Your first model

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Work in progress...

In this section you'll be introduced to the main modeling constructs and create a simple model.

There are multiple ways to enter data in the model:

  1. Enter the data in the form.
    In an entity list you can click on object to edit it, or use the 'add' option to create a new object.
    The change form also allows to delete an object (and all other objects that reference it), and to review the history of edits.
  2. Upload data from a CSV-formatted file.
    The 'export' option exports the report data into a CSV-format.
    The 'import' option reads in a file in this format.
    It is possible to export data in a spreadsheet, make all changes there, save the results as a CSV-file and finally-reimport the data.
  3. Data can also be directed loaded into the database.
    For integration with other systems, direct access to the database is also possible. This bypasses the user interface altogether.
  4. A special case are fixtures.
    A fixture is pre-defined, frozen dataset. This is useful to load test or training datasets in the database.
  • Location
    A location is a (physical or logical) place where resources and buffers are located.
  • Item
    An item represents an end product, intermediate product or a raw material.
  • Operation
    An operation represents an activity: it consumes and produces material, takes a certain time and also requires capacity.\\ The material consumption is modelled as a flow: see below.
    The capacity consumption is modelled as a load: see below.
  • Buffer
    A buffer is a storage for a item. It represents a place where inventory of an item is kept.
    Operations consume material from or produce into buffers using flows: see below
  • Flow
    Flows are used to model the consumption and production of material.
    They create a link/assiocation between an operation and a buffer.
  • Resource Resources represent capacity. They represent a machine, a worker or a group of workers, or some logical limits.\\ Operations consume capacity using loads: see below.
  • Load
    Loads are used to model the capacity consumption of an operation.
  • Demand
    Defines independent demands for items. These can be actual customer orders, or forecasted demands.
  • Verify the supply path
  • Shortcut