Wednesday, 14 March 2012

Java Interview Questions: – Can you explain the main components of JDBC?

This is the most practical oriented Java Interview Questions which may be asked during the Interview by the Interviewer.

Driver Manager:
  • Manages a list of database drivers.
  • Matches connection requests from the java application with the proper database driver using communication
Driver:
  • The database communications link, handling all communication with the database.
  • Normally, once the driver is loaded, the developer need not call it explicitly.
Connection
  • Interface with all methods for contacting a database
  • Represents communication context, i.e., all communication with database is through connection object only.
Statement
  • Encapsulates an SQL statement which is passed to the database to be parsed, compiled, planned and executed.
Result Set
  • The ResultSet represents set of rows retrieved due to query execution
Data source
  • is a facility for storing data
  • Data Source may point to RDBMS, file system, any DBMS
See the following video on Inheritance between beans and Spring: -



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