Figure 1 illustrates how UML (unified modeling language) provides for modeling specified-range relationships in a class diagram (Dennis, Wixom, & Tegarden, 2005). ERD, as described by Chen (1976), does not, although there are extensions to the ERD model that do (Webre, 1981). The SQL-...
However, FODA feature diagram notation is, in many cases, not expressive enough for capturing all user-configurable properties of real-world applications. In particular, two major extensions to feature models have been proposed, usually summarized under the termextended feature models(EFM), namely (1...
Theone-to-one (1:1) relationshipdefines the fact that one row in a database table relates to exactly one row in a second table. In an ER diagram, 1:1 means that one occurrence of an entity is related to one event in a second entity. Examples of the 1:1 relationship include student...
A 'Cardinality Restriction' in Computer Science refers to defining classes based on the number of distinct values a property takes, allowing constraints on the number of individuals related to a member of the restriction class. AI generated definition based on: Semantic Web for the Working Ontologis...
FIG. 1 is a block diagram illustrating a general overview of embodiments of the exact cardinality query optimization system and method disclosed herein. It should be noted that the implementation shown in FIG. 1 is only one of many implementations that are possible. Referring to FIG. 1, an ex...
A system, computer-implemented method, and computer-program product embodiments for determining a cardinality estimate for a query. A cardinality estimator identifies a predicate in
Our purpose is then to give a tool to detect possible conflicts among constraints before creating the physical database corresponding to an UML class diagram. We will treat the multiplicity constraints using a mathematical programming technique. The analysis and the detection of invalid sub-schemas ...
In order to estimate the p-adic sizes of common zeros of partial derivative polynomials associated with certain class of polynomial of degree eleven, the Newton polyhedron technique will be used. Then, the indicator diagram is constructed and analyzed. Hence, the estimation of the cardinality of ...
in the data set; determine a width of each non-target value marker based on a frequency of occurrence of the non-target value represented by the non-target value marker in the data set; and cause generation, by circuitry, of the visualization, wherein the visualization includes the target ...
A server applied to a database management system and a method are provided. By calculating a data skew for a column based on an entropy for the column in a database, storing the dat