Consumer & & Business to Business & Consumer to Consumer 10 . 27/01/20

27/01/20 Disintermediation 50 !

40 20 : , , 10 (clickstream tracking): : , , , . (web personalization): . 10 . (collaborative filtering).

27/01/20 , 300.000 , 12% . 60 , , . , B2B extranet VWGroupSupply.com 90% . (request for quotation), , , , , 13.200 1,37 . 750 . 100 . 500.000 5.500 10 42 . . 27/01/20

Volkswagen Electronic Data Exchange (EDI) . 80% EDI. (extranets). 10 XML - . 27/01/20 B2B Extranets (credit card): 50-80%

(digital wallet): , (, , ) . . : . : . 10 27/01/20 27/01/20 4 & , & . ,

. . : . (, ) 10 . Business to business (B2B) Business to consumer (B2C) Clickstream tracking Information broker Collaborative filtering Transaction broker Credit card

Transaction cost Digital wallet Virtual storefront Disintermediation Web personalization Dynamic pricing Extranet 10 Portal Request for quotation Search cost 27/01/20 4

5 11 , . . . 11 27/01/20 5 , . ChoicePoint:

. ( ). . 3-6 . 11 ; 27/01/20 (Enron, WorldCom). . . :

11 . 27/01/20 , , . : : . : 11 . 27/01/20

2

/ 11 27/01/20 : : , / : : 11

27/01/20 , . , (). , (). . ( ) .

11 27/01/20 Association for Computing Machinery www.acm.org 11 www.dpa.gr 27/01/20

, , . (1998) (fair use) . Spamming - Cookies 11 27/01/20 (1/5) Spam: ( ) ,

. 65% email spam. , : 13 spam 6,5 . : , ( ;) 12 27/01/20 - , , , . 70 , 95

, look-and-feel. 12 Apple Microsoft Windows . 27/01/20 (2/5) ,

, 12 . 27/01/20 (3/5) 27/01/20 (4/5) (bugs). . ; ,

( ) , 12 . : , , , (ubiquitous computing) . / ; : 12 27/01/20 (5/5)

Accountability Privacy Cookies Professional code of conduct Profiling Computer abuse Computer crime Copyright Intellectual property Liability 12 Spam Spyware Trade secret 27/01/20

5 6 12 , . . . 12 27/01/20

6 . , , (, ). , . 12 27/01/20 : mainframes ( 1960 Univac, DEC, IBM IBM) (1981-)

/ (client/server) (1983-) : storage server, database server, application server, web server (1992-) mainframes, LANs, , 12 27/01/20 27/01/20 Mainfram / es

IBM Dell Novell SAP - HP Microsoft Oracle Mainfram H/Y H/Y e Wintel Wintel IBM 360 Windows Windows Server Unix

Linux Linux - Novell TCP/IP IPX 13 27/01/20 Apache, Microsoft .NET, Java, Unix, Cisco IBM/KPMG /

MS Windows Server, Cisco 13 22% 4% 9% 19% 811 $ 13% 20% Dell, IBM, Sun, HP, Apple 12%

MS Windows, Unix, Linux, Mac OS IBM DB2, MS SQL Server, Oracle, MySQL SAP, Oracle, Microsoft, BEA (blade servers): . (open source) IP ,

, 13 27/01/20 27/01/20 (outsourcing) Qantas Airways: . 30 . , 10 IBM .

. 13 . 900 700 . . (grid computing): . Utility computing on-demand computing:

. IBM, HP . 13 27/01/20 Unix, , , , , . IBM, HP, Dell Linux

13. MS Windows XP $300 MS Office $400 MS Outlook $100 Linux Open Office Mozilla Firefox etc

27/01/20 Linux (total cost of ownership) & " . 2008, 13 150% ", : , IDC #31513, & 2004 : ,

& 27/01/20 Procter & Gamble (80 , 300 : Tide, Clairol, Pampers, Crest, ...) 600.000 (product lifecycle management): , , , , , . 13

wintercorp.com & . 2005: 23TByte: (OLTP) 100TByte: AT&T (). 27/01/20 . ' ,

(database). 13 27/01/20 , (data warehouses), . 13 ,

(data mining). 27/01/20 1990 - ( ). . : 14 . 27/01/20 14

27/01/20 (chat) 1-1 (instant messaging)

& , , 14 (discussion groups) 27/01/20 Virtual private network: . 14 : .

- . . 27/01/20 . : , , . : 14 (, ,

) 27/01/20 Wireless Fidelity (Wi-Fi) IEEE . , , , , Bluetooth : 11-54Mbps : 10-50 14 Hotsp ot

27/01/20 Radio Frequency Identification: . RFID : , , : . RFID : , . 14 ( , , , ) 27/01/20 RFID

( Praktiker) RFID () . 14 , : RFID CD & DVD . DVD.

, () . ; Marks & Spencer . . 27/01/20 Metro AG Blade server

IP telephony Chat IT infrastructure Client / server Mainframes Data mining Open-source software Data warehouse Database Discussion groups Grid computing Instant messaging 14 Outsourcing RFID label

Total cost of ownership Virtual private network Wi-Fi 27/01/20 6 7 14 . . . 15 27/01/20

7 , . : 15 27/01/20 / '' '.

, , : hotspot . (), 15 , hotspot. 27/01/20 (virus) . (worm) (trojan horse)

'' (spyware) . www.trendmicro.com, 01/11/05 15 27/01/20 (spoofing) Sniffing

. (denial of service) 15 . 27/01/20 (identity theft)

, , , , (Phishing) . 27/01/20 Patch: (bugs) . , . /

: (;) 15 &

60.000 , 12 . , 413 $ 13/5/2004 . . , . , . 31/5/2004. , , . ;

15 , '' . 1/6 . 3/6, . , . 72.000 RBoC.

. 27/01/20 Royal Bank of Canada (downtime) 99,999% 9 (fault tolerance): ''. (load balancing) (mirroring) (cluster) 15 27/01/20 (Chief Security

Officer, CSO) . (risk assesement): 15 (disaster recovery planning) , , 27/01/20 (access control) (authentication)

(firewall) Network address translation (proxy server) Intrusion detection system (antivirus) 15 (encryption) (message integrity) 27/01/20 ,

(, ). : 16 ( & ) 27/01/20 Antivirus Cluster Denial of service Digital certificate Downtime Fault tolerance Firewall Hotspot Identity theft

Load balancing 16 Mirroring Software patch Phishing Sniffing Spoofing Spyware Static IP Trojan horse Virus Worm 27/01/20 7 8

16 ( ERP). . . 16 27/01/20 8 27/01/20 (, ERP)

. . & 16 : ,

. (best practices) . SAP 3.000 16. 27/01/20 , (customization): .

. , . 16 27/01/20 Nestle SAP R/3 500 80 . , .

16 27/01/20 27/01/20 16 Upstream -

Supply chain: , , . Downstream - 27/01/20 : Supply Chain Counc

& 16

: Demand planning: ; : , JIT . 17 27/01/20 (pushbased model): . Build-to-stock:

'' . (pull-based model): . 17 Build-to-order: : Wal-Mart Dell Computers 27/01/20 ' ' . .

: '' 80% 20% . 17 (Customer Relationship Management, CRM): , , , . 27/01/20

, , (partner relationship management, PRM). (employee relationship management, ERM) , , . CRM: Siebel ( Oracle), Salesforce.com, SAP, Oracle, Peoplesoft ( Oracle). 17 27/01/20 , , () (lead)

(call center), () 17 , (bundling), 27/01/20 CRM . . , CRM. : ,

(, , ). CRM 17. : ( ). , . 27/01/20

CRM Mercedes & Saab 17 . . . 27/01/20

(, , ) () ( ). ( ). 17 27/01/20 27/01/20 ERP Novartis , 77.000 , 140

SAP ( SAP/R3 ). 17SAP. , , . ,

. 17 27/01/20 27/01/20

8 (ERP) , . '' . 18 Best practices Build-to-order Build-to-stock Call center Customer relationship management Customization Employee relationship

management ERP Market lead Partner relationship management Pull-based model Push-based model Demand planning Supply chain Downstream Upstream 18 27/01/20 8

9 18 . . . 18 27/01/20 9 , .

- . 18 . () () . : , , , . 27/01/20

: -: , . : / 18 / . 27/01/20

(deregulation): , , , Schneider National , , , , : , / : (& ) . , 18 . 27/01/20 : Information Systems Plan

, , : h/w, s/w, db, / / 18 : , : h/w, s/w, db, , ,

, , 27/01/20 (Enterprise analysis business systems planning) . (Strategic analysis critical success factors)

. (34) + + - . ( ) - . . 18 27/01/20

27/01/20 / / reator, 18 U = User,

19

1. : / 2. : , 3. : 4. : .

27/01/20 (4 ), ( , ), . . : . 2 .

19 : . , . : , , , . 27/01/20

, , , . . , , , 1-2 , . 19 : (Ford Motor Co) .

( ). . 75%. 27/01/20 Business process reengineering Workflow Management

, . , , , , , . 19 27/01/20 Total quality .

. , . : 19 1. 2. 3. 4.

5. 27/01/20 , . , ... 19 27/01/20

. . . : , , , , . 19 27/01/20 9 Business process reengineering Business systems

planning Conversion plan Critical success factors Enterprise analysis 19 Information systems plan Paradigm shift Total quality Work flow management 27/01/20 9

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