Maintaining Triangle Queries under Updates

نویسندگان
چکیده

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Maintaining Data Cubes under Dimension Updates

OLAP systems support data analysis through a mul-tidimensional data model, according to which data facts are viewed as points in a space of application-related \dimensions", organized into levels which conform a hierarchy. The usual assumption is that the data points reeect the dynamic aspect of the data warehouse, while dimensions are relatively static. However, in practice, dimension updates ...

متن کامل

Maintaining Partial Path Consistency in STNs under Event-Incremental Updates

Efficient management of temporal constraints is important for temporal planning. During plan development, many solvers employ a heuristic-driven backtracking approach, over the course of which they maintain a so-called Simple Temporal Network (STN) of events and constraints. This paper presents the Vertex-IPPC algorithm, which efficiently enforces partial path consistency when an STN is extende...

متن کامل

Answering FO+MOD Queries Under Updates on Bounded Degree Databases

We investigate the query evaluation problem for fixed queries over fully dynamic databases, where tuples can be inserted or deleted. The task is to design a dynamic algorithm that immediately reports the new result of a fixed query after every database update. We consider queries in first-order logic (FO) and its extension with modulo-counting quantifiers (FO+MOD), and show that they can be eff...

متن کامل

Maintaining consistent results of continuous queries under diverse window specifications

Continuous queries applied over nonterminating data streams usually specify windows in order to obtain an evolving –yet restricted– set of tuples and thus provide timely and incremental results. Although sliding windows get frequently employed in many user requests, additional types like partitioned or landmark windows are also available in stream processing engines. In this paper, we set out t...

متن کامل

Queries Independent of Updates

This paper considers the problem of detecting independence of a queries expressed by datalog programs from updates. We provide new insight into the independence problem by reducing it to the equivalence problem for datalog programs (both for the case of insertion and deletion updates). Equivalence, as well as independence, is undecidable in general. However, algorithms for detecting subclasses ...

متن کامل

ذخیره 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: ACM Transactions on Database Systems

سال: 2020

ISSN: 0362-5915,1557-4644

DOI: 10.1145/3396375