標題: Titlebook: Advances in Data Base Theory; Volume 2 Hervé Gallaire,Jack Minker,Jean Marie Nicolas Book 1984 Plenum Press, New York 1984 Base.Volume.addi [打印本頁] 作者: Limbic-System 時間: 2025-3-21 16:53
書目名稱Advances in Data Base Theory影響因子(影響力)
書目名稱Advances in Data Base Theory影響因子(影響力)學科排名
書目名稱Advances in Data Base Theory網(wǎng)絡公開度
書目名稱Advances in Data Base Theory網(wǎng)絡公開度學科排名
書目名稱Advances in Data Base Theory被引頻次
書目名稱Advances in Data Base Theory被引頻次學科排名
書目名稱Advances in Data Base Theory年度引用
書目名稱Advances in Data Base Theory年度引用學科排名
書目名稱Advances in Data Base Theory讀者反饋
書目名稱Advances in Data Base Theory讀者反饋學科排名
作者: 巧思 時間: 2025-3-21 21:28
Fernando León-Solís,Hugh O’Donnelldecomposition is compatible with the (classical) vertical decomposition. Algorithms for horizontal decompositions can be used as preprocessors for the decomposition algorithm(s) for the vertical decomposition.作者: 集合 時間: 2025-3-22 04:11 作者: 清晰 時間: 2025-3-22 08:28
https://doi.org/10.1007/978-3-030-54867-4ficiently. In particular we show that the computational cost of each block of constraint monitoring code introduced within the original unmonitored code is bounded by a constant. It is also shown how this approach provides a simple and unified solution to the problem of integrity control and query/ transaction optimization.作者: 加強防衛(wèi) 時間: 2025-3-22 12:21 作者: 圖表證明 時間: 2025-3-22 13:17 作者: contradict 時間: 2025-3-22 19:56
óscar García Agustín,Malayna Raftopoulosare useful in the context of a database design methodology where the first level of specification consists of a purely declarative definition of both static and transition constraints. A sequence of results about the solvability of the decision problem of these languages is also presented that helps assess the expressive power of the languages.作者: 大暴雨 時間: 2025-3-22 21:24 作者: 清澈 時間: 2025-3-23 04:25
S. F. Van Amerongen,J. Van Paradijsneral belief that cyclic J-schemas were “bad” Schemas. In this chapter we show that some cyclic J-schemas are in fact useful..We introduce the notion of a simple schema. A schema S is simple if there exists an acyclic schema S’ such that S and S’ satisfy the same set of multi-valued dependencies. The main results in the chapter are as follows:作者: 巨頭 時間: 2025-3-23 06:24
Compiling Constraint-Checking Programs from First-Order Formulas978-1-349-06754-1作者: Deduct 時間: 2025-3-23 13:30 作者: NATAL 時間: 2025-3-23 17:47
On Algebraic Query Processing in Logical Databases978-1-137-31406-2作者: 復習 時間: 2025-3-23 18:28
On the Undecidability of Equivalence Problems for Relational Expressions作者: 卵石 時間: 2025-3-23 23:12 作者: seruting 時間: 2025-3-24 03:28 作者: 無政府主義者 時間: 2025-3-24 08:13 作者: 遺產(chǎn) 時間: 2025-3-24 11:52
Book 1984 meaning of logic and databases explored at the first workshop. Because of the broader coverage, and because we anticipated further workshops, the second book was entitled, Advances in Database Theory - Volume 1. The book "Logic and Databases" should be considered Volume 0 of this series.作者: EWE 時間: 2025-3-24 15:05
r intended meaning of logic and databases explored at the first workshop. Because of the broader coverage, and because we anticipated further workshops, the second book was entitled, Advances in Database Theory - Volume 1. The book "Logic and Databases" should be considered Volume 0 of this series.978-1-4615-9387-4978-1-4615-9385-0作者: 泥土謙卑 時間: 2025-3-24 20:19 作者: 牲畜欄 時間: 2025-3-25 01:23 作者: Dorsal-Kyphosis 時間: 2025-3-25 04:54
when I came to Strathclyde University, and I soon found myself involved again with the bacteria which I had not touched since completing my doctoral thesis. In 1973 lG. Carr, C. V. Cutting and G. c. Whiting organised the 4th Long Ashton Symposium Lactic Acid Bacteria in Beverages and Food and from m作者: Melatonin 時間: 2025-3-25 08:07 作者: 巨頭 時間: 2025-3-25 13:27 作者: 描繪 時間: 2025-3-25 16:40
,Exile and Clandestinity (1939–50),er to a query is defined, and two types of tables (extended relations), previously introduced in order to represent incomplete information are examined from the point of view of their application for algebratization of the query answering process. We show also how techniques introduced here could be作者: syring 時間: 2025-3-25 20:24 作者: 付出 時間: 2025-3-26 01:17 作者: 間諜活動 時間: 2025-3-26 06:04 作者: 凈禮 時間: 2025-3-26 09:53
en he offered me a place with him to work for a PhD on the carbohydrate meta- bolism of some lactic rods isolated from English beer breweries by himself and others, notably Dr Dora Kulka. He was particularly interested in their preference for maltose over glucose as a source of carbohydrate for grow作者: 可卡 時間: 2025-3-26 16:25 作者: 共和國 時間: 2025-3-26 17:41 作者: interlude 時間: 2025-3-26 21:11 作者: BATE 時間: 2025-3-27 04:43
Properties of Views and their Implementation used until mid 20th century. This work is unique in that it provides an archaeological and analytical interpretation of the content of these metallic objects: inscriptive, pictorial or both. As the component chapters show, these coin-like objects represent a wealth of Chinese traditional folk belie作者: 半身雕像 時間: 2025-3-27 07:21
Back Matterconversational proficiency in interlingual & intercultural c.This book explores diverse cultural and linguistic landscapes, unraveling the fusion of language, culture, and corporatism. It breaks new ground by examining lesser-known linguistic-cultural aspects of corporate communication. It provides 作者: Ceramic 時間: 2025-3-27 11:59
https://doi.org/10.1007/978-94-009-3801-4ossless join decomposition of a universal relation scheme which is additionally acyclic. Our method essentially uses the options of the original method of how to group functional dependencies with the identical left hand side. Furthermore we present a decomposition theorem for acyclic database schem作者: ALIBI 時間: 2025-3-27 14:10 作者: 季雨 時間: 2025-3-27 17:51
S. F. Van Amerongen,J. Van Paradijs Call JM-schema a schema which is both a J-schema and an M-schema. Fagin et al. [1980] and Beeri et al. [1981] introduced the notion of an acyclic J-schema and showed that a J-schema is acyclic if and only if it is a JM-schema. Acyclic Schemas have certain desirable properties and this led to the ge作者: 謙卑 時間: 2025-3-27 22:50 作者: Absenteeism 時間: 2025-3-28 04:32
óscar García Agustín,Malayna Raftopoulosbase design time and are to be applied when updates to the database are issued. A significant feature is that the tests are to be applied before the update is made. The basic method is to assert a constraint for the current state of the database, express the new state in terms of both the old state 作者: 黃油沒有 時間: 2025-3-28 09:18
https://doi.org/10.1007/978-3-030-54867-4ting these values whenever parameters on which they depend are modified. Examples were given that illustrated how this view maintenance strategy could be used to monitor integrity constraints. In this paper, we extend that idea to demonstrate how a DBMS can automatically define its own views that wi作者: 磨坊 時間: 2025-3-28 13:44
óscar García Agustín,Malayna Raftopoulos flexible to express a wide range of database transition constraints, that is, restrictions on what sequences of database states are meaningful. They are useful in the context of a database design methodology where the first level of specification consists of a purely declarative definition of both 作者: Prostatism 時間: 2025-3-28 17:53 作者: charisma 時間: 2025-3-28 22:17
,Exile and Clandestinity (1939–50),roaches. These advantages are: computability of the answer for queries by means of relational algebra in the model theoretic approach and generality of the proof theoretic approach. We claim that although database systems should be supplied with inference rules for automatic reasoning, the core of t作者: bizarre 時間: 2025-3-28 23:58 作者: Cardioversion 時間: 2025-3-29 05:51
https://doi.org/10.1007/978-94-009-7960-4 can also be described by its states (which are different from database states) and by its operations (which are different from database operations). In this paper both databases and views are defined as data abstractions which are algebras. The relationship between a database and a view is modeled 作者: 打算 時間: 2025-3-29 10:37
Catalog of Solar Particle Events 1955–1969onding to attributes, and (b) the positional relational algebra, based on the cross product and relation with an order on the columns, and with any column identified by its position in that order. For the attribute relational algebra, we show that both the equivalence and the finite equivalence (i.e作者: 上漲 時間: 2025-3-29 14:21
https://doi.org/10.1007/978-94-009-3801-4ossless join decomposition of a universal relation scheme which is additionally acyclic. Our method essentially uses the options of the original method of how to group functional dependencies with the identical left hand side. Furthermore we present a decomposition theorem for acyclic database schemes.作者: enmesh 時間: 2025-3-29 18:21 作者: exigent 時間: 2025-3-29 21:25
,Exile and Clandestinity (1939–50), set up a logical model of databases using subimplication and two sets of stable formulas. This model allows the construction of a system for creating, updating and querying databases that is totally transparent to the user.作者: 草率女 時間: 2025-3-30 02:51 作者: lesion 時間: 2025-3-30 07:27
https://doi.org/10.1007/978-1-4615-9385-0Base; Volume; addition; constraint; database; database theory; databases; deduction; form; formal specificati作者: 偏離 時間: 2025-3-30 08:46 作者: 祖?zhèn)髫敭a(chǎn) 時間: 2025-3-30 13:54
