Descriptor
| Computers | 1 |
| Conceptual Schemes | 1 |
| Confidentiality | 1 |
| Databases | 1 |
| Information Retrieval | 1 |
| Information Storage | 1 |
| Models | 1 |
| Privacy | 1 |
| Program Descriptions | 1 |
| Security | 1 |
Source
Author
| Hsiao, D. K. | 1 |
Publication Type
| Reports - Research | 1 |
Education Level
Audience
Location
Laws, Policies, & Programs
Assessments and Surveys
What Works Clearinghouse Rating
Download full textHsiao, D. K.; And Others – 1974
A description is provided of a conceptual model for a data secure system. The discussion first offers a formal working vocabulary and next, using the intuitive idea of a dichotomy between permissible and impermissible accesses, formalizes the idea with an Extended Logical Data Base and with protection specifications and patterns. These…
Descriptors: Computers, Conceptual Schemes, Confidentiality, Databases
