The OpenB modeling engine allows for visual domain model design which are linked to repositories of various kinds. Also versioning and security (authorizations and auditing) are abstracted to keep domain model design simple.

1. Modeling engine
OpenB concepts

2. Create domain models

3. Create domain models
 The modeling engine allows you to create
the following kind of models:
 Simple models
 Authorizable models
 Auditable models
 Versioned models

4. Model types – simple models
 Basic domain model
 With only key and name and description
metadata.

5. Model types – authorizable
 Basic domain model
 With only key and name and description
metadata.
 Owner and access rules for groups and/or
single users.

6. Model types – auditable
 Basic domain model
 With only key and name and description
metadata.
 Last access time and user.
 Moment of creation.
 Moment of last update.

7. Model types – versioned
 Basic domain model
 Versioning is hidden for users.
 Trigger based, for example:
 based on the creation date of a parent model
 Each change creates a new version

8. Model types – versioning – usages
 Allows for change tracking
 Allows for ‘concept versions’
 Allows for data warehousing.

9. Repositories

10. Repositories
 Different types of repositories are
supported.
 Seamless linking of different repository
types.
 Expression based queries for business rules
and view rules.

11. Repositories – seamless linking
 Repository models can use properties of
other repository kinds.
 For example: An SQL repository can have
models with properties linking to an XML
repository.

12. Repositories – expressions
 Internal DSL for querying repositories
 Internal use of Lambda expressions.