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source : {
   ... 
   "extractType" : "Database",
   "authentication" : {
       "username" : "username", 
       "password" : "password"}, 
   "database" : {
       "databaseType" : "mysql",
       "hostname" : "my.databaseserver.com",
       "port" : "3306"
       "databaseName" : "database",
       "query" : "SELECT * FROM IncidentReport", 
       "deltaQuery" : "SELECT * FROM IncidentReport WHERE REPORTDATETIME >= (SELECT ADDDATE(CURDATE(),-7))",
       "deleteQuery" : "",
       "primaryKey" : "NID",
       "title" : "CCN",
       "snippet" : "OFFENSE",
       "publishedDate" : "REPORTDATETIME"
   }, 
   "useExtractor" : "none",
   ...
}