Applications of Logic Databases by Oris Friesen, Gilles Gauthier-Villars (auth.), Raghu

By Oris Friesen, Gilles Gauthier-Villars (auth.), Raghu Ramakrishnan (eds.)

The premise in the back of constructing robust declarative database languages is compelling: by way of permitting clients to specify their queries (and their integrity constraints) in a transparent, non-operational means, they make the user's job more uncomplicated, and supply the database process with extra possibilities for optimization. Relational database structures supply a impressive evidence that this premise is certainly legitimate. the preferred relational question language, SQL, is predicated upon relational algebra and calculus, i.e., a small fragment of first-order good judgment, and the convenience of writing queries in SQL (in comparability to extra navigational languages) has been a major think about the industrial good fortune of relational databases. it's famous that SQL has a few vital boundaries, regardless of its luck and recognition. significantly, the question language is non-recursive, and aid for integrity constraints is proscribed. certainly, spotting those difficulties, the newest ordinary, SQL-92, presents elevated help for integrity constraints, and it truly is expected that the successor to the SQL-92 general, referred to as SQL3, RECURSIVE UNION operation [1]. common sense database structures have will contain a focused on those extensions to the relational database paradigm, and a few platforms (e.g., Bull's DEL prototype) have even integrated object-oriented good points (another extension prone to look in SQL3).

Show description

Read or Download Applications of Logic Databases PDF

Similar logic books

The logical trader: applying a method to the madness

This ebook is kind of reliable, and offers substantial insights into systematic intraday buying and selling. the elemental formulation mentioned, in spite of the fact that, comprises a selected variable: "A", which varies inventory to inventory, and from commodity to commodity, which isn't, despite the fact that provided by means of the author, neither is his werb-site presently on hand, so far as i'll notice.

Wertschopfungstiefe von Unternehmen: Die strategische Logik der Integration

Walter J. Koch widerlegt die pauschale Annahme, dass die vertikale Integration als corporation der Wertschöpfungskette nicht mehr zeitgemäß ist, und verdeutlicht, dass diese those sich einseitig an den unterstützenden Aktivitäten und der Produktion orientiert. Unter Einbeziehung der gesamten Wertschöpfungskette - strukturiert in Forschung & Entwicklung, Produktion, advertising, Großhandel, Einzelhandel und Kundendienst - zeigt er auf, dass die vertikale Integration nach wie vor sehr attraktiv ist.

New Essays in Free Logic: In Honour of Karel Lambert

Unfastened common sense - i. e. , good judgment freed from existential presuppositions usually and with appreciate to singular phrases specifically- started to come into its personal as a box of study within the Nineteen Fifties. As is the case with such a lot of advancements in Western philosophy, its roots will be traced again to historic Greek philo­ sophy.

Logic and Scientific Methods: Volume One of the Tenth International Congress of Logic, Methodology and Philosophy of Science, Florence, August 1995

This can be the 1st of 2 volumes comprising the papers submitted for e-book via the invited contributors to the 10th overseas Congress of good judgment, technique and Philosophy of technology, held in Florence, August 1995. The Congress used to be held below the auspices of the foreign Union of historical past and Philosophy of technological know-how, department of common sense, technique and Philosophy of technological know-how.

Additional info for Applications of Logic Databases

Sample text

Example: Each value in the column 'Type' in the 'Addresses' table should be one of 'BLG', 'LST', or 'SER'. This would be expressed in LDL as: AddressTypeViolation(TelNumber, AdrUype)

Client/Server or distributed access to several relational DBMSs, either through an interface built into the LDL++ system (for Sybase™, and possibly DB/2), or through an Extensible Services Switch (ESS), which enables the LDL++ system to communicate with multiple DBMSs from different vendors through a single interface. Q-Data: Improving Data Quality 37 • Preferred database access is through Remote Data Access (RDA) standard via SQL Access Group (SAG)/Call Level Interface (CLI) Application Program Interface (API).

Another application discussed in [16] involves establishing correct location information in the input data with the help of a reference location database, and using that reference database to clean previously created location data in an application database. , Parlog) to DBMSs [2], and to compiled, set-ata-time processing of logic queries against a database. Some of the significant efforts that also involve significant prototyping and in some cases performance evaluation include BERMUDA [6], BrAID [17], the LDL++ system [1] and Coral [14, 18, 15].

Download PDF sample

Rated 4.31 of 5 – based on 11 votes
Posted In CategoriesLogic