JPS5713563A - Data access system in auxiliary memory device - Google Patents

Data access system in auxiliary memory device

Info

Publication number
JPS5713563A
JPS5713563A JP8731680A JP8731680A JPS5713563A JP S5713563 A JPS5713563 A JP S5713563A JP 8731680 A JP8731680 A JP 8731680A JP 8731680 A JP8731680 A JP 8731680A JP S5713563 A JPS5713563 A JP S5713563A
Authority
JP
Japan
Prior art keywords
record
data
read
area
designated
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
JP8731680A
Other languages
Japanese (ja)
Inventor
Yotaro Miyanishi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP8731680A priority Critical patent/JPS5713563A/en
Publication of JPS5713563A publication Critical patent/JPS5713563A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Data Mining & Analysis (AREA)
  • Databases & Information Systems (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)

Abstract

PURPOSE:To attain a high speed access property and a data independent property, by transferring a data to a read/write part from a control area if a data which is read by referring to a control information is already read in the control area, when repeating a data access. CONSTITUTION:In case of read, when an instruction of CALL SUB is executed, a CPU shifts its execution to a subroutine 9, and executes the following processing by the subroutine 9. At the first time, a record of a designated record No. in a file, which is designated by position information is stored, a record exceeding the record No. is transferred to a control area from an auxiliary memory device, upper and lower limit values of a record stored in the area 8 is stored as a control information, and after that, a data of the designated record No. is transferred to a read/write part 3. At the second time and thereafter, whether a record of a designated record No. exists in the area 8 or not is decided by use of the control information, and if it exists, a data is transferred to the part 3 from the area 8, and unless it exists, the processing is executed in the same way as the first time.
JP8731680A 1980-06-27 1980-06-27 Data access system in auxiliary memory device Pending JPS5713563A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8731680A JPS5713563A (en) 1980-06-27 1980-06-27 Data access system in auxiliary memory device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8731680A JPS5713563A (en) 1980-06-27 1980-06-27 Data access system in auxiliary memory device

Publications (1)

Publication Number Publication Date
JPS5713563A true JPS5713563A (en) 1982-01-23

Family

ID=13911429

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8731680A Pending JPS5713563A (en) 1980-06-27 1980-06-27 Data access system in auxiliary memory device

Country Status (1)

Country Link
JP (1) JPS5713563A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6162124A (en) * 1984-09-03 1986-03-31 Hitachi Ltd Data transfer system
JP2014179086A (en) * 2013-03-13 2014-09-25 Seagate Technology Llc Apparatus, system and method for selecting among non-volatile memory units having different minimum addressable data unit sizes, and computer readable medium

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6162124A (en) * 1984-09-03 1986-03-31 Hitachi Ltd Data transfer system
JP2014179086A (en) * 2013-03-13 2014-09-25 Seagate Technology Llc Apparatus, system and method for selecting among non-volatile memory units having different minimum addressable data unit sizes, and computer readable medium

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