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Singh, U. N.
- A Formal Model of ODS Schema in LIPS
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Authors
Affiliations
1 B C Roy Library, Indian Institute of Management Calcutta, Kolkata-700104, IN
2 Department of Library and Information Science, Guru Ghasidas University, Bilaspur (CG), IN
1 B C Roy Library, Indian Institute of Management Calcutta, Kolkata-700104, IN
2 Department of Library and Information Science, Guru Ghasidas University, Bilaspur (CG), IN
Source
Journal of Information and Knowledge (Formerly SRELS Journal of Information Management), Vol 45, No 2 (2008), Pagination: 155-168Abstract
LIPS (Library Information Processing System) which I have proposed during the study for my research. A library system contains books, authors, and users and many types of other materials. The Location in identified for books by a Class Number, authors by authors name, and user by a user name. To execute a query on any of these components the Management Software needs accumulated expression, formulae and rules. Therefore, semantics of an Object Oriented Database System schema greatly depends on the model theory of accumulated expression calculus. Moreover, an ODS schema involves recursive specification. Recursion arises with recursive rules as well as with recursive message definition. In order to uniquely define the semantics of such a schema the structure of models plays an important role. It has been shown during this discussion that for a restricted class of schema, the semantics can be uniquely specified. The intention of this article is to highlight the finding during our study on LIPS regarding the used expression, formulae and rules in the ODS schema. The approach used here is the least fixed-point approach of specification of semantics. In the following discussion we exclude formulae, which involves negation. Unless explicitly mentioned a formula is assumed to be free of negation. The utility of different features of algebra will be clear in subsequent sections when the tools developed here are used in describing the semantics for query processing.Keywords
Library Information Processing System, Object Oriented Database, Fixed-Point Approach, Functional Programming Languages, Calculus of Accumulated Expressions.
References
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- Majumdar (Kamalendu); Singh (U N). Library Information processing system: ODS Data Model. SRELS Journal of Information Management. Vol. 42(2); 2005; p101-130.
- Library Information Processing System: ODS Data Model
Abstract Views :242 |
PDF Views:4
Authors
Affiliations
1 Central Library, Indian Institute of Technology, Kharagpur - 721 302, IN
2 Dept. of Library and Information Sc., Guru Ghasidas University, Bilaspur (CG), IN
1 Central Library, Indian Institute of Technology, Kharagpur - 721 302, IN
2 Dept. of Library and Information Sc., Guru Ghasidas University, Bilaspur (CG), IN
Source
Journal of Information and Knowledge (Formerly SRELS Journal of Information Management), Vol 42, No 2 (2005), Pagination: 101-130Abstract
A library system contains books, authors and users and many types of other material. For books, the location is identified by a Class Number, for author by an author's name and for users by a users' name. Author and book is a one-to-many relationship whereas library and book is a many-to-many relationship. A library can hold many copies of a book, and a book can appear in many libraries. A book and a library enter into a relationship grouping by sharing a copy. This relationship instance has a cost attribute, which states how much the library paid for the book. Patron-library and user- to- book are many-to-many relationships. When a user borrows a book, the transaction creates an instance of the patron and book relationship and attaches a due date attribute to it.
The intention of this article is to highlight the findings during our study on LIPS (Library Information Processing System) regarding the advancement of a conceptual framework for considering a fully integrated library automation system. Although due to the space we would limit the discussion to E-R model and Object Originated model, it is not asserted that what follows constitutes a complete framework, but rather an attempt to take a step towards the development of a framework. The motivation is both intellectual and pragmatic. At an intellectual level, there is curiosity about the nature of things and about how and why they work. At a pragmatic level, there is the incentive that a clearer theoretical understanding might bring about greater effectiveness in practice.
Keywords
Object Data Model, Encapsulation, Inheritance, Data Dictionary, Conceptual Model, Database Administrator, Library Automation, Integrated Library Information System.References
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- Majumdar (Kamalendu); Singh (U N). Integrated Library Management System: Circulation Module. SRELS Journal of Information Management. Vol. 41(1); March 2004; p91-106.
- Integrated Library Management System:Circulation Module
Abstract Views :203 |
PDF Views:4
Authors
Affiliations
1 Indian Institute of Technology, Kharagpur 721 302, West Bengal, IN
2 DLIS, Guru Ghasidas University, Mahanadi Bhaban, Koni, Bilaspur 495 009, Chattisgarh, IN
1 Indian Institute of Technology, Kharagpur 721 302, West Bengal, IN
2 DLIS, Guru Ghasidas University, Mahanadi Bhaban, Koni, Bilaspur 495 009, Chattisgarh, IN