Manual de Umbrello UML Modeller. Manual de Umbrello UML Modeller Documents · Generaliserade linjära modeller , individvariationer och Rasch-modeller · Generaliserade linjära modeller. XMI-based model interchange between the UML modelling tools was performed Version () Umbrello UML Modeller Version
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The template type is specified when a class is initiated i.
They have no logical meaning in the model. Much like multiple inheritance in Object Oriented Programming. An Activity is a single step in a process. Associations can have a role that specifies the purpose of the association and can be uni- or bidirectional indicates if the two objects participating in the relationship can send messages to the maanual, of if only one of them knows about the other.
The three most typical types of relationships between Use Cases are:. The time axis is also vertical, increasing downwards, so that messages are sent from one Object to another in the form of arrows with the operation and parameters name. In Sequence Diagrams objects are represented umbrwllo vertical dashed lines, with the name of the Object on the top.
Activity Diagrams are a special form of State Diagrams, that only or mostly contains Activities. Deployment diagrams show the runtime component instances and their associations. Interfaces are abstract classes which means instances cannot be directly created of them.
Class Diagrams show the different classes that make up a system and how they relate to each other. Datatypes are primitives which are typically built into a programming language. An Aggregation describes how the class that takes the role of the whole, is composed has of other classes, which take the role of the mode,ler. In a diagram they are used to represent parts of a system which contain more than one class, maybe hundereds of classes.
Use Case Diagrams are meant to facilitate the communication with the future users of the system, and with the customer, and are specially helpful to determine the required features the system is to manuap. A check constraint also known as table check constraint is a condition that defines valid data when adding or updating an entry in a table of a relational database. They cannot have relationships to classes but classes can have relationships to them.
For Aggregations, the class acting as the whole always has a multiplicity of one. Different texts on u,l subject use different notations. It can refer to a single or multiple columns of the table.
There are two special types of States: A Class defines the attributes and the methods of a umbrelloo of objects.
In UMLAggregations are represented by an association that shows a rhomb on the side of the whole. Packages represent a namespace in a programming language. Disjoint Specialization specifies that the subclasses of the specialization must be disjoint.
They also show interfaces and objects class instances.
It is intended to help reuse existing data with little or no modification. In Collaboration Diagrams messages sent from one object to another are represented by arrows, showing the message name, parameters, and the sequence of the message. Compositions are associations that represent very strong aggregations. This means, Compositions form whole-part relationships as well, but the relationship is so strong that the parts cannot exist on its own.
In ER DiagramsEntity Attributes are shown with their name in a different compartment of the Entity to which they belong. Use Case Diagrams describe the relationships and dependencies between a group of Use Cases and the Actors participating in the process. Enums are a simple list of values.
Collaboration Diagrams are specially well suited to showing a specific program flow or situation and are one of the best diagram types to quickly demonstrate or explain one process in the program logic.
Use Cases are descriptions of the typical interactions between the users of a system and the system itself. They are special in that there is kmbrello event that can cause an Object to return to its Start state, in the same way as there is no event that can possible take an Object out of its End state once it has reached it.
Operations mnual, just as Attributes, display their visibility:. They can contain operations but no attributes. Sequence Diagrams put special mdeller in the order and the times in which the messages to the objects are sent. When the derived entities are not constrained to be disjoint, their set of entities are said to be in overlapping specialization.
Fundamentals of Database Systems 4th edn. Components can have interfaces i.
In UMLassociations are represented as lines connecting the classes participating in the relationship, and can also show the role and the multiplicity of each of the participants. A derived Entity is said to be a Category when it represents a collection of objects that is a subset of Union of the distinct entity types.
A Foreign Key is a nodeller constraint between two tables. A check constraint is applied to each row in the table. umbrelli
Component Diagrams show the software components either component technologies such as KParts, CORBA components or Java Beans or just sections of the system which are clearly distinguishable and the artifacts they are made out of such as source code files, programming libraries or relational database tables. They depict the various entities concepts in the information system and the existing relationships and constraints between them. In UMLCompositions are umbrelo by a solid rhomb on the side of the whole.
Objects are instances of classes. Visual representation of an Aggregation relationship in UML. State Diagrams view Objects as state machines or finite automates that can be in one of a set of finite states and that can change its state via one of a finite set of stimuli.