Foundation of Documentum (2)

2.4 object type

DocumentumAll content in corresponds to an object.FolderOrWorkflow,Document.However, not all object types are forcibly inherited and some independent objects exist.

 

R_object_idObject Property 1

Automatically generated when a new object is createdR_object_id, 16Long String, inDocbaseIs a unique value.

The first2BITs are type Identifiers (Type identifiers),Represents the basic type of the object.

For example:R_object_id 090015558000c629.'09'RepresentsDm_document

 

2.5 attribute type

Attribute types are classified into different categories:

1) Single/repeatingWhether the attribute values are single or multiple;

2)Read/write/Read-Only The read/write attributes can be modified by users or applications (A _Attributes starting with ") can only be modified by the application, but only attributes are controlled by the server.

3)Computed attributes This attribute is generated by the server at runtime and is not an inherent storage attribute.

 

2.6 dql

Document Query Language

AndSQLSimilarly,DqlIt can be used to add, delete, modify, and search for objects.

Select r_object_id from dm_document where object_name = 'sampledocument. xml'

DqlThree methods are available:

1)Perform quick query on the interface;

2)UseDFCFor query;

3)CallIdqlDirectly query.

Running path:

C: "Documentum" product "6.0" bin "idql32.exe

 

2.7 API

APIPassIapiInterface Usage

UseAPIA function can be used to create, query, modify, and delete objects.

Get, C, 0900223280023fc2, object_name

•Get: A Server API method used to retrieve information about a special attribute value

•C: Signifies the current docbase session

•0900223280023fc2:R_object_idOf the object in question

•Object_name: Name of attribute whose value needs to be retrieved

 

Running path:

C: \ Documentum \ product \ 6.0 \ bin \ IApi32. ExE