Algebra and Query Language for A Historical Data Model
نویسندگان
چکیده
منابع مشابه
Choosing a Data Model and Query Language for Provenance
The ancestry relationships found in provenance form a directed graph. Many provenance queries require traversal of this graph. The data and query models for provenance should directly and naturally address this graph-centric nature of provenance. To that end, we set out the requirements for a provenance data and query model and discuss why the common solutions (relational, XML, RDF) fall short....
متن کاملA Data Model and Query Language for Distributed Service Discovery
In a large heterogeneous distributed system spanning administrative domains such as a DataGrid, it is often desirable to maintain and query dynamic and timely information about active participants such as services, resources and user communities. This paper develops a suitable database and query model as well as a generic and dynamic data model for such database systems. Unlike in the relationa...
متن کاملQuery Algebra for Semistuctured Data
With the tremendous growth of World Wide Web (WWW) data, there is an emerging need for effective information retrieval at the document level. Several query languages such as XML-QL, XPath, XQL, Quilt and XQuery are proposed in recent years to provide faster way of querying XML data, but they still lack of generality and efficiency. Our approach towards evolving a framework for querying semistru...
متن کاملA Relational Algebra as a Query Language for Temporal DATALOG
This paper introduces a temporal relational algebra as a query language for temporal deductive databases, i.e., Temporal Datalog programs. In Temporal Datalog programs, temporal relationships among data are formalized through temporal operators, not by an explicit reference to time. The minimum model of a given Temporal Datalog program is regarded as the temporal database the program models int...
متن کاملA Logical Query Language for an Object-Oriented Data Model
We report on our experience in designing and prototyping ROLL, a logical query language under which object-oriented databases conforming to the model deened in 17, 18] can be seen as deductive object-oriented databases. The main contribution of ROLL is to demonstrate the possibility of pursuing for the object-oriented case the same research strategy used in the last decade to extend relation da...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Computer Journal
سال: 1990
ISSN: 0010-4620,1460-2067
DOI: 10.1093/comjnl/33.1.11