The Query Management Facility
نویسنده
چکیده
Data from a relational data base can be displayed in reports, changed, and otherwise controlled using a program called Query Management Facility (QMF). An overview of this program is presented and is followed by a discussion comparing equivalent forms of various queries expressed in two distinctly different languages. Both languages are designed for use with relational data and are supported by QMF.
منابع مشابه
انتخاب مناسب‌ترین زبان پرس‌وجو برای استفاده از فرا‌‌پیوندها جهت استخراج داده‌ها در حالت دیتالوگ در سامانه پایگاه داده استنتاجی DES
Deductive Database systems are designed based on a logical data model. Data (as opposed to Relational Databases Management System (RDBMS) in which data stored in tables) are saved as facts in a Deductive Database system. Datalog Educational System (DES) is a Deductive Database system that Datalog mode is the default mode in this system. It can extract data to use outer joins with three query la...
متن کاملData Modeling and Querying in the PIQ Image DBMS
Image Database Management Systems (IDBMS) aim to store large collections of images, and to support eecient content-based retrieval. In this paper we explore the idea of image data modeling as a tool for describing image domains, with the twofold objectives of guiding feature extraction and incorporating semantics into the extracted summaries of images. We discuss the implementation of these ide...
متن کاملPrivate Key based query on encrypted data
Nowadays, users of information systems have inclination to use a central server to decrease data transferring and maintenance costs. Since such a system is not so trustworthy, users' data usually upkeeps encrypted. However, encryption is not a nostrum for security problems and cannot guarantee the data security. In other words, there are some techniques that can endanger security of encrypted d...
متن کاملThe NZDIS Project: An Agent-based Distributed Information Systems Architecture
This paper describes an architecture for building distributed information systems from existing information resources, based on software agent and distributed object technologies. An agent-based architecture is used, with messages exchanged via the FIPA agent communication language (ACL). Novel features of this system include the use of standards from the object-oriented programming community s...
متن کاملNon-zero probability of nearest neighbor searching
Nearest Neighbor (NN) searching is a challenging problem in data management and has been widely studied in data mining, pattern recognition and computational geometry. The goal of NN searching is efficiently reporting the nearest data to a given object as a query. In most of the studies both the data and query are assumed to be precise, however, due to the real applications of NN searching, suc...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- IBM Systems Journal
دوره 23 شماره
صفحات -
تاریخ انتشار 1984