Oracle Data Integrator repositories

There are two types of repositories:

1.  Master repositories
2. Work repositories

These repositories are data bases stored in RDBMS. Usually there will be one master repository and several work repositories attached to the master repository. 

Master repository: Master repository stores the information defined by topology manager and security navigator. Master Repository stores the following information 

1. Security Information i.e. information about users, profiles and access privileges 
2. Topology information including technologies, Data servers, physical and logical schemas , contexts, agents and languages
3. ODI versions and objects 

Work Repository: Work repository should always attached to a master repository. 

Work repository stores the information defined in Designer navigator . It stores the following information: 

1. Data models: metadata, constraints, references, data lineage, etc 
2. Projects: interfaces, packages, procedures, folders, knowledge modules, etc 
3. Scenarios, scheduling information and logs Work repository contents manged by designer and operator.