Servelt Database Connectivity: JDBC, ODBC, Connection Pooling and

Question

For an exam question, I am looking at the various ways in which a servlet can make a connection to a database connection. So far I have

1. JDBC
2. ODBC
3. Database Pooling

But the question asks for 4, and I cannot seem to find the 4th alternative. Does it actually exist?

Answer 1

I suspect you might want to look at the Java Persistence API. Go Google JPA.

Answer 2

I would add JNDI lookup and connecting directly using DriverManager . And what is database pooling ? Do you mean connection pooling?

On the other hand if they are asking about high-level technologies: jdbc -> mybatis -> hibernate -> jpa .

Answer 3

A servlet can't really use ODBC it might be able to use a JDBC via ODBC driver, but the servlet sees only ODBC.

Similarly Connection Pooling just pools JDBC connections. The connections are just made via JDBC.

Since the expected answer is 4 they might be asking for the 4 types of JDBC drivers