इकाई(An object (such as a customer, item, or employee) that shares a set of defined attributes or characteristics, and that is used to manage rules for data); निकाय(The representation of all the instances of a particular record. When changes are made to a record type, those changes will affect all individual records of that type)
एंटिटी(An object (such as a customer, item, or employee) that shares a set of defined attributes or characteristics, and that is used to manage rules for data)
