Ask the Expert

What is the relationship of "tier" when referring to ODBC?

What is the relationship of "tier" when referring to ODBC?

    Requires Free Membership to View

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).

This was first published in March 2002

There are Comments. Add yours.

TIP: Want to include a code block in your comment? Use <pre> or <code> tags around the desired text. Ex: <code>insert code</code>

REGISTER or login:

Forgot Password?
By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Privacy
Sort by: OldestNewest

Forgot Password?

No problem! Submit your e-mail address below. We'll send you an email containing your password.

Your password has been sent to: