Bi project notes create parent and child dimensions

Procedure:

Parentoriginid is actually the corresponding parentoriginid. Its usage must be a parent to represent such a parent-child dimension.

View the originid attribute. usage is the key. Note that the child level in the parent-child relationship hierarchy must be the key attribute of the dimension, so the usage in originid must be the key.

Note that each dimension has only one attribute, and the usage attribute can be set as a key. Here, do not confuse dimension attributes with database fields (attributes). Keys in dimension attributes may be composed of compound primary keys consisting of one or more fields in the database, this key can only have one dimension attribute.
If it is a parent-child dimension,The value of the usage attribute with only one attribute is set to parent.The usage attribute values of all other attributes are regular.

Deploy and browse the attribute hierarchy.

Bi project notes create parent and child dimensions