The document discusses continuous delivery and database evolution. It proposes maintaining a baseline database and applying incremental SQL scripts or "deltas" to evolve the database in a controlled and reversible manner. This allows the database to safely evolve alongside application code changes through multiple versions.

6. Kent Beck

24. A
B

27. "Agile" team
Analysis + Design Centralized QA IT Operations
Development Integration + QA Release and operation
Customer Testing + Showcase
Iteration 0 1 2 3 4
The "last mile"

28. "Agile" team
Analysis + Design Centralized QA IT Operations
Development Integration + QA Release and operation
Customer Testing + Showcase
Iteration 0 1 2 3 4
The "last mile"

29. "Agile" team
Analysis + Design Centralized QA IT Operations
Development Integration + QA Release and operation
Customer Testing + Showcase
Iteration 0 1 2 3 4
The "last mile"

30. "Agile" team
Analysis + Design Centralized QA IT Operations
Development Integration + QA Release and operation
Customer Testing + Showcase
Iteration 0 1 2 3 4
The "last mile"

34. Mary Poppendieck Tom Poppendieck

35. Product Product
Product Final testing
opportunity planning and Development Release
discovery and approval
assessment estimation
2
3 days 1 week 10 days 7 weeks 1 week
hours
Value-added time
Elapsed time
1 week 10 days 3 days 5 days 2 days

36. Product Product
Product Final testing
opportunity planning and Development Release
discovery and approval
assessment estimation
2
3 days 1 week 10 days 7 weeks 1 week
hours
Value-added time
Elapsed time
1 week 10 days 3 days 5 days 2 days

38. Delivery team Version control Build & unit Automated User acceptance Release
tests acceptance tests tests
Check in
Trigger
Feedback
Check in
Trigger
Feedback Trigger
Feedback
Check in
Trigger
Feedback Trigger
Feedback Approval
Feedback Approval

39. Increasing confidence in build's production readiness
Environments become more production-like
User
acceptance
testing
Commit stage
Compile
Acceptance Production
Unit test
test stage
Analysis
Build installers
Performance
testing
Faster feedback

44. Customer
Delivery team
Constant flow of new features into production

49. Professor Plum P1-2 P3-4
P1 P2 P3 P4 P5
P1-5
B1 B2
Mainline
B1 B2
P1-5
B1 B2
G1-6
G1 G2 G3 G4 G5 G6
G1-2 G3
Reverend Green
G1-6
Professor Plum P1 P2 P3 P4 P4
P1 P2 P3 P4 P5
P1 P3 P4 P5
P2 B2 G3
G1 B1 G2
Mainline
B1 B2
B1
B2 P4-5
G1 P1-2 G2 P3 G3 G4 G5 G6
G1 G2 G3 G4 G5 G6
Reverend Green G3 G4
G2

50. Professor Plum P1-2 P3-4
P1 P2 P3 P4 P5
B1 B2
Mainline
B1 B2
B1 B2
G1 G2 G3 G4 G5 G6
G1-2 G3
Reverend Green

51. Professor Plum P1-2 P3-4
P1 P2 P3 P4 P5
P1-5
B1 B2
Mainline
B1 B2
P1-5
B1 B2
G1-6
G1 G2 G3 G4 G5 G6
G1-2 G3
Reverend Green
G1-6

52. Professor Plum P1-2 P3-4
P1 P2 P3 P4 P5
P1-5
B1 B2
Mainline
B1 B2
P1-5
B1 B2
G1-6
G1 G2 G3 G4 G5 G6
G1-2 G3
Reverend Green
G1-6

53. Professor Plum P1-2 P3-4
P1 P2 P3 P4 P5
P1-5
B1 B2
Mainline
B1 B2
P1-5
B1 B2
G1-6
G1 G2 G3 G4 G5 G6
G1-2 G3
Reverend Green
G1-6

55. Professor Plum P1 P2 P3 P4 P4
P1 P2 P3 P4 P5
P1 P3 P4 P5
P2 B2 G3
G1 B1 G2
Mainline
B1 B2
B1
B2 P4-5
G1 P1-2 G2 P3 G3 G4 G5 G6
G1 G2 G3 G4 G5 G6
Reverend Green G3 G4
G2

56. Config File
some.jsp
[featureToggles]
wobblyFoobars: true <toggle name=wobblyFoobars>
flightyForkHandles: false ... various UI elements
</toggle>
other.java
forkHandle = (featureConfig.isOn(‘flightlyForkHandles)) ?
new FlightyForkHander(aCandle) :
new ForkHandler(aCandle)

58. Framework Framework
fluid
2.2.12 2.2.12
Pricing engine Pricing engine
1.0.3 2.2.13 1.0.3
static
CDS pricing library
1.0.4
1.3.1 1.3.1
CDS pricing library
1.3.2

61. 001_create_initial_tables.sql:
CREATE TABLE customer (
id BIGINT GENERATED BY DEFAULT AS IDENTITY (START WITH 1)
PRIMARY KEY,
firstname VARCHAR(255),
lastname VARCHAR(255)
);
002_add_customer_date_of_birth.sql
ALTER TABLE customer ADD COLUMN dateofbirth DATETIME;
--//@UNDO
ALTER TABLE customer DROP COLUMN dateofbirth;

62. Baseline
Database

63. Baseline
Database

64. DB
Metadata
Baseline Apply
Database Deltas

65. DB
Metadata
Baseline Apply
Database Deltas
Fail Fast

66. DB
Metadata
Baseline Apply
Apply
Apply
Apply Test!
Database Deltas
Deltas
Deltas
Deltas

67. app v205 app v230 app v234 app v241 app v248
compatible with db compatible with db compatible with db compatible with db compatible with db
v13 and v14 v14 v14 v14 and 15 v15
DB DB DB
version version version
13 14 15
app v205 migrate app v230 app v234 app v234 migrate app v248
deployed db to v14 deployed deployed deployed db to v15 deployed
Time

72. v1.1 v1.1 v1.1

73. v1.1 v1.1 v1.1

74. v1.1 v1.1 v1.1
v1.2 v1.2 v1.2

75. v1.1 v1.1 v1.1
v1.2 v1.2 v1.2

76. v1.1 v1.1 v1.1
v1.2 v1.2 v1.2

89. ?