cov_reference_table

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Covariate Reference Table

This table specifies the covariate reference value for every possible job ; i.e., node_id , split_reference_id pair.

cov_reference_id

is the Primary Key for this table.

node_id

This column has type integer and specifies a node by its index in the root node database node table. The root node and all its descendants will appear in this column.

split_reference_id

This column has type integer and it specifies the index of a value in split_reference_table. If split_reference_table is empty (is not empty), the values in this column must be (must not be) null. All the possible split_reference_id values will appear for each node_id value.

covariate_id

This column has type integer and it specifies the covariate by its index in the root_database covariate table. All the possible covariate_id values will appear for each ( node_id , split_reference ) pair.

reference_value

This column has type real and is the reference value for this covariate for the job corresponding to this (node_id, split_reference_id) .