The Existence Of A(n) _____ Entity Indicates That Its Minimum...

The Existence Of A(N) _____ Entity Indicates That Its Minimum Cardinality Is Zero. A. strong B.weak C. ternary D. optional.T has degree 4, zeros i and 1+i, and constant term 12. Since i is a zero, its conjugate -i is also a zero. The other two zeroes are 1 + i and 1 - i. Thus.entity that cannot logically exist without existence of another entity. ID-dependent entity. attributes that name or identify entity instances; consists of when minimum cardinality = 0, entity is when min cardinality is 1/another number (not 0) entity required to have relationship w/another specified entity...Existence Dependencies if the existence of entity X depends on the existence of entity Y, then X The discriminator of a weak entity set is a set of attributes that allows this distinction to be made. A range of numbers indicating optionality of relationship. E.g (0,1) indicates minimum zero (optional)...A. Minimum cardinality. Which type of entity cannot exist in the database unless another type of entity also exists in the database, but does not require that the identifier of that other entity be included as part of its own identifier?

Find a polynomial with integer coefficients that... | Yahoo Answers

Relationships between entities always operate in one direction. False 33. An entity is said to be _____-dependent if it can exist in the database only when it is associated with another 36. The existence of a mandatory relationship indicates that the minimum cardinality is 0 or 1 for the mandatory entity.Every Set is an Element of its Power Set | Set Theory. In this video we go over just that, defining cardinality with examples both easy and hard.Any object, for example, entities, attributes of an entity, relationship sets, and attributes of Every ellipse represents one attribute and is directly connected to its entity (rectangle). Cardinality is the number of instance of an entity from a relation that can be associated with the relation.Entity-relationship diagrams are graphical representations that depict real-world data processes in terms of the relationships The entity may take the form of a table or object. Without the proper cardinality relationships, your order management system would be prone with errors and it would be...

Free Computers Flashcards about DatabaseConceptsCh4

Minimum cardinality: minimum number of entity instances that must participate in a relationship. zero [0] optional one A weak entity is an entity whose existence depends upon another entity. Weak entities must be indicated by an. accompanying text box in Erwin - There is no specific notation for a.Entity-relationship modeling is the process of visually representing entities, attributes, and relationships to produce an Describe participation, namely, the possible combinations of the entities part of a relationship. If an entity participates with a minimum cardinality of 0, it means that its...Relationships exist between two query subjects or between tables within a query subject. The cardinality of a relationship is the number of related rows When you interpret cardinality, you must consider the notation that displays at both ends of the relationship. Possible end labels are shown in...Cardinality is set to "1..1" in contrast to the actual data cardinality. In the current example, cardinality had been set wrongly from the beginning. In contrast in the following examples situations will be described that can lead to wrong cardinality settings even though the settings are correct at...• Super type (optional) is the generalized fundamental entity that shares its attributes and associations with this fundamental entity. A fundamental unit can also be right associated to another fundamental entity as a child or a parent when the cardinality is at most a one to many.

In the entity-relationship model, a desk line compares to an element incidence. The presence of a compulsory relationship displays that the base cardinality is Zero or 1 for the required element. the presence of a[n] not obligatory entity displays that its base cardinality is 0.An entity-relationship type (or ER model) portrays interrelated issues of pleasure for a selected zone of knowledge. A crucial ER type is made out of substance sorts (which painting the issues of pastime) and decides associations that can exist between components (occasions of those element varieties).