Change the DT model design.

Motivation:

• No distinction between CDT defined in CCTs and User-definable BDT.

• Inappropriate to add CDT AWD PRI data when adding BDT SC.

• Must copy the same SCs and AWD PRI data for each duplicate inheritance step. and trank and reflect all rows copied when base SC changes.

As-Is:

Proposal:

1. Separate CDT / BDT tables to separate the user-definable data and invariant data.

2. The CDT only has mapping data with the primitive value, and only the BDT has the mapping data with the XBT.

3. The BDT use the based CDT’s AWD PRI data and managed the code list / agency id list restriction data by BDT_PRI_RESTRI table.

4. Like as ACC-based ACC, The SCs that defined by based BDT are used current BDT.

   1. To change the property of DT_SC, the corresponding level of BDT must be revised.

Example:

• BDT Tax_ Code. Type use the SCs from based DT's.

Tax_ Code. Type

Tax_ Code Content. Type

Code Content. Type

Code_1E7368. Type

Code. Type

List Idenfier

List Agency Idenfier

List Version Idenfier