G-LOG - A GRAPH-BASED QUERY LANGUAGE

doi:10.1109/69.390249

1995-06-01

PRE

Letizia Tanca

DOI：10.1109/69.390249

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摘要

En 中文

In this paper we introduce G-Log, a declarative query language based on graphs, which combines the expressive power of logic, the modeling power of complex objects with identity and the representation power of graphs. G-Log is a nondeterministic complete query language, and thus allows the expression of a large variety of queries. We compare G-Log to well-known deductive database languages, and find that it is the only nondeterministic and computationally complete language that does not suffer from the copy-elimination problem. G-Log may be used in a totally declarative way, as well as in a ''more procedural'' way. Thus, it provides an intuitive, flexible graph-based formalism for nonexpert database users.

Keyword:

DEDUCTIVE DATABASES

GRAPH-BASED DATABASES

DATABASE THEORY

DATABASE ALGORITHMS

COMPLEX OBJECTS

DATA MODELS

DATABASE PROGRAMMING LANGUAGES

FIRST-ORDER LOGIC

COMPLETENESS

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期刊

IEEE Transactions on Knowledge and Data Engineering

IF:

10.4

论文数:

6.8K

被引数:

3.2W

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