The video below covers all about the different keys in an RDBMS. They are used to establish and identify relationships between tables and also to uniquely identify any record or row of data inside a table.Ī Key can be a single attribute or a group of attributes, where the combination may act as a key. Keys are very important part of Relational database model.
ER Model: Generalization and Specialization.
0 kommentar(er)
