3. ORACLE CLOUD INFRASTRUCTURE
AVAILABILITY DOMAIN
COMPUTE VCN
PUBLIC
SUBNET
INTERNET
GATEWAY
PRIVATE
SUBNET
APACHE
WEB SERVER
BASTION
HOST
MYSQL DB
SERVER
INTERNET
4. DATABASE ARCHITECTURE
3-TIER
Presentation Tier
Business Logic Tier
Data Tier
Application Server
(IIS, Apache, NginX, etc)
Client
(Chrome, Firefox, Edge, etc)
Database Server
(MySQL, MariaDB, PostgreSQL, etc)
2-TIER
Client
(C++, .NET, Java, etc)
Database Server
(MySQL, MariaDB, PostgreSQL, etc)
Data Tier
Presentation Tier