Full Text Available
Note: Clicking the button above will open the full text document at the original institutional repository in a new window.
P-Pascal : a data-oriented persistent programming language
Bibliography: pages 187-199.
Saved in:
| Main Author: | |
|---|---|
| Other Authors: | |
| Format: | Thesis |
| Language: | English |
| Published: |
Department of Computer Science
2016
|
| Subjects: | |
| Tags: |
No Tags, Be the first to tag this record!
|
| _version_ | 1867613261042548736 |
|---|---|
| access_status_str | Open Access |
| author | Berman, Sonia |
| author2 | MacGregor, Ken |
| author_browse | Berman, Sonia MacGregor, Ken |
| author_facet | MacGregor, Ken Berman, Sonia |
| author_sort | Berman, Sonia |
| collection | Thesis |
| description | Bibliography: pages 187-199. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/17084 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:33:19.547Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2016 |
| publishDateRange | 2016 |
| publishDateSort | 2016 |
| publisher | Department of Computer Science |
| publisherStr | Department of Computer Science |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/17084 P-Pascal : a data-oriented persistent programming language Berman, Sonia MacGregor, Ken Computer Science Bibliography: pages 187-199. Persistence is measured by the length of time an object is retained and is usable in a system. Persistent languages extend general purpose languages by providing the full range of persistence for data of any type. Moreover, data which remains on disk after program termination, is manipulated in the same way as transient data. As these languages are based on general purpose programming languages, they tend to be program-centred rather than data-centred. This thesis investigates the inclusion of data-oriented features in a persistent programming language. P-Pascal, a Persistent Pascal, has been designed and implemented to develop techniques for data clustering, metadata maintenance, security enforcement and bulk data management. It introduces type completeness to Pascal and in particular shows how a type-complete set constructor can be provided. This type is shown to be a practical and versatile mechanism for handling bulk data collections in a persistent environment. Relational algebra operators are provided and the automatic optimisation of set expressions is performed by the compiler and the runtime system. The P-Pascal Abstract Machine incorporates two complementary data placement strategies, automatic updating of type information, and metadata query facilities. The protection of data types, primary (named) objects and their individual components is supported. The challenges and opportunities presented by the persistent store organisation are discussed, and techniques for efficiently exploiting these properties are proposed. We also describe the effects on a data-oriented system of treating persistent and transient data alike, so that they cannot be distinguished statically. We conclude that object clustering, metadata maintenance and security enforcement can and should be incorporated in persistent programming languages. The provision of a built-in, type-complete bulk data constructor and its non-procedural operators is demonstrated. We argue that this approach is preferable to engineering such objects on top of a language, because of greater ease of use and considerable opportunity for automatic optimisation. The existence of such a type does not preclude programmers from constructing their own bulk objects using other types - this is but one advantage of a persistent language over a database system. 2016-02-17T07:16:50Z 2016-02-17T07:16:50Z 1991 Doctoral Thesis Doctoral PhD http://hdl.handle.net/11427/17084 eng application/pdf Department of Computer Science Faculty of Science University of Cape Town |
| spellingShingle | Computer Science Berman, Sonia P-Pascal : a data-oriented persistent programming language |
| thesis_degree_str | Doctoral |
| title | P-Pascal : a data-oriented persistent programming language |
| title_full | P-Pascal : a data-oriented persistent programming language |
| title_fullStr | P-Pascal : a data-oriented persistent programming language |
| title_full_unstemmed | P-Pascal : a data-oriented persistent programming language |
| title_short | P-Pascal : a data-oriented persistent programming language |
| title_sort | p pascal a data oriented persistent programming language |
| topic | Computer Science |
| url | http://hdl.handle.net/11427/17084 |
| work_keys_str_mv | AT bermansonia ppascaladataorientedpersistentprogramminglanguage |