1. DIB 1 Some Experiences in a S.F. Diffusion. Prof. Giuseppe Visaggio Department of Computer Science University of Bari visaggio@di.uniba.it

2. DIB 2 Enactment and Use of the SF in SER_Lab APPBANK RCVCHARTREFILANTO Software Factory

3. DIB 3 Software Projects APPBANKCHARTREFILANTORCV Business Domain Banking ManufacturingInsurance SW Platform COBOL: 653 programs (348 on line, 305 Batch); 70 ISAM Files with a total of 9000 fields COBOL System working on a mainframe- terminals architecture COBOL Program that manages 71 ISAM Files, for a total of 1,775 fields COBOL System, 2,099 programs; 127 Files, nearly all ISAM; 13,742 fields overall. # SW Developers 20 (4+16) 30 (4+26) 12 (2+10) 50 (12+27) # SF People 2223

4. DIB 4 Software Experience Base APPBANKCHARTREFILANTORCV Projects Purpose Renewal of a working Software System Migration of a software system and monitoring of the new system decay Feasibility study for renewal of a working software system SEB Contents /Metric plan for maintenance process quality evaluation; /Renewal processes; /Decision model for choosing a suitable renewal process /Application architecture with information hiding; /Software Aging symptoms and metrics /Economic value model for Renewal Process /Economic value model vs quality of software system /Software Aging symptoms and metrics (the metrics were modified) /Decision model for choosing a suitable Renewal Process (with modified metrics) /Software Aging symptoms and metrics (the metrics were modified) /Decision model for choosing a suitable Renewal Process (with modified metrics) /Economic value model for Renewal Process

5. DIB 5 …Software Experience Bases APPBANKCHARTREFILANTORCV H1:Has SEB involved cultural changes? Only for the developers of the renewal process YESNO No, but it was very interesting H2: Was the organization’s policy well supported by the SEB? No, it was seen only as a mean to improve the maintenance and transferability of application knowledge No, it was seen only as a mean to economically migrate to the new architecture. NO H3: Were the economical benefits relevant? YES H4: Was SEB used within the company after the project? NO Only for a short period of time NO

6. DIB 6 Conclusions /The Knowledge acquired was not shared within the company. Usually its use was kept only by the group involved in the SEB building. /The SEB has always been used to introduce innovations. /The management seems to accept the innovation only when the available or used technologies are unable to solve the company’s problems. /Furthermore the solution is no longer used by management after overcoming the problems. For example in the APPBANK project the SEB was used only for the time necessary to make the maintainability and transferability of the application sustainable. After executing the renewal project the renewed application was adopted but the SF was no longer used.