Data sources Data sources are used to create an import set so that data can be processed, if necessary, prior to being mapped onto a production table. Table 1. Data Source Types Type Description File Data is in a recognized file format, accessible locally or remotely through several file retrieval methods. JDBC Data is in a database, accessible using JDBC. ServiceNow supports Oracle, MySQL, Sybase, DB2 Universal, and MS SQL Server drivers. LDAP Data is in an LDAP server, accesible through the LDAP or LDAPS ports, 389 and 636 respectively.