What is Schema? A description of how data is organized in a database and the relationships between different entities. Entity? An Entity is a unique unit of information. It can be represented as a table in the database. Field? There are Fields that describe the properties of an Entity. Field corresponds to Column. (필드는 열에 해당됩니다.) Record? Items stored in Table. Record corresponds to Row. If Column has Country, Row has South Korea, Japan, America, etc....