Smart+Shanghai+2008 09 05

Be Smart! Ivar Jacobson with Pan Wei Ng, Ian Spence and Kurt Bittner [email_address]

First a question…. How good are we at software development? Quality: Cost: Low High Low High Value for Money: Poor Good Timeliness: On-Time Late User Experience Bad Good Secure / Reliable: Low High Potential: Low High

Some people feel we are this good ,[object Object]

It certainly seems like … … we need to get better! Quality: Cost: Low High Low High Value for Money: Poor Good Timeliness: On-Time Late User Experience : Bad Good Low High Potential: Limited Open Ended Secure / Reliable:

Is Software Development a Fashion Industry? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],The software industry keeps looking for silver bullets © 2008 Ivar Jacobson International This is unsmart!

What can we do about it? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],The software industry keeps looking for silver bullets © 2008 Ivar Jacobson International THERE IS NO SILVER BULLET! This is unsmart!

What can we do about it? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],The software industry keeps looking for silver bullets © 2008 Ivar Jacobson International We have to work smarter! This is unsmart!

Agenda ,[object Object],[object Object],[object Object],[object Object]

Agenda ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],© 2008 Ivar Jacobson International

Unsmart with Requirements A constant in software development is that requirements always change ,[object Object],[object Object],This is unsmart! © 2008 Ivar Jacobson International Thou shalt work with fixed requirements for fixed prices

Smart with Requirements ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],I understand your needs, let’s work together to make sure we develop the right system for the right price. This is smart! © 2008 Ivar Jacobson International

Unsmart with Architecture This is unsmart! © 2008 Ivar Jacobson International Two extremes: The single most important determinant of a software system’s quality is the quality of its architecture Mr Supposedly Agile No architecture Just Code Refactor later Mr Enterprise Architect on Ivory Tower I’ll design everything up front

Unsmart with Modeling ,[object Object],© 2008 Ivar Jacobson International This is unsmart! Mr Hacker Model Nothing Just Code user : Clerk mainWnd : MainWnd fileMgr : FileMgr repository : Repository document : Document gFile : GrpFile 9: sortByName ( ) L 1: Doc view request ( ) 2: fetchDoc( ) 5: readDoc ( ) 7: readFile ( ) 3: create ( ) 6: fillDocument ( ) 4: create ( ) 8: fillFile ( ) Window95 ¹®¼°ü¸® Å¬¶óÀÌ¾ðÆ®.EXE Windows NT ¹®¼°ü¸® ¿£Áø.EXE Windows NT Windows95 Solaris ÀÀ¿ë¼¹ö.EXE Alpha UNIX IBM Mainframe µ¥ÀÌÅ¸º£ÀÌ½º¼¹ö Windows95 ¹®¼°ü¸® ¾ÖÇÃ¸´ Document FileManager GraphicFile File Repository DocumentList FileList user mainWnd fileMgr : FileMgr repository document : Document gFile 1: Doc view request ( ) 2: fetchDoc( ) 3: create ( ) 4: create ( ) 5: readDoc ( ) 6: fillDocument ( ) 7: readFile ( ) 8: fillFile ( ) 9: sortByName ( ) Æ¯Á¤¹®¼¿¡ ´ëÇÑ º¸±â¸¦ »ç¿ëÀÚ°¡ ¿äÃ»ÇÑ´Ù. ÈÀÏ°ü¸®ÀÚ´Â ÀÐ¾î¿Â ¹®¼ÀÇ Á¤º¸¸¦ ÇØ´ç ¹®¼ °´Ã¼¿¡ ¼³Á¤À» ¿äÃ»ÇÑ´Ù. È¸é °´Ã¼´Â ÀÐ¾îµéÀÎ °´Ã¼µé¿¡ ´ëÇØ ÀÌ¸§º°·Î Á¤·ÄÀ» ½ÃÄÑ È¸é¿¡ º¸¿©ÁØ´Ù. Actor A Use Case 1 Use Case 2 Actor B Use Case 3 GrpFile read( ) open( ) create( ) fillFile( ) rep Repository name : char * = 0 readDoc( ) readFile( ) (from Persistence) FileMgr fetchDoc( ) sortByName( ) DocumentList add( ) delete( ) Document name : int docid : int numField : int get( ) open( ) close( ) read( ) sortFileList( ) create( ) fillDocument( ) fList 1 FileList add( ) delete( ) 1 File read( ) read() fill the code.. Mr Analysis and Design Standards Model everything Now we also have modeling languages

Unsmart with Documentation ,[object Object],This is unsmart! Thou shalt follow the document template I give you to document every part of the system. © 2008 Ivar Jacobson International Vision Document Template Architecture Description Template Use Case Specification Template

Unsmart with Process ,[object Object],New Way of Working This is unsmart! © 2008 Ivar Jacobson International I want to be agile I like to have some of unified process Let me start with CMMI, maybe Does not work I cannot get it together Unified Process Agile CMMI CMMI Project Lead

Smart with process ,[object Object],[object Object],Use a practice-based approach such as EssWork Practices are separate but composable Practices come from any source in the world Improve in small steps © 2008 Ivar Jacobson International Existing Way of Working

Smart with process ,[object Object],[object Object],Use a practice-based approach such as EssWork Practices are separate but composable Practices come from any source in the world Improve in small steps © 2008 Ivar Jacobson International New Way of Working This is smart!

Smart+Shanghai+2008 09 05

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