Logical Data Modeling - Value (Operand)

Data System Architecture


A value may be obtained by:

Values may represents the structural characteristic of:

A value is stored in a field (cell).


Values are classified into different value sets called attribute (feet, color, first-name, and last-name) and inherit the attribute properties


The properties of the value are defined on the attribute level such as:

Discover More
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 Type | Data Structure)

A type is the classification of value according to: how they are represented (the structure) the properties that they have (the operations) A data structure is a complex data type that can not be...
Card Puncher Data Processing
(Data) Type - (Datatype|Type of data)

Variables, parameters, and function may be typed (static typing) and return values that are typed (as do a database column). The type of a variable or expression defines the characteristics of the values...
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...
Thomas Bayes
Data Mining - (Missing Value|Not Available) NA

Is theresignificance in the fact that a value is missing? “Missing” means what … Unknown Unrecorded Irrelevant Most learning algorithms deal with missing values but they may make different...
Model Funny
Function - (Aggregate | Aggregation)

Aggregate functions return a single value calculated or selected from values that are in a aggregation relationship (ie a set) This values are also known as summary because they try to summarize...
HTML - Option

option is an element used to define a value. option can be contained in: a select (list) an optgroup (to group option) or a datalist element (data array) For example, this select creates a...
Card Puncher Data Processing
Language - Equality

The Equality operators model the Equivalence relation: equality is parallel to (for affine spaces) is in bijection with isomorphy The Equality operators are a subset of the comparison operator....
Card Puncher Data Processing
Language - Value

in code A variable hold a value (Primitive, Object, ...) An expression produces a value In a dynamic language, only the value has a type (not the variable) Every value has a type. Variable are...
Data System Architecture
Logical Data Modeling - Attribute

An attribute is a property or characteristic of a primary element (entity, relationship) one-to-one colorentity... The values for each attribute are defined in terms of properties. An attribute is...

Share this page:
Follow us:
Task Runner