Hackolade Studio has native integration with Git repositories to provide state-of-the-art collaboration, versioning, branching, conflict resolution, peer review workflows, change tracking and traceability. Mostly, it allows to co-locate data models and schemas with application code, and further integrate with DevOps CI/CD pipelines as part of our vision for Metadata-as-Code. Co-located application code and data models provide the single source-of-truth for business and technical stakeholders.

1. Hackolade Tutorial
Model versioning and collaboration
Copyright © 2016-2023 Hackolade 1

2. DevOps infinity loop illustrates continuous flow of dev
2
Dev Ops

3. Design
Data Model
Generate
Schema
Catalog
I
n
t
e
g
r
a
t
e
/
M
i
g
r
a
t
e
Publish
Use
Evaluate
S
p
e
c
i
f
y
Data
Modeler
Data
Architect
Subject
Matter
Expert
Data
Engineer
Data
Analyst
Business
Analyst
Data model lifecycle unified with DevOps applications
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Application
Metadata Dev Ops

4. Role of Data Modeling in an Agile/DevOps context
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Domain-Driven
Design
Physical Data
Modeling
Iterative
Evolution
Fake data
Generation
Optimization
Governance
& Compliance
Maintenance &
Performance,
Documentation
& Facilitation

5. We call this
Metadata-as-Code
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6. Leveraging GIT in Hackolade Studio
• Free, open source, *distributed* version control system
• Very different from traditional *centralized* version control
systems:
• made for Agile teams
• Centralized systems depend on “locking” mechanisms:
decentralised systems no longer use check-in/check-out
• Vocabulary is different: push / pull / pull requests are new
concepts for many data modelers
• The command-line interface to git can be daunting for many data
modelers
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7. Leveraging GIT in Hackolade Studio
• Perfect fit for Hackolade Studio
• Our JSON based file storage format is perfect for Git
• The approach is completely in tune with our love for Agile,
Domain-Driven Data Modeling, and NoSQL
• Plays well with our vision of “Reconciling Business and IT
through a shared understanding of the meaning and
context of data”
• In Hackolade Studio, it is *EASY* to interact with Git
• With Hackolade Studio, business and IT can use the same tool
• With Hackolade Studio, business and IT can leverage the same
single source-of-truth
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8. Data models
Schema contracts
Application code
Git repository DevOps CI/CD
pipeline
Application
Database
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Co-locate data models and schemas with application code
Environments:
• Dev
• Test
• Integration
• Production
ALTER scripts

9. … …
Consumers
Subject area models
Project models
Models
Local
Repo
Local
Repo
Local
Repo
Clone
Push
Pull
Merge …
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Hackolade Studio to Schema Repo workflow
CLI
Schemas
DDL files
OAS files
JSON Schema files
Avro Schema files
…

10. Copyright © 2016-2022 Hackolade
Hackolade’s Metadata-as-Code orchestrates Metadata Pipelines to keep in sync
technical data structures with business-facing data dictionaries
Repository
Human-readable
Models
A
c
t
o
r
s
Design
Models
Data
modelers,
architects,
developers
Technical side
Machine-readable
Schemas
Databases
APIs
Registries
Hubs
Code Classes
Technology
Command-Line
Interface Repository
Schemas
DevOps
CI/CD
Business side
Data
citizens
Metadata
management Catalog
Reverse-engineering
Requirements
Wiki

11. Copyright © 2016-2022 Hackolade 11
Collaboration, version control, change tracking, peer reviews
Remote
Repository
Local
Repository
Pull
Push
Commit
Local
Repository
Commit
Push
Pull
Clone
Pull = Fetch + Merge

12. 4 scenarios to illustrate
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13. Scenario 1
Small conflicting change to the data model cosmetic and auto-resolved
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14. Scenario 2
Small non-conflicting / non-cosmetic change to the data model with
git-based resolution
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15. Scenario 3
Small conflicting change to the data model with git-based resolution
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16. Scenario 4a
Large branch-based changes (minor-fixes and new-features) to the data
model using Pull Requests
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17. Scenario 4b
Large (feature) branch-based change to the data model using Pull
Requests
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18. Reading material
• See Hackolade online documentation
• The Hackolade Blog
• This excellent new book:
MongoDB Data Modeling & Schema Design
• Many of the principles in the book are related to query
driven modeling based on access patterns
• Hackolade’s on social media: LinkedIn page, Twitter page
• Download Hackolade Studio for free
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19. Questions?
Answers!
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