About MySQL replication. MySQL replication is a process that allows you to easily maintain multiple copies of a MySQL data by having them copied automatically from a master to a slave database.
From Wikipedia, the free encyclopedia. A United States teaching credential is a basic multiple or single subject credential obtained upon completion of a bachelor's degree, from a college or university that holds regional accreditation, and prescribed professional education requirements.
In other states it might be called a license or a certification. A credential is the permit your state issues after it confirms that you've met the necessary requirements. A credential is only issued to individuals who have met all the state's requirements.