Database processing method, apparatus for implementing same, and medium containing processing program therefor
First Claim
1. A database processing method for performing database operations by referencing an external file, comprising the steps of:
- receiving from a database client, a table select request for specifying a table name, a select item, a select condition, and a processing type indicative of which of column data and contents of an external file are to be processed; and
transmitting to the database client column data which meets said select condition, or the contents of an external file indicated by position information in said column data in accordance with the contents of said processing type, and watch information for watching access to said external file.
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Abstract
A database processing method for defining and operating data of file reference type which references a file. A column data insert request for specifying position information indicative of a storage location of a file and watch information for watching the file is received from a database client. A request for watching a file indicated by the position information is issued in accordance with the watch information. The position information and the watch information are stored in a database. The foregoing operations permit data in an external file placed outside a database to be treated as data equivalent to ordinary column data stored in the database to improve the integrity of the database.
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Citations
1 Claim
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1. A database processing method for performing database operations by referencing an external file, comprising the steps of:
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receiving from a database client, a table select request for specifying a table name, a select item, a select condition, and a processing type indicative of which of column data and contents of an external file are to be processed; and
transmitting to the database client column data which meets said select condition, or the contents of an external file indicated by position information in said column data in accordance with the contents of said processing type, and watch information for watching access to said external file.
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Specification