CorrespondenceTable - Properties and Relationships — DDI 4.0 dev documentation

# CorrespondenceTable - Properties and Relationships

## Properties

Name | Type | Cardinality
--- | --- | ---
correspondence | Map | 0..n
effectiveDates | DateRange | 0..1

### correspondence

Set of mappings between nodes that participate in the correspondence.

### effectiveDates

Effective period of validity of the CorrespondenceTable. The correspondence table expresses the relationships between the two NodeSets as they existed on the period specified in the table.

## Relationships

Name | Type | Cardinality
--- | --- | ---
contactPerson | Agent | 0..n
hasPublication | ExternalMaterial | 0..n
maintenanceUnit | Agent | 0..n
maps | StatisticalClassification | 0..n
owner | Agent | 0..n
realizes | Comparison | 0..n
sourceLevel | LevelStructure | 0..n
targetLevel | LevelStructure | 0..n

### contactPerson

The person(s) who may be contacted for additional information about the Correspondence Table. Can be an individual or organization.

### hasPublication

A list of the publications in which the Correspondence Table has been published.

### maintenanceUnit

The unit or group of persons who are responsible for the Correspondence Table, i.e. for maintaining and updating it.

### maps

The Statistical Classification(s) from which the correspondence is made.

### owner

The statistical office, other authority or section that created and maintains the Correspondence Table. A Correspondence Table may have several owners.

### realizes

Class of the Collection pattern realized by this class.

### sourceLevel

Level from which the correspondence is made. Correspondences might be restricted to a certain Level in the NodeSet. In this case, target items are assigned only to source items on the given level. If no level is indicated, source items can be assigned to any level of the target NodeSet.

### targetLevel

Level to which the correspondence is made. Correspondences might be restricted to a certain Level in the NodeSet. In this case, target items are assigned only to source items on the given level. If no level is indicated, target items can be assigned to any level of the source NodeSet.