Term
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Definition
| A class that cannot be instantiated (no objects can be created), existing only to allow subclasses to inherit its attributes, methods, and associations. |
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Term
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Definition
| Whole-part relationship between an object and its parts. |
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Term
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Definition
| A data entity that represents a many-to-many relationship between two other data entites. |
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Term
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Definition
| One piece of specific information about a thing. |
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Term
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Definition
| Rlationships between two different types of things, such as a customer and an order. |
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Term
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Definition
| The number of associations that occur among specific things, such as a customer places many orders, and an employee works in one department. |
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Term
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Definition
| The type or classification to which all simlar objects belong. |
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Term
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Definition
| Whole-part relationship in which the parts cannot be dissociated from the object. |
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Term
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Definition
| An attribute that contains a collection of related attributes. |
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Term
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Definition
| A class that can be instantiated (objects can be created). |
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Term
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Definition
| The things the system needs to store information about in the traditional approach to information systems. |
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Term
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Definition
| Narrative memos, reports, or lists that describe some aspect of a system. |
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Term
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Definition
| An external agent or actor that receives data from the system. |
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Term
Elementary Business Process
(EBP) |
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Definition
| A task that is performed by one person in one place in response to a business event that adds measurable business value and that leaves the system and its data in a consistent state. |
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Term
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Definition
| Covering or protecting each object so that it contains values for attributes and methods for operating on those attributes, making the object a self-contained (and protected) unit. |
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Term
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Definition
| An occurrence at a specific time and place that can be described and is worth remembering. |
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Term
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Definition
| An analysis technique that focuses on identifying the events to which a system must respond and then determining how the system must respond. |
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Term
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Definition
| A table that lists events in rows and key pieces of information about each event in columns |
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Term
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Definition
| An event that occurs outside the system, usually initiated by an external agent or actor. |
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Term
| Generalization/specialization hierarchies |
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Definition
| Hierarchies that structure or rank classes from the more general superclass to the more specialized subclasses; sometimes called inheritance hierarchies. |
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Term
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Definition
| Diagrams and schematic representations of some aspect of a system. |
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Term
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Definition
| An attribute that uniquely identifies a thing. |
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Term
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Definition
| A concept that allows subclasses to share characteristics of their superclasses. |
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Term
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Definition
| A series of formulas that describe technical aspects of a system. |
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Term
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Definition
| The behaviors all objects of the class are capable of doing. |
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Term
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Definition
| A synonym for cardinality (used with the object-oriented approach.) |
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Term
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Definition
| A relationship among N (any number of) different types of things. |
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Term
| Perfect Technology Assumption |
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Definition
| The assumption that events should be included during analysis only if the system would be required to respond under perfect conditions. |
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Term
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Definition
| A naturally occurring association among specific things, such as an order is placed by a customer, and an employee works in a department. |
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Term
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Definition
| An output, produced by the system, that goes to a destination. |
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Term
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Definition
| An external agent or actor that supplies data to the system. |
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Term
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Definition
| An event that occurs when something happens inside the system that triggers the need for processing. |
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Term
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Definition
| Checks or safety procedures put in place to protect the integrity of the system. |
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Term
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Definition
| An event that occurs as a result of reaching a point in time. |
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Term
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Definition
| A relationship among three different types of things. |
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Term
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Definition
| A signal that tells the system that an event has occurred, either the arrival of data needing processing or a point in time. |
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Term
| Unary (Recursive) Relationship |
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Definition
| A relationship between two things of the same type, such as one person being married to another person. |
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Term
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Definition
| An activity the system performs. |
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Term
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Definition
| Hierarchies that structure classes according to their associated components. |
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