| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a technology for properly controlling access to a database. <P>SOLUTION: A communication control device 10 comprises a first database 50 and a second database 60 where the identifiers of data stored in a database server are made to correspond to the information on permission/rejection of access to the data, which are stored; a position detecting circuit 32 which acquires communication data for accessing the data of the database server and extracts data of a specified length from a specified position of the acquired communication data, as the data to be compared with the identifier of the data being included; a mask circuit 380 for masking the data other than identifier of data among the extracted data to be compared; a retrieving circuit 30 for retrieving an identifier of the data included in the masked data to be compared from the first database 50; and a process performing circuit 40 which judges permission/rejection of access to the data according to a retrieval result. <P>COPYRIGHT: (C)2009,JPO&INPIT |
