Evaluation of Main Memory Join Algorithms for

نویسندگان

  • Sven Helmer
  • Guido Moerkotte
چکیده

Current data models like the NF 2 model and object-oriented models support set-valued attributes. Hence, it becomes possible to have join predicates based on set comparison. This paper introduces and evaluates two main memory algorithms to evaluate eeciently this kind of join. More speciically, we concentrate on subset predicates.

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

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

بهبود به‌روزرسانی پایگاه داده تحلیلی نیمه‌آنی

Near-real time data warehouse gives the end users the essential information to achieve appropriate decisions. Whatever the data are fresher in it, the decision would have a better result either. To achieve a fresh and up-to-date data, the changes happened in the side of source must be added to the data warehouse with little delay. For this reason, they should be transformed in to the data wareh...

متن کامل

Evaluation of Main Memory Join Algorithms for Joins with Set Comparison Join Predicates

Current data models like the NF2 model and object-oriented models support setvalued attributes. Hence, it becomes possible to have join predicates based on set comparison. This paper introduces and evaluates several main memory algorithms to evaluate e ciently this kind of join. More speci cally, we concentrate on the set equality and the subset predicates.

متن کامل

Evaluation of Main Memory Join Algorithms for Joins with Subset Join Predicates

Current data models like the NF2 model and object,-oriented models support set-valued at.t,ribut,t:s. Hence, it, becomes possible to havt> join prcdica.tes ba.sed on set, comparison. This paper int,roduces and evaluates two main memory algorithms to evaluate efficiently this kind of join. More specifically, we concentrate on subset predicates.

متن کامل

Performance evaluation and comparative study between sort-merge join and hash join

Join is the basic key operation in relational databases which facilitates the combination of two relations based on a common key. It is usually an expensive operation and efficient implementation to improve the performance of many database queries. Join is also a memory intensive operation and consequently is directly affected by the performance of memory subsystem. As compared to the join algo...

متن کامل

Massively Parallel NUMA-aware Hash Joins

Driven by the two main hardware trends increasing main memory and massively parallel multi-core processing in the past few years, there has been much research e ort in parallelizing well-known join algorithms. However, the non-uniform memory access (NUMA) of these architectures to main memory has only gained limited attention in the design of these algorithms. We study recent proposals of main ...

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

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 1997