JPH0421041A - Dynamic converting system for file format - Google Patents

Dynamic converting system for file format

Info

Publication number
JPH0421041A
JPH0421041A JP12347690A JP12347690A JPH0421041A JP H0421041 A JPH0421041 A JP H0421041A JP 12347690 A JP12347690 A JP 12347690A JP 12347690 A JP12347690 A JP 12347690A JP H0421041 A JPH0421041 A JP H0421041A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
file
length record
record file
fixed length
file format
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP12347690A
Inventor
Kentaro Misawa
Original Assignee
Nec Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

Links

Abstract

PURPOSE: To execute the access at a high speed with respect to data of a variable length record file by converting dynamically a file format of the variable length record file and a file format of a fixed length record file.
CONSTITUTION: A file allocating means 102 calls a file format converting means 201, based on an allocation request of a file, converts a variable length record file stored in a first data store means 301 to a file format of a fixed length record file and stores it in a second data store means 401, and executes an allocation of the fixed length record file. Subsequently, data of the fixed length record file stored in a second data store means 401 is read and written, the fixed length record file is converted to a file format of the variable length record file and stored in a first data store means 301, and the fixed length record file is released. In such a way, data of the variable length record file can be accessed at a high speed.
COPYRIGHT: (C)1992,JPO&Japio
JP12347690A 1990-05-14 1990-05-14 Dynamic converting system for file format Pending JPH0421041A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12347690A JPH0421041A (en) 1990-05-14 1990-05-14 Dynamic converting system for file format

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12347690A JPH0421041A (en) 1990-05-14 1990-05-14 Dynamic converting system for file format

Publications (1)

Publication Number Publication Date
JPH0421041A true true JPH0421041A (en) 1992-01-24

Family

ID=14861575

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12347690A Pending JPH0421041A (en) 1990-05-14 1990-05-14 Dynamic converting system for file format

Country Status (1)

Country Link
JP (1) JPH0421041A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5388013A (en) * 1992-03-06 1995-02-07 Mitsubishi Denki Kabushiki Kaisha Data storage format conversion method and system, data access method and access control apparatus
EP0676757A2 (en) * 1994-04-08 1995-10-11 Kabushiki Kaisha Toshiba Recording medium having correlation information that represents correlation between physical sectors and logical sectors, recording method for recording data thereto, and reproducing apparatus thereof
JPH07325740A (en) * 1994-05-31 1995-12-12 Hokkaido Nippon Denki Software Kk Information processor
US6587919B2 (en) 1990-09-24 2003-07-01 Emc Corporation System and method for disk mapping and data retrieval
JP2013097388A (en) * 2011-10-27 2013-05-20 Toshiba Corp Data base device and control method for the same

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6587919B2 (en) 1990-09-24 2003-07-01 Emc Corporation System and method for disk mapping and data retrieval
US5388013A (en) * 1992-03-06 1995-02-07 Mitsubishi Denki Kabushiki Kaisha Data storage format conversion method and system, data access method and access control apparatus
EP0676757A2 (en) * 1994-04-08 1995-10-11 Kabushiki Kaisha Toshiba Recording medium having correlation information that represents correlation between physical sectors and logical sectors, recording method for recording data thereto, and reproducing apparatus thereof
EP0676757A3 (en) * 1994-04-08 1997-11-26 Kabushiki Kaisha Toshiba Recording medium having correlation information that represents correlation between physical sectors and logical sectors, recording method for recording data thereto, and reproducing apparatus thereof
JPH07325740A (en) * 1994-05-31 1995-12-12 Hokkaido Nippon Denki Software Kk Information processor
JP2013097388A (en) * 2011-10-27 2013-05-20 Toshiba Corp Data base device and control method for the same

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