The confidential agreement must be reasonable in order to be enforced. In determining adequacy, courts will consider several factors, including the interests of the disclosing and receiving parties, the duration of the secrecy of the information, the relationship between the parties, and the interests of the public. This is a contract by which the parties agree not to disclose the information covered by the agreement. An NDA creates a confidential relationship between the parties, usually to protect any type of confidential information and proprietary or trade secrets. Therefore, an NDA protects non-public business information. Like all treaties, they cannot be applied if the contractual activities are illegal. DDNs are often signed when two companies, individuals or other entities (such as partnerships, companies, etc.) are considering doing business and need to understand the processes used in the other`s activities to assess the potential business relationship. DDAs may be “reciprocal”, meaning that both parties are limited in their use of the materials supplied, or may restrict the use of materials by a single party. An employee may be required to sign an NDA or NDA-type agreement with an employer to protect trade secrets. . . .