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Section 3: TRM Update Functions

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Which Update-Code to Use?

The TRM system uses the Update-Code to determine the transaction’s Update Functions:

  • Add function allows the system to add data attributes to TRM which do not exist in TRM
  • Update function allows the system to change data attribute values currently TRM to new values
  • Delete function allows the system to remove data attribute values currently TRM.
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Functions per Data Classification

Each data class, described in Chapter 2, Section 2, uses different update functions:

Anchor: #i1012321Data Classes

Class

Description

Point Data

Uses any of the update functions: Add, Update, or Delete

EXAMPLE: Add, update, or delete an on-system intersection

Continuous Length Data

Uses the Update function only. (Compare the Update function for continuous length data to painting a wall. Painting the wall from one point to another completely covers any other pre-existing colors or adds color for the first time to a bare wall.)

EXAMPLE: In Figure 3‑16 and Figure 3‑17 below, a route segment contains no Surface Type value. Add a value by “painting” the segment with values using the Update function

Non-Continuous Length Data

Uses any of the three update functions: Add, Update, or Delete

EXAMPLE: In Figure 3-18 and Figure 3-19 below, other values already exist. “Paint” over unwanted values with new values using the Update function

Easy-to-Remember Point Data and Length Data Difference

  • POINT data and NON-continuous length data add to, update, or delete data at a single location point on a route
  • Continuous length data updates a route between two points on a route


Route with no Surface Type value. (click in image to see full-size image) Anchor: #i1001321grtop

Figure 3-17. Route with no Surface Type value.

Route with Surface Type 55 input between
locations X and Y. (click in image to see full-size image) Anchor: #i1001325grtop

Figure 3-18. Route with Surface Type 55 input between locations X and Y.

Surface Types 51 and 62 exist on route;
input Surface Type 55 to change a segment within Types 51 and 62. (click in image to see full-size image) Anchor: #i1001329grtop

Figure 3-19. Surface Types 51 and 62 exist on route; input Surface Type 55 to change a segment within Types 51 and 62.

Route with Surface Type 55 input between
locations X and Y. (click in image to see full-size image) Anchor: #i1001333grtop

Figure 3-20. Route with Surface Type 55 input between locations X and Y.

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TRM Update-Code

The Update-Code is a three-character field that dictates screen movement and system processing:

  • First Character identifies the Input Data:
  • Anchor: #i1012340Update-Code First Character

    Value

    Description

    1

    Length Data (TPP and District)

    2

    Point Data (TPP and District)

    3

    Highway Network Data (TPP only)

    4

    HPMS Data (TPP only)

    5

    Marker Coordinate (TPP only)



  • Second Character identifies the Update Function:
  • Anchor: #i1012362Update-Code Second Character

    Value

    Description

    1

    Delete

    2

    Add

    3

    Update



  • Third Character identifies the Object of the Update Function:
  • Anchor: #i1012378Update-Code Third Character

    Value

    Description

    A

    Routes

    B

    Contiguous route sections

    C

    Non-contiguous route sections

    D

    Fillers for roadway gaps

    E

    Marker Coordinates

    F

    Off-System transfers

    G

    Markers

    H

    Attributes

    I

    Linking route segments

    J

    Roadbeds



Combine these characters to create the Update-Code. In Figure 3‑21, Update-Code 23H tells the system to Update Point Attributes:

TPP Database Maintenance Menu selection. (click in image to see full-size image) Anchor: #i1001829grtop

Figure 3-21. TPP Database Maintenance Menu selection.

Input Update-Code in the Type Choice field and press <E>. The appropriate submenu or data screen appears:

The Update Selection Menu appears after
entering Update-Code 23H. (click in image to see full-size image) Anchor: #i1001831grtop

Figure 3-22. The Update Selection Menu appears after entering Update-Code 23H.

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