Tracking and viewing model changes based on time

A system for managing changes to data, comprising:

• a network computer, comprising:
• a transceiver that communicates over the network;
• a memory that stores at least instructions;
• and
• one or more processor devices that execute instructions that perform actions, including:
• instantiating a modeling engine to perform actions, including:
• providing a data model that is based on one or more objects, wherein each object is comprised of one or more versions of one or more properties, and wherein the one or more versions of each property are stored in a same data structure in a same data store;
• associating each version of the one or more properties with separate validity ranges over time during which each version is valid, wherein each separate validity range for each version of a same property are disjoint from each other validity range of the same property;
• and
• employing the separate validity ranges over time to store an amount of reference data associated with each version of the same property, which optimizes a minimum amount of reference data stored in the data store to capture each version of the data model without having to also store full copies of reference data associated with each version of the data model or each version of the one or more objects;
• and
• instantiating a report engine to perform further actions, including:
• providing a report for visualizing one or more portions of the data model at a point-in-time;
• providing one or more report values based on each version of the one or more properties that have a validity range that includes the point in time;
• and
• displaying the report on a hardware display, wherein the report provides one or more visualizations based on the one or more report values;
• and
• a client computer, comprising:
• a client computer transceiver that communicates over the network;
• a client computer memory that stores at least instructions;
• and
• one or more processor devices that execute instructions that perform actions, including:
• displaying one or more portions of the report.

A processor readable non-transitory storage media that includes instructions for managing changes to data, wherein execution of the instructions by one or more hardware processors performs actions, comprising:

• instantiating a modeling engine to perform actions, including:
• providing a data model that is based on one or more objects, wherein each object is comprised of one or more versions of one or more properties, and wherein the one or more versions of each property are stored in a same data structure in a same data store;
• associating each version of the one or more properties with separate validity ranges over time during which each version is valid, wherein each separate validity range for each version of a same property are disjoint from each other validity range of the same property;
• and
• employing the separate validity ranges over time to store an amount of reference data associated with each version of the same property, which optimizes a minimum amount of reference data stored in the data store to capture each version of the data model without having to also store full copies of reference data associated with each version of the data model or each version of the one or more objects;
• and
• instantiating a report engine to perform further actions, including:
• providing a report for visualizing one or more portions of the data model at a point-in-time;
• providing one or more report values based on each version of the one or more properties that have a validity range that includes the point in time;
• and
• displaying the report on a hardware display, wherein the report provides one or more visualizations based on the one or more report values.

A network computer for generating reports for managing changes to data, comprising:

• a transceiver that communicates over the network;
• a memory that stores at least instructions;
• and
• one or more processor devices that execute instructions that perform actions, including:
• instantiating a modeling engine to perform actions, including:
• providing a data model that is based on one or more objects, wherein each object is comprised of one or more versions of one or more properties, and wherein the one or more versions of each property are stored in a same data structure in a same data store;
• associating each version of the one or more properties with separate validity ranges over time during which each version is valid, wherein each separate validity range for each version of a same property are disjoint from each other validity range of the same property;
• and
• employing the separate validity ranges over time to store an amount of reference data associated with each version of the same property, which optimizes a minimum amount of reference data stored in the data store to capture each version of the data model without having to also store full copies of reference data associated with each version of the data model or each version of the one or more objects;
• and
• instantiating a report engine to perform further actions, including:
• providing a report for visualizing one or more portions of the data model at a point-in-time;
• providing one or more report values based on each version of the one or more properties that have a validity range that includes the point in time;
• and
• displaying the report on a hardware display, wherein the report provides one or more visualizations based on the one or more report values.