[54] FILE STORING SYSTEM FOR MANAGING A RELATIONAL DATA BASE INCLUDING INFORMATION OF A PARENTAL RELATIONSHIP
[75] Inventors: Masayuki Nakayama; Yukiyasu
Kobayashi; Yasuhiro Suzuki, all ol
Oyama, Japan
[73] Assignee: Fujitsu Limited, Kanagawa, Japan
[ * ] Notice: This patent issued on a continued prosecution application filed under 37 CFR 1.53(d), and is subject to the twenty year patent term provisions ol 35 U.S.C. 154(a)(2).
[21] Appl. No.: 08/524,420
[22] Filed: Sep. 6, 1995
[30] Foreign Application Priority Data
Oct. 20, 1994 [JP] Japan 6-255231
[51] Int. C I. G06F 17 00
[52] U.S. CI 707/203; 707/201; 707/101;
707/102; 707/103
[58] Field of Search 395/602, 612,
395/616, 621; 707/1-206
[56] References Cited
U.S. PATENT DOCUMENTS
4,827,462 5/1989 Flannagan et al 369/32
A file storing system for management ol a relational data base compiles records by connecting closely each other in a data storing file, according to the relationship ol master and slave records expressing each instance ol data and load records ol a module unit. The file storing system comprises a relation definition file, a data page file, a data page, a page map file, and a meta map file. The file storing system lurther comprises a first means for managing the relationship ol master and slave records, a second means for managing data pages, a third means for managing data maps, a fourth means for managing meta maps, and executes inserting or removing the records belonging to the relations and modules, loading the records ol a module unit to a main data storage device, and lurther scanning a record unit via the relations.
18 Claims, 28 Drawing Sheets
