Выражение встречается в следующем контексте:
Establish procedures to validate Hazardous Material Minimization
Centers low and high inventory levels with those inventory levels in
Relational Supply for the same items to ensure Hazardous Material
Minimization Centers high limits do not exceed Relational Supply
high limits.
7. Establish procedures that require unissued hazardous material in
the Hazardous Material Minimization Centers be counted as on-hand
inventory before reordering Relational Supply stock.

Заранее спасибо

Для сравнения: relational database - реляционная база данных

The relational supply chain involves the linkage between a supplier, the
organization, and its customer to achieve maximum benefit. The supplierbuyer
relationship is a key component and can yield important benefits
including maintaining competitive costs in the short and long term to allow
a competitive advantage in the market. This relationship involves a
collaborative effort and desire to work together for mutual goals and the
active pursuit of new ways to prosper together.