JDBC API is a Java API that can access a Relational Database.
JDBC stands for Java Database Connectivity It is a standard Java API for database-independent connectivity between the Java programming language and databases.
With JDBC APIs we can do the following with database:
Making a connection to a database
Creating SQL statements
Executing that SQL queries in the database
Viewing & Modifying the resulting records
The JDBC API provides the following interfaces and classes:
DriverManager: manages a list of database drivers.
Driver: interface handles the communications with the database server.
Connection : interface with all methods for contacting a database.
Statement : submits the SQL statements to the database.
ResultSet: holds data retrieved from a database after executing an SQL query using Statement objects.
SQLException: handles any errors that occur in a database application.
The java.sql and javax.sql are the primary packages for JDBC 4.0.