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1. Database
REFACTORING
with
Tim Berglund
1

2. @tlberglund
#liquibase
2

3. 3

4. 4

5. Managing Code Change
5

6. Managing Database
Change
6

7. Agile
Database
Development
7

8. Refactoring
Evolutionary
Automated
Data
Testing Modeling
Agile
Database
Development
Source
Sandboxes
Control
8

9. Evolutionary
Data
Modeling
9

10. Refactoring
10

11. Automated
Testing
11

12. 12

13. Automated
Testing
13

14. Source
Control
14

15. All Database Artifacts
DDL
Extract/Migration Scripts
Reference Data
Stored Procedures
Triggers
15

16. Source
Control
16

17. Sandboxes
17

18. I would
totally fail at
database agility
without this
sandbox!
Sandboxes
18

19. but my boss
says database
sandboxes are
bad.
Sandboxes
19

20. I need
tooling,
Mom.
Sandboxes
20

21. 21

22. Refactoring
Evolutionary
Automated
Data
Testing Modeling
Agile
Database
Development
Source
Sandboxes
Control
22

23. Refactoring
Evolutionary
Automated
Data
Testing Modeling
Agile
Database
Development
Source
Sandboxes
Control
23

24. + Apache 2.0 License
24

25. 25

26. DB2
26

27. Changelog
27

28. databaseChangeLog
changeSet 1
changeSet 2
...
changeSet n
28

29. changeSet
author id
refactoring 1
refactoring 2
...
refactoring n
29

30. Current changeLog
changeSet 1 ✓ changeSet 1
changeSet 2 ✓ changeSet 2
changeSet 3
changeSet 4 ✓ changeSet 4
changeSet 5 changeSet 5
30

31. <write-in-xml>
<all-of-your>
<sql
seriously=”yes”
but-its-not=”that bad” />
<trust><me/></trust>
</all-of-your>
</write-in-xml>
31

32. Changelog
<changeSet author="tlberglund (generated)" id="1236660747556-11">
<createTable tableName="scshoppingcart">
<column autoIncrement="true" name="id" type="INT">
<constraints nullable="false"/>
</column>
<column name="userid" type="INT">
<constraints nullable="false"/>
</column>
<column name="lastmodified" type="DATETIME"/>
<column name="name" type="VARCHAR(50)"/>
</createTable>
</changeSet> Get over
<changeSet author="tlberglund" id="spot-1-1-2">
it!
<renameTable oldTableName="scscrubrecordwarehouse"
newTableName="scrub_record_log" />
</changeSet>
32

33. Changelog
changeSet(author: "tlberglund" id: "1236660747556-11") {
createTable(tableName: "scshoppingcart") {
column(autoIncrement: "true" name: "id" type: "INT") {
constraints(nullable: false)
}
column(name: "userid" type: "INT") {
constraints(nullable: false)
}
column(name: "lastmodified" type: "DATETIME")
column(name: "name" type: "VARCHAR(50)")
}
} Coming
changeSet(author: "tlberglund" id: "spot-1-1-2") {
Soon!
renameTable(oldTableName: "scscrubrecordwarehouse"
newTableName: "scrub_record_log")
}
33

34. Commands
34

35. generateChangeLog
Reverse
ENGINEERS
writes all that darn
XML
35

36. changeLogSync
Establishes
METADATA
just remember do this one
36

37. update
Issues
actual
Migrates DDL
CHANGES
this is your faithful friend
37

38. tag
Marks
the current
STATE
38

39. rollback
Restores
original
STATE
Usually
AUTOMATIC
39

40. 40

41. Process
41

42. Documentation
http://www.liquibase.com/manual/home
42

43. Refactoring
Evolutionary
Automated
Data
Testing Modeling
Agile
Database
Development
Source
Sandboxes
Control
43

44. Thank You
Tim Berglund
www.augusttechgroup.com
tim.berglund@augusttechgroup.com
@tlberglund
44

45. Photo Credits
Hammer Shattering Wine Glass
http://www.flickr.com/photos/whisperwolf/3486270713
Rusty Drum
http://www.flickr.com/photos/the_justified_sinner/2720599186/
Leaky Pipe
http://www.flickr.com/photos/ceekay/3238528758
C64 Floppy Drive
http://www.flickr.com/photos/moparx/4013824025
Sandbox
http://www.flickr.com/photos/celinesphotographer/326629023
Dog Teaching Water a Lesson
http://www.flickr.com/photos/ninahiironniemi/201905662
Feet in the Sand
http://www.flickr.com/photos/mattsabo17/77433071
45