Data Obiects a Data sets are made up of data objects a data object represents an entity ■上 xamples e sales database: customers store items sales medical database: patients, treatments university database: students, professors, courses Also called samples, examples, instances, data points, objects, tuples a Data objects are described by attributes a Database rows -> data objects columns ->attributes 同济大学软件学院 ool of Software Engineering. Tongpi Unversity5 Data Objects ◼ Data sets are made up of data objects. ◼ A data object represents an entity. ◼ Examples: ◆ sales database: customers, store items, sales ◆ medical database: patients, treatments ◆ university database: students, professors, courses ◼ Also called samples , examples, instances, data points, objects, tuples. ◼ Data objects are described by attributes. ◼ Database rows -> data objects; columns ->attributes