POSC Specifications
Related Specifications

Related Specifications

Epicentre Methodology

This version of Epicentre conforms to the POSC Epicentre Modeling Methodology Version 3.0 specification. Entity and attribute names have been constrained to 30 characters. Abbreviations from the Abbreviations Table were used to shorten names where necessary to achieve this length. Notable changes in the methodology are that LOCATION now supports degree-minute-second values and TIMESTAMP now supports imprecise points in time.

Subsetting and Extension

A variation of this version of Epicentre may be created according to the POSC Subsetting and Extension Version 2.3 specification.

Relational Implementation Methodology

The relational implementation that has been defined for this version of Epicentre conforms to the POSC Relational Implementation Methodology Version 2.3 specification with one exception. The E_and_p_data attributes instance_create_date and last_updated were projected as precise timestamps since it is expected that they will be computer generated. Table and column names were constrained to a maximum of 30 characters. In addition to the logical model abbreviations, the following abbreviations were used to constrain the length of column names in the relational projection.

Word or Phrase Abbreviation
frequency freq
definition defn

This projection differs from the V2.2 projection in the following areas:

The POSC developed Incremental Express syntax was used to specify projection parameters to the POSC Incremental Express Tool. The following projection changes were applied as part of the projection. Note that they were not listed as a change in the entity documentation because they had no affect on the Logical Model.

Abbreviations

In order to conform to the length constraints on entity and attribute names, some portions of names have been abbreviated. The abbreviations were generally applied on an as needed basis but if applied then the word or phrase was consistently abbreviated. All abbreviations were chosen from the following list.
Abbreviations Table
Word or Phrase Abbreviation
angle ang
associate assoc
association assn
average avg
business_associate bus_assoc
calorific cal
characterization char
classification clsn
coefficient coef
component cmpnt
composition comp
compositional comp
compressibility cmprs
concentration conc
congressional congress
connection conn
constant_volume_depletion cvd
construction_and_ownership co_and_o
coordinate coord
correlation corel
description desc
difference diff
dimensionless dimen
displacement displ
distribution dist
document_specification doc_spec
eastern east
effective eff
elevation elev
equilibrium_ratio kval
examination exam
exploration_and_production e_and_p
exponential expon
facility fcl
factor fact
feature ftr
federal fed
flow_rate q
fluid fl
fluorescence fluor
formation form
formation_volume_factor fvf
fraction frac
fulfillment fulfil
gas_oil_ratio gor
geochronologic geochron
geographic_information_system gis
geometry geom
harmonic harm
height ht
horizontal hor
hydrocarbon hc
hyperbolic hyper
inclusion incl
inflection infl
information info
intensity inten
interaction interact
International_Standards_Organization si
involvement involv
lease_automated_custody_transfer lact
location loc
Matthews_Brons_and_Hazebroek mbh
maximum max
measurement meas
modified mod
National_Topographic_Service nts
nominal nom
obligation oblig
one_dimensional 1d
orientation orient
original orig
parameter param
penetration penet
perforation perf
permeability perm
potential pot
pressure pres
product_flow_network_unit pfnu
property pty
radiation radn
radius rad
reference ref
regulation reg
relative rel
relative_permeability rel_perm
reservoir rsvr
rotation rotat
segment seg
shrinkage shrnk
simulation sim
spatial spat
specific sp
specification spec
station stn
status stat
survey srvy
system sys
temperature_maximum t_max
thickness thick
three_dimensional 3d
transformation trfrm
two_dimensional 2d
unit_of_measure uom
United_States_of_America usa
US Bureau of Mines usbm
unique_identifier uid
utilization util
vertical vert
volume vol
volumetric vol
water_oil_ratio wor
with_respect_to wrt
zone zn


© Copyright 1994- POSC. All rights reserved.