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corrected links to images (thx for providing the diagrams, @kitenco)
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gernotstarke committed Jul 7, 2016
1 parent b9e6bf4 commit 509afa2
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Expand Up @@ -23,7 +23,7 @@ development with actual data.
A problem can be the amount of hardware that is needed to keep all the temp-stores if you have a mass of data.
Also it can be very expensive to implement the DAA.

image::../../../resources/images/improvement-approaches/butterfly.png["Butterfly-Methodology", title="Butterfly-Methodology"]
image::improvement-approaches/butterfly.png["Butterfly-Methodology", title="Butterfly-Methodology"]

===== Experiences

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29 changes: 1 addition & 28 deletions src/main/asciidoc/patterns/improve/chicken-little-strategy.adoc
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@@ -1,31 +1,4 @@
[[chicken-little-strategy]]
==== [pattern]#Chicken-Little Strategy#

===== Intent


===== Description


===== Experiences


===== Risks


===== Applicability

===== Consequences


===== Also Known As

===== Related Patterns

* test

===== References

* test

// end of list
to be completed...
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Expand Up @@ -16,7 +16,7 @@ grow as the migration progresses. Eventually the target
system should perform all the functionality of the
legacy system and the old legacy system can be retired.

image::../../../resources/images/improvement-approaches/composite.png["Composite-Database-Approach", title="Composite-Database Approach"]
image::improvement-approaches/composite.png["Composite-Database-Approach", title="Composite-Database Approach"]

During the migration, the old legacy system and its
target system form a composite information system, as
Expand Down Expand Up @@ -58,12 +58,6 @@ the added complexity introduced by the co-ordinator.
(taken from BISBAL, J. et.al.)


===== Experiences


===== Risks


===== Applicability

The Composite Database approach is
Expand All @@ -75,10 +69,6 @@ some which are semi-decomposable and others which
are non-decomposable, i.e. what is known as a Hybrid
Information System architecture.

===== Consequences


===== Also Known As

===== Related Patterns

Expand All @@ -89,4 +79,4 @@ Information System architecture.
* BISBAL, J. et.al.; A Survey of Research into Legacy System Migration. Technical Report TCD-CS-1997-01, Computer Science Department, Trinity College Dublin, 1997. http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.50.9051


// end of list

17 changes: 2 additions & 15 deletions src/main/asciidoc/patterns/improve/database-first-approach.adoc
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Expand Up @@ -21,7 +21,7 @@ legacy applications to access the database environment in the target side of the
Fig. 1. This gateway translates and redirects these calls forward to the new database service. Results returned
by the new database service are similarly translated for used by legacy applications.

image::../../../resources/images/improvement-approaches/databaseFirst.png["Database-First-Approach", title="Database-First-Approach"]
image::improvement-approaches/databaseFirst.png["Database-First-Approach", title="Database-First-Approach"]

The main advantage of this approach is that once the legacy data has been migrated, the latest programming
languages and reporting tools can be used to access the data providing immediate productivity
Expand Down Expand Up @@ -62,19 +62,6 @@ module by module, without an influence on the legacy system. As the migration is
legacy system can be shut down.


===== Experiences


===== Risks


===== Applicability


===== Consequences


===== Also Known As

===== Related Patterns

Expand All @@ -85,4 +72,4 @@ legacy system can be shut down.
* BATEMAN, A. und J.P.MURPHY: Migration of Legacy Systems. Working Paper: CA-2984, School of Computer Applications, Dublin City University, Ireland 1994
* BISBAL, J. et.al.; A Survey of Research into Legacy System Migration. Technical Report TCD-CS-1997-01, Computer Science Department, Trinity College Dublin, 1997. http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.50.9051

// end of list

15 changes: 1 addition & 14 deletions src/main/asciidoc/patterns/improve/database-last-approach.adoc
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Expand Up @@ -22,7 +22,7 @@ employed to convert calls from the newly created
applications and redirect them to the legacy database
service, as shown in Fig. 1.

image::../../../resources/images/improvement-approaches/databaseLast.png["Database-Last-Approach", title="Database-Last-Approach"]
image::improvement-approaches/databaseLast.png["Database-Last-Approach", title="Database-Last-Approach"]

If the legacy database service is to be migrated to a
relational database management service, then the target
Expand Down Expand Up @@ -61,19 +61,6 @@ may be unacceptable
(taken from BISBAL, J. et.al.)


===== Experiences


===== Risks


===== Applicability


===== Consequences


===== Also Known As

===== Related Patterns

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