Documentum Object Model

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 Documentum is a enterprise content management (ECM) system developed by EMC Corporation. It uses an object-oriented model to represent and manage digital content and metadata. In this model, content is represented as objects and metadata is stored as properties of those objects.

At the core of the Documentum object model is the "object" itself, which is a logical representation of a piece of content. An object can be a document, an image, a video, or any other type of digital content. Each object has a unique identifier, called an "object ID", which is used to identify and access the object.

Objects in Documentum have a hierarchical relationship, called "folder-subfolder" relationship. An object can be stored in a folder, which can contain other objects and subfolders. This hierarchical structure allows for the organization and grouping of objects in a logical way.

Objects in Documentum also have a set of properties, called "attributes", which describe the object and its content. These attributes can be used to search and filter objects, as well as to display information about the object. Some examples of attributes include the object's name, creation date, and author.

Objects in Documentum can also have relationships with other objects. For example, a document object may have a relationship with a folder object, representing that the document is stored in the folder. Objects can also have relationships with other objects of the same type, such as a parent-child relationship between two document objects. These relationships can be used to represent complex relationships between objects, and can also be used to search and filter objects.

In addition to the core object model, Documentum also includes a number of other features and services to support the management and manipulation of digital content. These include document management and version control, workflow, security and access controls, and integration with other systems.

Overall, the Documentum object model provides a flexible and powerful way to represent and manage digital content. Its hierarchical structure, attributes and relationships allow for the organization and manipulation of content in a variety of ways, making it a popular choice for enterprise content management.

In the Documentum platform, there are several different types of objects that can be used to represent different types of digital content. These include:

  1. dm_document: This is the most basic object type in Documentum, and is used to represent documents such as Word, Excel, and PDF files.

  2. dm_folder: This object type is used to represent a container for other objects, such as documents or subfolders.

  3. dm_sysobject: This is the base object type for all other object types, and is used to represent system-level objects such as users, groups, and access controls.

  4. dm_cabinet: This object type is used to represent a high-level container for other objects, such as documents and folders. Cabinets are often used to organize content by project, department, or other criteria.

  5. dm_process: This object type is used to represent a workflow process in Documentum. It can be used to automate business processes such as document review and approval.

  6. dm_relation: This object type is used to represent a relationship between two or more objects. Relationships can be used to represent parent-child relationships, as well as more complex relationships between objects.

  7. dm_format: This object type is used to represent different file formats, such as PDF, TIFF, and Microsoft Word.

  8. dm_policy: This object type is used to represent a set of rules and actions that can be applied to objects, such as access controls and retention policies.

  9. dm_event: This object type is used to represent events that occur within the Documentum system, such as a document being checked out or a user logging in.

  10. dm_user: This object type is used to represent a user of the Documentum system.These are some of the commonly used object types in Documentum, but there are other object types available as well. The exact set of object types and their properties can vary depending on the specific implementation of Documentum and the customization done by the customer.

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