Relationship between brain and memory
The relationship is often made in philosophy of mind, because brain and memory and there is complimentary relation leading to the brain and memory relationship.
Brain is defined as the physical and biological organ contained within the skull, responsible for all electromechanical neuronal process, where the memory is mental attribute, such as belief or desires. The memory is also a level of cognition given to the brain by people, to help in communication and description. The human mind and brain is similar to the computers hardware and software where brain is hardware which allows to store the information and software contains mass information.
Hence the brain and memory have complimentary relation where one is useless in lack of another.