BS 6690:1986
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
View Superseded by
Specification for a data descriptive file for information interchange
Hardcopy , PDF
English
30-04-1986
15-06-1995
National foreword
Committees responsible
Specification
0 Introduction
1 Scope and field of application
2 Conformance
3 References
4 Definitions
5 Interchange file
6 Description of user data types and structures
7 Coded character set extensions
Annexes
A Guidelines for implementation
B Data field examples
C DDF model and logical record structure
Tables
1 Delimiters and their uses
2 Compound data field descriptors
Figures
1 File and file label schematic representation
2 Expanded logical schematic representation of data
descriptive file
3 DDR schematic
4 DDR leader schematic
5 DDR entry map schematic
6 DDR directory entry schematic
7 File control field schematic
8 DR leader schematic
9 DR leader schematic
10 DR entry map schematic
11 DR directory entry schematic
12 Level 2 data descriptive area schematic
representation
13 Examples of ordered rooted trees
14 Generic structure of a logical record
15 Instance of a user data tree
16 Binary tree corresponding to the rooted tree shown
in figure 15
Media-independent file and data record descriptions; description of data elements, vectors, arrays and hierarchies; a data descriptive file comprising a data descriptive record and companion data records; three levels of interchange depending on the complexity of the structure.
| Committee |
ICT/1
|
| DocumentType |
Standard
|
| Pages |
32
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy |
| BS 7567-3:1992 | Electronic transfer of geographic information (NTF) Specification for implementing NTF using BS 6690 |
| BS 7567-2:1992 | Electronic transfer of geographic information (NTF) Specification for implementing plain NTF |
| BS 7567-1:1992 | Electronic transfer of geographic information (NTF) Specification for NTF structures |
| BS 5769-1:1979 | Specification for magnetic tape cassette and cartridge labelling and file structure, for information interchange Label standard version 1 |
| ISO/IEC 2022:1994 | Information technology — Character code structure and extension techniques |
| BS 4732-2:1979 | Specification for magnetic tape labelling and file structure for data interchange. Label standard version 3 |
| ISO 6093:1985 | Information processing — Representation of numerical values in character strings for information interchange |
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