DB entities desiring to enter into a DB contract with CDB must be prequalified with CDB under the A/E prequalification rules and/or the contractor prequalification rules prior to any submittal of qualifications or interest for a specific project and prior to entering a contractual relationship with CDB. For DB entities consisting of more than one independent firm (e.g., joint ventures or partnerships), each firm must be prequalified with CDB under the appropriate rule.