Integrated Temporal Conceptual Model

Temporal Model

Month is an entity type.
Reference Scheme: Month
has Tick.
Reference Mode: Tick.


Fact Types:

Month
has Tick.

Year
involves Month
involves Day.


Examples: 1, 12, 9

Day is an entity type.
Reference Scheme: Day
has Tick.
Reference Mode: Tick.


Fact Types:

Day
has Tick.

Year
involves Month
involves Day.


Examples: 1, 31, 69

Year
involves Month
involves Day.
The possible values of Monthin Year
involves Month
involves Day are at least 1 to at most 12.
The possible values of Dayin
Year
involves Month
involves Day are at least 1 to at most 31.
It is possible that more than one Year
involves the same Month
involves the same Day
and that the same Year
involves more than one Month
involves the same Day
and that the same Year
involves the same Month
involves more than one Day.
In each population of Year
involves Month
involves Day, each Year,
Month,
Daycombination occurs at
most once.
This association with Year,
Month,
Dayprovides the preferred identification
scheme for Calendar.
Each Year
involves some Month
involves some Day.
For each Month,
some Year
involves that Month
involves some Day.
For each Day,
some Year
involves some Month
involves that Day.


Examples:

Year 0 involves Month1
involves Day 1.

Year 2000 involves Month1
involves Day 1.

Year 9999 involves Month12
involves Day 31.

Year 1969 involves Month9
involves Day 69.

Hour is an entity type.
Reference Scheme: Hour
has Tick.
Reference Mode: Tick.


Fact Types:

Hour
has Tick.

Hour
involves Minute
involves Second.


Examples: 0, 23, 5

Minute is an entity type.
Reference Scheme: Minute
has Tick.
Reference Mode: Tick.


Fact Types:

Minute
has Tick.

Hour
involves Minute
involves Second.


Examples: 0, 59, 47

Hour
involves Minute
involves Second.
The possible values of Hourin Hour
involves Minute
involves Second are at least 0 to at most 23.
The possible values of Minutein
Hour
involves Minute
involves Second are at least 0 to at most 59.
The possible values of Secondin
Hour
involves Minute
involves Second are at least 0 to at most 59.
It is possible that more than one Hour
involves the same Minute
involves the same Second
and that the same Hour
involves more than one Minute
involves the same Second
and that the same Hour
involves the same Minute
involves more than one Second.
In each population of Hour
involves Minute
involves Second, each Hour,
Minute,
Secondcombination occurs at
most once.
This association with Hour,
Minute,
Secondprovides the preferred identification
scheme for Clock.
Each Hour
involves some Minute
involves some Second.
For each Minute,
some Hour
involves that Minute
involves some Second.
For each Second,
some Hour
involves some Minute
involves that Second.


Examples:

Hour 0 involves Minute0
involves Second 0.

Hour 23 involves Minute59
involves Second 59.

Hour 5 involves Minute47
involves Second 24.

Second is an entity type.
Reference Scheme: Second
has Tick.
Reference Mode: Tick.


Fact Types:

Second
has Tick.

Hour
involves Minute
involves Second.


Examples: 0, 59, 24

Year
has Tick.
Each Year
has exactly one Tick.
Each Tick
is of at most one Year.
This association with Tickprovides the preferred identification scheme for Year.

Tick is a value type.
Portable data type: Numeric: Unsigned Big Integer.


Fact Types:

Year
has Tick.

Month
has Tick.

Hour
has Tick.

Minute
has Tick.

Second
has Tick.

Day
has Tick.


Examples: 0, 1, 2000, 9999, 12, 31, 23, 59, 5, 47, 24, 1969, 9, 69

Month
has Tick.
Each Month
has exactly one Tick.
Each Tick
is of at most one Month.
This association with Tickprovides the preferred identification scheme for Month.

Day
has Tick.
Each Day
has exactly one Tick.
Each Tick
is of at most one Day.
This association with Tickprovides the preferred identification scheme for Day.

Hour
has Tick.
Each Hour
has exactly one Tick.
Each Tick
is of at most one Hour.
This association with Tickprovides the preferred identification scheme for Hour.

Minute
has Tick.
Each Minute
has exactly one Tick.
Each Tick
is of at most one Minute.
This association with Tickprovides the preferred identification scheme for Minute.

Second
has Tick.
Each Second
has exactly one Tick.
Each Tick
is of at most one Second.
This association with Tickprovides the preferred identification scheme for Second.

Event is an entity type.
Reference Scheme: Event
has Event_Id.
Reference Mode: .Id.


Fact Types:

Event
record on Calendar.

Event
occour at Clock.

Event
has Event_Id.

Event
involves Tense.


Examples: 0, 1, 2, 3

Event
record on Calendar.
Each Event
record on exactly one Calendar.
It is possible that more than one Event
record on the same Calendar.


Examples:

Event 0
record on Calendar (0, 1, 1).

Event 1 record on Calendar(2000, 1, 1).

Event 2 record on Calendar(9999, 12, 31).

Event 3 record on Calendar(1969, 9, 69).

Event
occour at Clock.
Each Event
occour at exactly one Clock.
It is possible that more than one Event
occour at the same Clock.


Examples:

Event 0
occour at Clock (0, 0, 0).

Event 1 occour at Clock(0, 0, 0).

Event 2 occour at Clock(23, 59, 59).

Event 3 occour at Clock(5, 47, 24).

Notes: Integrated Temporal Conceptual Model.

Tense is a value type.
Portable data type: Text: Fixed Length.


Fact Types:

Event
involves Tense.
The possible values of Tenseare
'past', 'present',
'future'.


Examples: 'past', 'present', 'future'

Event
involves Tense.
Each Event
involves exactly one Tense.
It is possible that more than one Event
involves the same Tense.


Examples:

Event 0
involves Tense 'past'.

Event 1 involves Tense'present'.

Event 2 involves Tense'future'.

Event 3 involves Tense'past'.

Year is an entity type.
Reference Scheme: Year
has Tick.
Reference Mode: Tick.


Fact Types:

Year
has Tick.

Year
involves Month
involves Day.


Examples: 0, 2000, 9999, 1969