POSC Specifications
Changes

Change Overview

Synopsis

This represents a reorganized model that minimizes multiple inheritance, eliminates all subtypes of Activity, shortens names to a maximum of 30 characters and otherwise simplifies the model. Additional changes have been derived from extensions developed for the FieldBank project (adds Potential Field data), from Statoil's SLEGGE project (to develop and implement a POSC compliant data store and access) and from EPSG recommendations.

Mechanics

The changes for Version 3.0 were made using the POSC developed Incremental Express syntax. The changes were applied using the POSC developed Incremental Express Tool that is available for anyone to use.

The changes were applied by the tool in sequential order as indicated by the change number. A subsequent change would be applied against the results of the previous change. For example, change C001 was the first change that was applied and C002 was applied against the model that resulted from applying C001. In some cases, modifications made in one change were backed out or modified in subsequent changes. This is especially true for changes which cross snapshot boundaries since each snapshot was frozen. Also, the Incremental Express Toolset was evolving over time with more checks being added. This resulted in cleanup changes being added as a modification to previous snapshots.

Changes developed by POSC have a name that is prefixed by ERP (Epicentre Restructure Project). Changes that were developed by Statoil's SLEGGE project have a name that is prefixed by ESM (Epicentre SLEGGE Model). Note that changes submitted by SLEGGE may have had minor changes applied before inclusion. Changes that were developed for the alpha version do not have a number after the prefix (e.g., "ERP_"). Changes that were developed for the beta version have the number 2 after the prefix (e.g., "ESM2_"). Changes that were developed for the gamma version have the number 3 after the prefix (e.g., "ERP3_"). Projection changes (i.e., they do not affect the logical model) have a prefix of "_ERP4_" and will not be shown as changes in the documentation. Changes that were developed for the final version have the number 5 after the prefix.

Global POSC Changes

The following represents global POSC initiated changes that were included in this version:

Major POSC Changes

The following represents some of the major POSC initiated changes that were included in this version:

Major SLEGGE Changes

The following represents some of the major changes that were initiated by Statoil's SLEGGE project:

Minor SLEGGE Changes

The following represents the minor changes that were initiated by Statoil's SLEGGE project:


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