Logical Data Modeling - Aggregate Data

Data System Architecture


Aggregate data are data that are in a aggregation relation (ie elements that are in a collection)

An aggregate function is a function that is applied to aggregate data (ie A sum is applied to a collection of number)

You aggregate over additive numeric data grouped by class data

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Data System Architecture
(Collection|Container) Data Type (Set, Bag, Sequence)

A collection is a abstract data type for grouping together multiple values. It's therefore sometime known as a container and creates a aggregation relationship A collection is: an object that groups...
Data System Architecture
(Data|State|Operand) Management and Processing

This section is and state management as opposed to code. System that manages data are called database. In a computer, there is two kinds of byte instruction byte and data byte. This section is...
Data System Architecture
Data - Cache

In computer science, a data cache is a component that aims to: improve performance reduce load on the server. The cache will: store transparently a request response and use it to for later...
Java Collection Type
Java - (Collection|container) Framework (Types)

A collection (known also as a container) is an object that groups multiple objects (elements) into a single unit. Collections are used to store, retrieve, manipulate, and communicate aggregate data. ...
Data System Architecture
Logical Data Modeling - Additive Attribute

An additive attribute is an attribute with a numeric value that can be logically added (You can therefore aggregate over) In dimensional data, the most command additive attribute are called measure...
Data System Architecture
Logical Data Modeling - Classifier (Label, Class, Tag) - Descriptif Attribute

A label is an attribute that describes its entity or relationship with nominal data. A label is also known as: a tag a class or just a nominal attribute a classifier a group a category Classifiers...
Aggregate Operator
OWB - Aggregator operator

The Aggregator operator calculates data aggregations on the input data. It provides an output row set that contains the aggregated data. Aggregator operator is the “group by” clause in Sql. You can...
Data System Architecture
Relational Data Modeling - Aggregate Table (Summary Table)

An Aggregate table is a persistence unit of aggregate data. Aggregate tables are also known as summary table (from summary) materialized view A aggregate is a table that contains the result of a query...

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