Found inside – Page 265That notion would require the projections of R onA and SonB to be, not just “union ... as an argument to an aggregate function reference within an EXTEND, ... Found inside – Page 75Proceedings of the 1st International Workshop on Rules in Database Systems, ... Five system predefined association types (aggregation, generalization, ... Found inside – Page 441We perceive a complex type structure as a 'coarser' approximation as a result of 'aggregation' through typing of attribute values. Found inside – Page 592An Object - Oriented Approach to Multimedia Databases Darrell Woelk * Won Kim ... and augments it with the notions of aggregation and relationships which ... Found insideAggregation depicts the Union Catalogue and theme websites. The focus of activation presents how the indigenous databases can be activated for the public. Found inside – Page 38The difference between perfect privacy suspicion notion and weak syntactic suspicion ... Users of statistical databases can retrieve only aggregate results. Found inside – Page 408The GEFRED (generalized model of fuzzy relational databases) model (Medina, Pons, ... Also, it contains the notion of unknown, undefined, and null values. Found inside – Page 122The notion of polyinstantiation at the representation level (low level data structures) of aggregates must be rejected because of the strong coupling ... Found inside – Page 252Decomposition. Methods: Key. Notions. and. Database. Applications ... its applications to the database field, and covering queries with aggregate operators ... Found inside – Page 361In this context, the notion of inductive database, proposed in [2,12], ... based on the notion of user-defined aggregate in the logic database CD C++. Found inside – Page 78The notion of Process is introduced as a modeling construct for activities. ... The notions of object, composition, aggregation, ... Found inside – Page 211Notions. on. Multidimensional. Aggregate ... The latter refers to databases containing multidimensional aggregate data, often shown as statistical tables, ... Found inside – Page 97EARL makes a distinction between four types of aggregation , combining notions of aggregation and PART - OF from knowledge representation and data modeling . The first deals with the definition of a concept in terms of its internal structure . Found inside – Page 64These ADTs are based on the notion of temporal types and their associated operations. 1.1. Mobility Data Warehouses Conventional databases are used to ... Found inside – Page 436As an example, the notion of inductive database, proposed in [1,10], is an attempt ... in which each iteration consists in the computation of an aggregate. Found inside – Page 255When there are no inputs, the state of the aggregate changes in the following ... The writing of specifications often involves reusing the same notion many ... Found inside – Page 44The aggregate function depends on the target dataset and application, ... In order to catch an insight of difference arrays, we use the notion of histograms ... Found inside – Page 5We now illustrate our notions of θ- groups and of θ-CS, and their interest ... We aggregate this θ- CS to the tuple ({1, 2},12,_ ,_,_,_,12,_,_}) compatible ... Found inside – Page 15In the following sections , we discuss the notions of semantic integrity ... as well as the definition of aggregate functions because aggregate functions ... Found inside – Page 258To quantify the result size, the paper defines the notion of an aggregation factor; and to control the aggregation, the ability to specify fixed ... Found inside – Page 181Entropy captures the notion of uncertainty associated with a random element ... be captured in an aggregate manner by the entropy of the value distribution ... Found inside – Page 451Consequently, stream processing engines extend SQL (or some other aggregation language) with the notion of time windows. In StreamBase, windows can be ... Found inside – Page 1This chapter presents the basic notions regarding multidimensional (aggregate) databases by referring to different definitions given for them in the ... Found inside – Page 975Since an aggregation algorithm only gets to see D ' as its input and is not aware of the “ original ” database D one cannot hope in general to state precise lower and upper ... The above is an intuitive notion of consistency for SUM and COUNT . Found inside – Page 163Range-Consistent Answers of Aggregate Queries under Aggregate Constraints Sergio ... the answers of the query evaluated on every possible repaired database. Found inside – Page 3Therefore, what is consistently true is what is true with respect to every repaired database. The notion of a fact which is consistently true corresponds to ... Found inside – Page 299In particular, DART is based on the notion ... Aggregate constraints defined in [16] is constraints like those defined in the context of balance-sheet data. Found inside – Page 61The relation of rewriting to the information-theoretic notion of ... the problem of computing an aggregate function using a given set of aggregate functions ... Found inside – Page 24A schema of a notion is an ordered set of notional attributes. ... aggregate or composite classes, associative relations (links), and database tables. Found inside – Page 3This security notion fits our Example 1 (PeopleSoft vs. ... applications and showed how aggregate operations on encrypted databases can be performed. Found inside – Page 1382.4 The Cartesian Aggregation Grouping A Cartesian aggregation grouping ([16]) is ... The notion of a domain for a Cartesian grouping is defined as follows. Found inside – Page 89Proceedings of the IFIP WG2.6 Database Semantics Conference on ... (i) The notion of an entity used in EER model and the notion of an object used in ... Found inside – Page 134EXPRESS-G provides supports for the notions of entity, type, relationship, ... EER and EXPRESS-G. The notions category and aggregation are only supported by ... Found inside – Page 151On the other hand, while the aggregate structure is a stronger attempt at capturing the notion of “aggregate object,” it does not capture the notion of ... Found inside – Page 54As a result, notions that abstract from the attacker's side information, ... an individual's data while publishing aggregate information about the database. Found inside – Page 653.2.3) LINK NOTION (FIG 5) The model allows one to design the information system according to a principal notion : AGGREGATION. Found inside – Page 221Whereas entity-based notations emphasize Structural aggregation, abstraction and inheritance, most object-oriented notations being around currently ... Found inside – Page 383We first propose a declarative notion of uniform aggregate function that refers to a family of scalar functions uniformly constructed over a vocabulary of ... Found inside – Page 44To formalize the notion of consistent information obtained from a (possibly inconsistent) database in response to a user query, we propose the notion of a ... Found inside – Page 23new columns are added to rows during regular database access, ... What they all share is the notion of an aggregate indexed by a key that you can use for ... Found inside – Page 133NODe 2002 Web and Database-Related Workshops, Erfurt, Germany, October 7-10, ... Abstraction Generalization/Refinement Aggregation Coordination Mechanism ... Found inside – Page 383The notion of computable queries has interested database researchers since the ... Exercise 6.2 Aggregate functions provide an important and useful ... Found inside – Page 41P Therefore, for aggregation queries we have to weaken a bit the notion of consistent query answer to allow answers that are not single values, ... Found inside – Page 148As such, we introduce the notion of fairness in the recommendation process. ... (c) We introduce a new aggregation method that encapsulates the notion of ... Found inside – Page 3890..1 (a) (b) 1 Figure 9.47 Alternative UML notations for aggregation. namely ... seems little justification for introducing the notion of aggregation at all ... Found inside – Page 115In addition, the notion of inheritance addressed there includes only aggregation inheritance leaving out the powerful mechanism of polymorphism. Found inside – Page 598In the representation-based querying framework, the comparison is based on the notion of synonymy of representations, contrary to what is done, for instance ... Found inside – Page 321Klug [16] provided a first theoretical basis in this respect, by extending the relational algebra and calculus with aggregate functions, that is, ... Found inside – Page 80By exploiting the iterate predicate, the abserr aggregate for com- puting the ... aspects discussed in section 1 is the notion of inductive database [1,17], ... Found inside – Page 285A framework for computing consistent answers to boolean aggregate queries in ... Most of the work dealing with this problem is based on the notions of ... Of balance-sheet data Page 134EXPRESS-G provides supports for the public consistency for SUM and COUNT of histograms... found –! To catch an insight of difference arrays, we use the notion of histograms... found –... Construct for activities the notions of entity, type, relationship,... EER EXPRESS-G! Indigenous databases can be... found inside – Page 134EXPRESS-G provides supports for the notions of object composition! 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