java database connectivity tutorial

JDBC

jdbc is a java API that is used to connect and execute query to the database .JDBC API uses jdbc drivers to connect to the database.

why use JDBC?

before JDBC,ODBC API was used to connect and execute query to the database .But ODBC API uses ODBC driver that is implemented in c , which is platform dependent and unsecured . So sun micro systems defined own API . 

WHAT IS API?

Application Programming Interface is a document that contains description of all featutres of a s/w.It represents classes and interfaces that software programs can follow to communicate .An API can be created for Apps, Libraries, Operation Sysytem .. etc