is meta data defines data about data code example
Example: meta data
It is used for to get column information not the actual data of column
Common methods are getColumnCount and getColumnLabel
//ResultSetMetaData itself does not contains any row data
ResultSetMetaData rsmd = rs.getMetaData();
// Metadata -- data about the data
// ResultSetMetaData -- data about the ResultSet object that
contain our resulting rows and columns
// for example column names, column counts .. and more