What is the relationship of "tier" when referring to ODBC?
By submitting your email address, you agree to receive emails regarding relevant topic offers from TechTarget and its partners. You can withdraw your consent at any time. Contact TechTarget at 275 Grove Street, Newton, MA.
Technically, an application can use JDBC to connect directly to a database server, or it can use an "intermediary" in-between. These are the commonly used JDBC configurations:
2 Tier: Application loads a JDBC driver and connects to the database (no intermediary)
3 Tier: The application communicates with an intermediary (a Servlet, a JSP, an EJB, or a CORBA service). The intermediary uses JDBC (or embedded SQL statements) to connect to the database
1 Tier: That's a special case: The application and the database all run in the *same JVM*. That's interesting only if you develop embedded applications or a server product (e.g., a JMS server).
Have a question for an expert?
Please add a title for your question
Get answers from a TechTarget expert on whatever's puzzling you.