Entity
Name DATABASE INSTANCE
Definition A Database Instance represents processes and the portion of an Oracle database that runs in memory.

Attribute
Name Definition Datatype Required Is PK Is FK
Database Instance Identifier A Database Instance Identifier is a unique value assigned to represent a particular instance of a database. INTEGER Yes Yes No
Database Instance Name A Database Instance Name is the word or words by which an exact database instance is known by. VARCHAR(50) Yes No No
Application Database Host Identifier
An Application Database Host Identifier is a unique value that represents the assignment of  an Application Host and the related Application Database
INTEGER No No Yes