It include below point as below
- Structural of Relation Database:
- Each relation have attribute name,which is unique.Each domain is automatic if all member is automatics.The special value is null.There is also used schema used as attribute constraints and integrity constraints.The current value of relation are specified by table.
- Database consists of multiple relationship.Information about an enterprise is broken into parts sorting it.
- Keys are sufficient to identify the unique tuple of each possible relation.Types of key used as primary key,candidate key,foreign key etc.
